KMap
Nathan conducts observations using the Hubble Space Telescope and other NASA missions, plus numerous ground-based optical/infrared telescopes. Although primarily an observer, he incorporates theoretical tools in his work, and has a broad interest in Galactic astronomy including stellar evolution, mass loss, circumstellar material, shock physics, HII regions, disks, jets, planetary nebulae, dust formation, and nebular spectroscopy. Nathan earned undergraduate degrees in music and astronomy, plus a master's degree and a Ph.D. in Astrophysics.

VOSviewer

Courses
  • FA
    Fundamentals of Astronomy

  • SFSEOP
    Seminiar with a Focus on Stellar Evolution from an Observational Perspective

  • TA
    Theoretical Astrophysics

  • TPU
    The Physical Universe

  • ASP
    Astrophysics of Stars and Planets

  • S
    Stars

  • SFSEOP
    Seminar with a Focus on Stellar Evolution from an Observational Perspective

Grants
  • Funding agency logo
    Disentangling the Origin of Dust in Type lln Supernovae

    Principal Investigator (PI)

    2023

    $18.9K
    Active
  • Funding agency logo
    The Final Word on SN 2009ip: Is it Dead?

    Principal Investigator (PI)

    2022

    $13.7K
    Active
  • Funding agency logo
    Shocks and Expanding Ejecta in Supernova 1987A

    Principal Investigator (PI)

    2022

    $12.4K
    Active
  • Funding agency logo
    Using Supernova Progenitors to Determine the Mass Threshold for Black Hole Formation

    Principal Investigator (PI)

    2022

    $12.1K
    Active
  • Funding agency logo
    From Supernova Progenitors to Ionizing Radiation - HST/COS Spectroscopy of Stripped Helium Stars

    Principal Investigator (PI)

    2022

    $7.8K
    Active
  • Funding agency logo
    The Disappearing LBV in the Low Metallicity Galaxy PHL293B: Collapse to a Black Hole?

    Principal Investigator (PI)

    2021

    $43.4K
    Active
  • Funding agency logo
    UV Spectroscopy of He Stars: The Elusive Stripped-Envelope Supernova Progenitors

    Principal Investigator (PI)

    2020

    $64.4K
    Active
  • Funding agency logo
    Proper Motions and UV Spectroscopy of the MgII Nebula Around Eta Carinae

    Principal Investigator (PI)

    2020

    $41.4K
    Active
  • Funding agency logo
    Flashlights:Many Extremely Magnified Individual Stars as Probes of Dark Matter and Stellar Populations to Redshift z~2

    Principal Investigator (PI)

    2020

    $39.2K
    Active
  • Funding agency logo
    The Identification of Failed Supernovae

    Co-Investigator (COI)

    2019

    $276.6K
    Active
News
  • Astronomers Uncover Clues to the Star that Wouldn't Die

    2018

  • The Supernova That Wasn't: A Tale of 3 Cosmic Eruptions

    2016

  • The Supernova That Cried Wolf

    2013

  • Echoes From an Exploding Star

    2012

  • Wildcat Alumni to Compete in This Year's Masters

    2010

Publications (312)
Recent
  • Ionized Carbon around IRC+10216

    2022

  • Infant-phase reddening by surface Fe-peak elements in a normal type Ia supernova

    2022

  • The Locus Algorithm: A novel technique for identifying optimised pointings for differential photometry

    2022

  • First Direct Detection Constraints on Planck-Scale Mass Dark Matter with Multiple-Scatter Signatures Using the DEAP-3600 Detector

    2022

  • Optical Rebrightening of Extragalactic Transients from the Zwicky Transient Facility

    2022

  • Massive stars dying alone: the remote environment of supernova 2010jp and its associated late-time source

    2022

  • Enormous explosion energy of Type IIP SN 2017gmr with bipolar $^{56$Ni ejecta}

    2021

  • Searches after Gravitational Waves Using ARizona Observatories (SAGUARO): Observations and Analysis from Advanced LIGO/Virgo's Third Observing Run

    2021

  • The Age of Westerlund 1 Revisited

    2021

  • The electron-capture origin of supernova 2018zd

    2021

  • Effect of binary evolution on the inferred initial and final core masses of hydrogen-rich, Type II supernova progenitors

    2021

  • A Bright Ultraviolet Excess in the Transitional 02es-like Type Ia Supernova 2019yvq

    2021

  • GRB 180418A: A Possibly Short Gamma-Ray Burst with a Wide-angle Outflow in a Faint Host Galaxy

    2021

  • Circumstellar Medium Constraints on the Environment of Two Nearby Type Ia Supernovae: SN 2017cbv and SN 2020nlb

    2021

  • A High-velocity Scatterer Revealed in the Thinning Ejecta of a Type II Supernova

    2021

  • Probing Kilonova Ejecta Properties Using a Catalog of Short Gamma-Ray Burst Observations

    2021

  • Simulating the formation of {ensuremath{eta} Carinae's surrounding nebula through unstable triple evolution and stellar merger-induced eruption}

    2021

  • The Blue Supergiant Progenitor of the Supernova Imposter AT 2019krl

    2021

  • SN2017jgh: a high-cadence complete shock cooling light curve of a SN IIb with the Kepler telescope

    2021

  • The Impact of Realistic Red Supergiant Mass Loss on Stellar Evolution

    2021

  • AT 2019qyl in NGC 300: Internal Collisions in the Early Outflow from a Very Fast Nova in a Symbiotic Binary

    2021

  • Revealing Efficient Dust Formation at Low Metallicity in Extragalactic Carbon-rich Wolf-Rayet Binaries

    2021

  • The Emirates Mars Mission (EMM) Emirates Mars InfraRed Spectrometer (EMIRS) Instrument

    2021

  • Supernova 2018cuf: A Type IIP Supernova with a Slow Fall from Plateau

    2021

  • Discovery of a 310 Day Period from the Enshrouded Massive System NaSt1 (WR 122)

    2021

  • The possible disappearance of a massive star in the low-metallicity galaxy PHL 293B

    2020

  • The slow demise of the long-lived SN 2005ip

    2020

  • Carbon Chain Depletion of 2I/Borisov

    2020

  • A new and unusual LBV-like outburst from a Wolf-Rayet star in the outskirts of M33

    2020

  • Massive Black Holes Regulated by Luminous Blue Variable Mass Loss and Magnetic Fields

    2020

  • High-resolution spectroscopy of SN 2017hcc and its blueshifted line profiles from post-shock dust formation

    2020

  • Erratum: Inferring the parallax of Westerlund 1 from Gaia DR2

    2020

  • Discovery and Rapid Follow-up Observations of the Unusual Type II SN 2018ivc in NGC 1068

    2020

  • SN 2014ab: an aspherical Type IIn supernova with low polarization

    2020

  • Inferring the parallax of Westerlund 1 from Gaia DR2

    2020

  • A new mass-loss rate prescription for red supergiants

    2020

  • Constraining the Source of the High-velocity Ejecta in Type Ia SN 2019ein

    2020

  • Predictions for the hydrogen-free ejecta of pulsational pair-instability supernovae

    2020

  • Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the Kepler 2 Observations

    2019

  • Discovery of an Intermediate-luminosity Red Transient in M51 and Its Likely Dust-obscured, Infrared-variable Progenitor

    2019

  • Nebular Hensuremath{alpha} Limits for Fast Declining SNe Ia

    2019

  • K2 Observations of SN 2018oh Reveal a Two-component Rising Light Curve for a Type Ia Supernova

    2019

  • The diverse lives of progenitors of hydrogen-rich core-collapse supernovae: the role of binary interaction

    2019

  • Observational Signature of Circumstellar Interaction and $^56$Ni-mixing in the Type II Supernova 2016gfy

    2019

  • The Type II superluminous SN 2008es at late times: near-infrared excess and circumstellar interaction

    2019

  • SN 2017gmr: An Energetic Type II-P Supernova with Asymmetries

    2019

  • The Type II-plateau Supernova 2017eaw in NGC 6946 and Its Red Supergiant Progenitor

    2019

  • Searching for Highly Magnified Stars at Cosmological Distances: Discovery of a Redshift 0.94 Blue Supergiant in Archival Images of the Galaxy Cluster MACS J0416.1-2403

    2019

  • Signatures of circumstellar interaction in the unusual transient AT 2018cow

    2019

  • The SPIRITS Sample of Luminous Infrared Transients: Uncovering Hidden Supernovae and Dusty Stellar Outbursts in Nearby Galaxies

    2019

  • The isolation of luminous blue variables resembles aging B-type supergiants, not the most massive unevolved stars

    2019

  • Searches after Gravitational Waves Using ARizona Observatories (SAGUARO): System Overview and First Results from Advanced LIGO/Virgotextquoterights Third Observing Run

    2019

  • Supernova 2014C: Ongoing Interaction with Extended Circumstellar Material with Silicate Dust

    2019

  • Ultraviolet Mg II emission from fast neutral ejecta around Eta Carinae

    2019

  • On the Gaia DR2 distances for Galactic luminous blue variables

    2019

  • Discrepancies in the ages of young star clusters; evidence for mergers?

    2019

  • X-ray emission from SN 2012ca: A Type Ia-CSM supernova explosion in a dense surrounding medium

    2018

  • Extreme magnification of an individual star at redshift 1.5 by a galaxy-cluster lens

    2018

  • SOFIA/FORCAST Observations of the Luminous Blue Variable Candidates MN 90 and HD 168625

    2018

  • Strong late-time circumstellar interaction in the peculiar supernova iPTF14hls

    2018

  • Extreme isolation of WN3/O3 stars and implications for their evolutionary origin as the elusive stripped binaries

    2018

  • A surge of light at the birth of a supernova

    2018

  • ASASSN-15nx: A Luminous Type II Supernova with a ldquoPerfectrdquo Linear Decline

    2018

  • Exceptionally fast ejecta seen in light echoes of Eta Carinae's Great Eruption

    2018

  • Light echoes from the plateau in Eta Carinae's Great Eruption reveal a two-stage shock-powered event

    2018

  • A disrupted molecular torus around Eta Carinae as seen in $^{12$CO with ALMA}

    2018

  • SN2012ab: a peculiar Type IIn supernova with aspherical circumstellar material

    2018

  • The Type IIn Supernova SN 2010bt: The Explosion of a Star in Outburst

    2018

  • SN 2013fs and SN 2013fr: exploring the circumstellar-material diversity in Type II supernovae

    2018

  • SN 2017ein and the Possible First Identification of a Type Ic Supernova Progenitor

    2018

  • A radial velocity survey of the Carina Nebula's O-type stars

    2018

  • SPIRITS 16tn in NGC 3556: A Heavily Obscured and Low-luminosity Supernova at 8.8 Mpc

    2018

  • Ultraviolet Detection of the Binary Companion to the Type IIb SN 2001ig

    2018

  • Erratum: ldquoSN 2017ein and the Possible First Identification of a Type Ic Supernova Progenitorrdquo ( A href=``http://doi.org/10.3847/1538-4357/aac32c'' 2018, ApJ, 860, 90 /A )

    2018

  • Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-degenerate Double-detonation Type Ia Supernovae

    2018

  • Modelling luminous-blue-variable isolation

    2017

  • LOSS Revisited. II. The Relative Rates of Different Types of Supernovae Vary between Low- and High-mass Galaxies

    2017

  • Multiepoch Spectropolarimetry of SN 2011fe

    2017

  • SPIRITS: Uncovering Unusual Infrared Transients with Spitzer

    2017

  • Endurance of SN 2005ip after a decade: X-rays, radio and H{$alpha$ like SN 1988Z require long-lived pre-supernova mass-loss}

    2017

  • A moderately precise dynamical age for the Homunculus of Eta Carinae based on 13 years of HST imaging

    2017

  • Constraints on the Progenitor of SN 2010jl and Pre-existing Hot Dust in its Surrounding Medium

    2017

  • The dusty silhouette jet HH 1019 in the Carina Nebula

    2017

  • Multi-messenger Observations of a Binary Neutron Star Merger

    2017

  • Predicting the Presence of Companions for Stripped-envelope Supernovae: The Case of the Broad-lined Type Ic SN 2002ap

    2017

  • Luminous blue variables and the fates of very massive stars

    2017

  • The nearby Type Ibn supernova 2015G: signatures of asymmetry and progenitor constraints

    2017

  • Ultraviolet spectroscopy of the blue supergiant SBW1: the remarkably weak wind of a SN 1987A analogue

    2017

  • Optical and IR observations of SN 2013L, a Type IIn Supernova surrounded by asymmetric CSM

    2017

  • The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. IV. Detection of Near-infrared Signatures of r-process Nucleosynthesis with Gemini-South

    2017

  • Resolving the H{$alpha$-emitting Region in the Wind of $eta$ Carinae}

    2017

  • The Candidate Progenitor of the Type IIn SN 2010jl Is Not an Optically Luminous Star

    2017

  • A gravitational-wave standard siren measurement of the Hubble constant

    2017

  • Proper motions of collimated jets from intermediate-mass protostars in the Carina Nebula

    2017

  • Proper motions of five OB stars with candidate dusty bow shocks in the Carina Nebula

    2017

  • SPIRITS 15c and SPIRITS 14buu: Two Obscured Supernovae in the Nearby Star-forming Galaxy IC 2163

    2017

  • The Canonical Luminous Blue Variable AG Car and Its Neighbor Hen 3-519 are Much Closer than Previously Assumed

    2017

  • The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/Virgo GW170817. II. UV, Optical, and Near-infrared Light Curves and Comparison to Kilonova Models

    2017

  • Rising from the Ashes: Mid-infrared Re-brightening of the Impostor SN 2010da in NGC 300

    2016

  • Asymmetries in SN 2014J near Maximum Light Revealed through Spectropolarimetry

    2016

  • Massive stars dying alone: the extremely remote environment of SN 2009ip

    2016

  • ALMA-resolved salt emission traces the chemical footprint and inner wind morphology of VY Canis Majoris

    2016

  • Ancient eruptions of {$eta$ Carinae: a tale written in proper motions}

    2016

  • The Persistent Eruption of UGC 2773-OT: finally, a decade-long extragalactic Eta Carinae analogue

    2016

  • Disappearance of the Progenitor of Supernova iPTF13bvn

    2016

  • Three-dimensional Distribution of Ejecta in Supernova 1987A at 10,000 Days

    2016

  • [Fe II] jets from intermediate-mass protostars in Carina

    2016

  • A Systematic Study of Mid-infrared Emission from Core-collapse Supernovae with SPIRITS

    2016

  • An optical and near-infrared study of the Type Ia/IIn Supernova PS15si

    2016

  • Massive star mergers and the recent transient in NGC 4490: a more massive cousin of V838 Mon and V1309 Sco

    2016

  • An Excess of Mid-infrared Emission from the Type Iax SN 2014dt

    2016

  • Solar abundances of rock-forming elements, extreme oxygen and hydrogen in a young polluted white dwarf

    2016

  • The isolation of luminous blue variables: on subdividing the sample

    2016

  • The Afterglow and Early-type Host Galaxy of the Short GRB 150101B at z = 0.1343

    2016

  • On the Progenitor System of the Type Iax Supernova 2014dt in M6

    2015

  • Multiwavelength observations of NaSt1 (WR 122): equatorial mass loss and X-rays from an interacting Wolf-Rayet binary

    2015

  • Disentangling the outflow and protostars in HH 900 in the Carina Nebula

    2015

  • On the nature of Type IIn/Ia-CSM supernovae: optical and near-infrared spectra of SN 2012ca and SN 2013dn

    2015

  • Constraints on Type IIn supernova progenitor outbursts from the Lick Observatory Supernova Sea

    2015

  • Ultraviolet Spectroscopy of Type IIb Supernovae: Diversity and the Impact of Circumstellar Material

    2015

  • Observations of Type Ia Supernova 2014J with FLITECAM/SOFIA

    2015

  • A Machine-learning Method to Infer Fundamental Stellar Parameters from Photometric Light Curves

    2015

  • PTF11iqb: cool supergiant mass-loss that bridges the gap between Type IIn and normal supernovae

    2015

  • Spectropolarimetry of SN 2011dh in M51: geometric insights on a Type IIb supernova progenitor and explosion

    2015

  • A Survey of Irradiated Pillars, Globules, and Jets in the Carina Nebula

    2015

  • Mapping High-velocity Hα and Lyα Emission from Supernova 1987A

    2015

  • The Destruction of the Circumstellar Ring of SN 1987A

    2015

  • SOFIA/FORCAST Observations of Warm Dust in S106: A Fragmented Environment

    2015

  • Luminous blue variables are antisocial: their isolation implies that they are kicked mass gainers in binary evolution

    2015

  • Late-time spectroscopy of SN 2002hh: a continued visible light echo with no shock interaction yet

    2015

  • SN Hunt 248: a super-Eddington outburst from a massive cool hypergiant

    2015

  • What powers the 3000-day light curve of SN 2006gy?

    2015

  • The Supernova Spectropolarimetry Project: Evolution of Asymmetries in the Very Luminous Type Ib SN 2012au

    2014

  • SDSS1133: an unusually persistent transient in a nearby dwarf galaxy

    2014

  • The remarkably similar explosions of SN2009ip and SN2010mc, and the late fading of Type IIn supernovae

    2014

  • Powerful jets driven by intermediate-mass protostars in the Carina Nebula

    2014

  • The type IIb supernova 2013df and its cool supergiant progenitor

    2014

  • SN 2009ip and SN 2010mc: Core-collapse type IIn supernovae arising from blue supergiants

    2014

  • Spectropolarimetry of SN 2011fe

    2014

  • Kinematics of powerful jets from intermediate-mass protostars in the Carina Nebula

    2014

  • Sher 25: Pulsating but apparently alone

    2014

  • The Supernova Spectropolarimetry Project: Results from Multi-Epoch Observations of the Type IIn SN 2010jl

    2014

  • Light Echoes from Eta Carinae's Great Eruption: Spectrophotometric evolution and the rapid formation of nitrogen-rich molecules

    2014

  • Uncovering the putative B-star binary companion of theSN 1993J progenitor

    2014

  • The yellow hyper giant HR 5171A: Resolving a massive interacting binary in the common envelope phase

    2014

  • Preparing for an Explosion:Hydrodynamic instabilities and turbulence in presupernovae

    2014

  • Type IIb supernova SN 2011dh: Spectra and photometry from the ultraviolet to the near-infrared

    2014

  • Extended red objects and stellar-wind bow shocks in the Carina Nebula

    2014

  • The Supernova Spectropolarimetry Project: Photometric Followup in the Optical and Near- Infrared by the Mount Laguna Supernova Survey

    2014

  • Mass Loss: Its Effect on the Evolution and Fate of High-Mass Stars

    2014

  • Multi-epoch spectropolarimetry of SN 2009ip: direct evidence for aspherical circumstellar material

    2014

  • A model for the 19th century eruption of Eta Carinae: CSM interaction like a scaled-down type IIn supernova

    2013

  • The crab nebula and the class of type iin-p supernovae caused by sub-energetic electron-capture explosions

    2013

  • [Fe II] Emission Tracing Massive, Irradiated Jets from Intermediate-Mass Protostars in the Carina Nebula

    2013

  • [Fe II] Emission Tracing Dense Jets from Intermediate-mass Protostars in Carina

    2013

  • SN 2011ht: Confirming a class of interacting supernovae with plateau light curves (type IIn-P)

    2013

  • Spectrophotometric Evolution of Eta Carinae's Great Eruption

    2013

  • Extended Red Objects and Stellar Wind Bow Shocks in the Carina Nebula

    2013

  • Near-infrared spectroscopy of SN 2009ip's 2012 brightening reveals a dusty pre-supernova environment

    2013

  • The unprecedented 2012 outburst of SN 2009ip: A luminous blue variable star becomes a true supernova

    2013

  • The Nature of LBVs

    2013

  • The progenitor of supernova 2011dh has vanished

    2013

  • The Unprecedented Third Outburst of SN 2009ip: A Luminous Blue Variable Becomes a Supernova

    2013

  • Systematic blueshift of line profiles in the type IIn supernova 2010jl: Evidence for post-shock dust formation?

    2012

  • Spectroscopic Time-Series of Transients with Light Echoes

    2012

  • Discovery and early multi-wavelength measurements of the energetic type IC supernova ptf12gzk: A massive-star explosion in a dwarf host galaxy

    2012

  • Light echoes reveal an unexpectedly cool σ Carinae during its nineteenth-century Great Eruption

    2012

  • Supernova 1998S at 14 years postmortem: Continuing circumstellar interaction and dust formation

    2012

  • Rest et al. reply

    2012

  • SN 2010jp (PTF10aaxi): A jet in a Type II supernova

    2012

  • SN 2011hw: Helium-rich circumstellar gas and the luminous blue variable to Wolf-Rayet transition in supernova progenitors

    2012

  • SN2010jp: A Jet-Driven Type II Supernova

    2012

  • All Things Homunculus

    2012

  • The Supernova Spectropolarimetry Project; A Study of the Evolution of Aspherical Stellar Explosions

    2012

  • HST-COS observations of hydrogen, helium, carbon, and nitrogen emission from the SN 1987A reverse shock

    2011

  • SN 2010jp (PTF10aaxi): A jet-driven type II supernova

    2011

  • A pan-carina young stellar object catalog: Intermediate-mass young stellar objects in the Carina Nebula identified via mid-infrared excess emission

    2011

  • An introduction to the Chandra Carina Complex Project

    2011

  • Explosive outflows powered by the decay of non-hierarchical multiple systems of massive stars: Orion BN/KL

    2011

  • Explosions triggered by violent binary-star collisions: Application to Eta Carinae and other eruptive transients

    2011

  • The massive progenitor of the possible type II-Linear supernova 2009hd in Messier 66

    2011

  • A disc inside the bipolar planetary nebula M2-9

    2011

  • Episodic mass loss in binary evolution to the Wolf-Rayet phase: Keck and HST proper motions of RY Scuti's nebula

    2011

  • A revised historical light curve of Eta Carinae and the timing of close periastron encounters

    2011

  • A massive progenitor of the luminous type IIn supernova 2010jl

    2011

  • X-ray star clusters in the Carina Complex

    2011

  • A Spitzer survey for dust in type IIn supernovae

    2011

  • X-ray illumination of the ejecta of supernova 1987A

    2011

  • Observed fractions of core-collapse supernova types and initial masses of their single and binary progenitor stars

    2011

  • A catalog of Chandra X-ray sources in the Carina Nebula

    2011

  • Penetrating the homunculus-near-infrared adaptive optics images of Eta Carinae

    2011

  • Numerical models of collisions between core-collapse supernovae and circumstellar shells

    2010

  • SN 2008iy: An unusual Type IIn Supernova with an enduring 400-d rise time

    2010

  • HH jets aligned perpendicular to elephant trunks

    2010

  • Erratum: On the progenitor of the type II-plateau SN 2008cn in NGC 4603 (ApJ (2009) 706 (1174))

    2010

  • Episodic post-shock dust formation in the colliding winds of Eta Carinae

    2010

  • Design and implementation of the NUV/optical widefield Star Formation Camera for the Theia observatory

    2010

  • New observations of the very luminous supernova 2006gy: Evidence for echoes

    2010

  • Eruptive outflow phases of massive stars

    2010

  • Spitzer space telescope observations of the Carina nebula: The steady march of feedback-driven star formation

    2010

  • Observing supernova 1987A with the refurbished hubble space telescope

    2010

  • HST/ACS Hα imaging of the Carina Nebula: Outflow activity traced by irradiated Herbig-Haro Jets

    2010

  • SN 2008S: A cool super-eddington wind in a supernova impostor

    2009

  • Massive star formation and feedback in W49A: The source of our Galaxy's most luminous water maser outflow

    2009

  • Improved standardization of type II-P supernovae: Application to an expanded sample

    2009

  • UV, IR, and MM studies of CO surrounding the red supergiant α orionis (M2 Iab)

    2009

  • Red supergiants as potential type IIn supernova progenitors: Spatially resolved 4.6 μm CO emission aroung VY CMa and betelgeuse

    2009

  • On the progenitor of the type II-plateau SN 2008cn in NGC 4603

    2009

  • The exceptionally luminous type II-linear supernova 2008es

    2009

  • Erratum: Spitzer space telescope infrared imaging and spectroscopy of the Crab nebula (The Astronomical Journal (2006) 132, (1610))

    2009

  • Possible detection of a pair instability supernova in the modern universe, and implications for the first stars

    2008

  • Late-time observations of SN 2006gy: Still going strong

    2008

  • Galactic twins of the ring nebula around SN1987A and a possible LBV-like phase for SK-69 202

    2008

  • On the role of the WNH phase in the evolution of very massive stars: Enabling the LBV instability with feedback

    2008

  • A three-decade outburst of the lmc luminous blue variable R127 draws to a close

    2008

  • Dust formation and He II λ4686 emission in the dense shell of the peculiar type Ib supernova 2006jc

    2008

  • The star formation observatory (SFO) mission to study cosmic origins near and far

    2008

  • A blast wave from the 1843 eruption of η Carinae

    2008

  • A study of H sub 2 /sub emission in three bipolar proto-planetary nebulae: IRAS 16594-4656, Hen 3-401, and Rob 22

    2008

  • The detection of a light echo from the type Ia supernova 2006X in M100

    2008

  • SN 2006tf: Precursor eruptions and the optically thick regime of extremely luminous type IIn supernovae

    2008

  • Galactic twins of the nebula around SN 1987A: Hints that LBVs may be supernova progenitors

    2007

  • The structure of the Homunculus. II. Modeling the physical conditions in η Carinae's molecular shell

    2007

  • Episodic mass loss and pre-SN circumstellar envelopes

    2007

  • High resolution spectroscopy of SN1987A's rings: He i λ 10830 and Hα from the hotspots

    2007

  • SN 2006jc: A Wolf-Rayet star exploding in a dense He-rich circumstellar medium

    2007

  • A silicate disk in the heart of the Ant

    2007

  • SN 2006gy: Discovery of the most luminous supernova ever recorded, powered by the death of an extremely massive star like η carinae

    2007

  • A census of the Carina Nebula - II. Energy budget and global properties of the nebulosity

    2007

  • Interstellar absorption-line evidence for high-velocity expanding structures in the Carina Nebula foreground

    2007

  • Shell-shocked diffusion model for the light curve of sn 2006gy

    2007

  • And in the darkness bind them: Equatorial rings, B[e] supergiants, and the waists of Bipolar Nebulae sup 1 /sup

    2007

  • Discovery of a nearby twin of SN 1987A'S nebula around the luminous blue variable HD 168625: Was SK - 69 202 an LBV?

    2007

  • A spectroscopic study of mass outflows in the interacting binary RY scuti

    2007

  • The structure of the homunculus. III. Forming a disk and bipolar lobes in a rotating surface explosion

    2007

  • Hubble space telescope observations of oxygen-rich supernova remnants in the magellanic clouds. III. WFPC2 imaging of the young, Crab-like supernova remnant SNR 0540-69.3

    2006

  • Evolution of the reverse shock emission from SNR 1987A

    2006

  • Using H sub 2 /sub emission to study the fast wind in proto-planetary nebulae

    2006

  • Spitzer space telescope infrared imaging and spectroscqpy of the Crab Nebula

    2006

  • [Ti II] and [Ni II] emission from the strontium filament of η Carinae

    2006

  • On the role of continuum-driven eruptions in the evolution of very massive stars and population III stars

    2006

  • Early infrared spectral development of V1187 scorpii (nova scorpii 2004 NO. 2)

    2006

  • Erratum: A census of the Carina Nebula - I. Cumulative energy input from massive stars (Monthly Notices of the Royal Atronomical Society (2006) 367 (763-772))

    2006

  • Cleaning up η Carinae: Detection of ammonia in the Homunculus Nebula

    2006

  • A census of the Carina Nebula - I. Cumulative energy input from massive stars

    2006

  • The structure of the Homunculus. I. Shape and latitude dependence from H sub 2 /sub and [Fe II] velocity maps of η Carinae

    2006

  • Infrared [Fe II] emission from P Cygni's nebula: Atomic data, mass, kinematics, and the 1600 AD outburst

    2006

  • Irradiated and bent jets in the Orion Nebula

    2006

  • The UV scattering halo of the central source associated with η carinae

    2006

  • The [O III] veil: Astropause of η Carinae's wind?

    2005

  • Kinematic structure of H sub 2 /sub and [Fe II] in the bipolar planetary nebula M2-9

    2005

  • Chandra Orion ultradeep project census of X-ray stars in the BN-KL and OMC-1S regions

    2005

  • Outflows in the Orion Nebula: HH 540 from the beehive proplyd

    2005

  • The reverse shock of SNR 1987A at 18 years after outburst

    2005

  • Bipolar symbiotic planetary nebulae in the thermal infrared: M2-9, Mz 3, and He 2-104

    2005

  • Discovery of a candidate protoplanetary disk around the embedded source IRc9 in Orion

    2005

  • Nearby regions of massive star formation

    2005

  • Opening the treasure Chest: A newborn star cluster emerges from its dust pillar in Carina

    2005

  • Simba observations of the keyhole nebula

    2005

  • New silhouette disks with reflection nebulae and outflows in the Orion Nebula and M43

    2005

  • Thermal dust emission from proplyds, unresolved disks, and shocks in the Orion Nebula

    2005

  • Doppler tomography of the Little Homunculus: High-resolution spectra of [Fe II] λ16 435 around Eta Carinae

    2005

  • HH 666: The axis of evil in the Carina Nebula

    2004

  • Spatially extended K I λ7699 emission in the nebula of VY CMa: Kinematics and geometry

    2004

  • The purple haze of ν Carinae: Binary-induced variability?

    2004

  • Thermal-infrared detection of optical outflow sources in OMC-1 South

    2004

  • Kinematics and ultraviolet to infrared morphology of the inner Homunculus of η Carinae

    2004

  • The missing luminous blue variables and the bistability jump

    2004

  • Identification of emission lines in the low-ionization strontium filament near Eta Carinae

    2004

  • Nitrogen and oxygen abundance variations in the outer ejecta of η Carinae: Evidence for recent chemical enrichment

    2004

  • Carina's defiant finger: HST observations of a photoevaporating globule in NGC 3372

    2004

  • The systemic velocity of eta Carinae

    2004

  • Waiting in the wings: Reflected X-ray emission from the Homunculus nebula

    2004

  • The integrated optical spectrum of the Crab nebula and evidence for its fading synchrotron continuum

    2003

  • Spatial distribution of near-infrared and optical emission properties in the bipolar nebula Menzel 3

    2003

  • The mysterious ring in the open cluster NGC 3572: Planetary nebula or photoevaporating globule?

    2003

  • Discovery of a little homunculus within the Homunculus Nebula of η Carinae

    2003

  • Latitude-dependent effects in the stellar wind of η Carinae

    2003

  • Numerous proplyd candidates in the harsh environment of the Carina Nebula

    2003

  • Crossing the yellow void: Spatially resolved spectroscopy of the post-red supergiant IRC +10420 and its circumstellar ejecta

    2002

  • Dissecting the Homunculus nebula around Eta Carinae with spatially resolved near-infrared spectroscopy

    2002

  • Infrared [Fe II] emission in the circumstellar nebulae of luminous blue variables

    2002

  • The WR+OB progenitor RY Scuti: Intensive spectroscopy of its compact double-ring nebula

    2002

  • Near-infrared and optical emission-line structure of the Keyhole Nebula in NGC 3372

    2002

  • Proper motion and excitation structure of the expanding ionized rings around RY Scuti

    2001

  • Post-eruption detection of variable 12 in NGC 2403 (SN 1954j): Another η Carinae variable

    2001

  • Thermal infrared imaging of the bipolar H II region S106

    2001

  • The shape and orientation of the Homunculus Nebula based on spectroscopic velocities

    2001

  • The shocking near-infrared spectrum of the Homunculus Nebula surrounding η Carinae

    2001

  • The asymmetric nebula surrounding the extreme red supergiant VY Canis Majoris

    2001

  • Keck LWS images of the compact nebula around RY Scuti in the thermal infrared

    2001

  • Large-scale structure of the Carina Nebula

    2000

  • A massive cool dust torus around η Carinae?

    2000

  • Recent changes in the near-ultraviolet and optical structure of η carinae

    2000

  • Thermal infrared imaging of ultracompact H II regions in W49A

    2000

  • Recent changes in the near-infrared structure of η Carinae

    2000

  • η Carinae: Testing a binary orbit model with the Hubble Space Telescopei/Space Telescope Imaging Spectrograph

    2000

  • Thermal infrared images of the remarkable young nearby multiple star HD 98800

    1999

  • Hubble Space Telescope images of the compact nebula around RY Scuti

    1999

  • η Carinae's second eruption and the light curves of the η Carinae variables

    1999

  • Proper motions in the ejecta of η Carinae with a 50 year baseline

    1998

  • The infrared morphology of nη Carinae

    1998

  • HST and infrared images of the circumstellar environment of the cool hypergiant IRC+10420

    1997

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