David Sand

KMap

❝

Dr. David Sand is an observational astronomer with a variety of interests. He spends a lot of his time searching for and understanding the smallest galaxies in the Universe, as they are extremely dark matter dominated and are signposts for structure formation. Dr. Sand is also broadly interested in time domain astronomy, and in particular understanding the progenitors and explosion mechanisms of supernovae. Dr. Sand does some instrument development to further his team's scientific goals.

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Courses

SFSEOP
Seminiar with a Focus on Stellar Evolution from an Observational Perspective
SDG
Structure and Dynamics of Galaxies
SFSEOP
Seminar with a Focus on Stellar Evolution from an Observational Perspective
S
Stars

FA
Fundamentals of Astronomy

Grants

The First Early FUV Observations of a Type IIP Supernova
Principal Investigator (PI)
2023
$23.8K
Active
Gas Content of a New Class of Stellar System in the Virgo Cluster
Principal Investigator (PI)
2023
$11.2K
Active
Collaborative Research: Dwarf Galaxies Over Cosmic Time
Principal Investigator (PI)
2022
$271.5K
Active
Bringing Supernova Light-Curve Modeling into the LSST Era
Principal Investigator (PI)
2022
$85.0K
Active
Ultra-Diffuse Galaxy Formation in Groups -- Tidal or Born That Way?
Principal Investigator (PI)
2022
$43.6K
Active
Completing the Picture: The Globular Cluster Systems of Field Ultra-Diffuse Galaxies
Principal Investigator (PI)
2022
$11.0K
Active
WoU-MMA: An Integrated Time Domain System for Discovery and Fast Follow-up of Gravitational Wave Events and Other Transients
Principal Investigator (PI)
2021
$875.4K
Active
Progenitors and Explosions of TESS Supernovae
Principal Investigator (PI)
2021
$70.0K
Active
The NGC253 Satellite Luminosity Function: A Case Study for Low Density Environments
Principal Investigator (PI)
2021
$46.7K
Active

Confirming a Failed Supernova Candidate in M51
Principal Investigator (PI)
2021
$41.6K
Active

News

Mysterious 'blue blobs' reveal a new kind of star system
2022
Ripples in Space: The Little Telescope That Could
2017

In Hunting Supernovae, 'Get Them While They're Young'
2017

Publications (139)

Recent

Pegasus IV: Discovery and Spectroscopic Confirmation of an Ultra-Faint Dwarf Galaxy in the Constellation Pegasus
2022
Weak Mass Loss from the Red Supergiant Progenitor of the Type II SN 2021yja
2022
Infant-phase reddening by surface Fe-peak elements in a normal type Ia supernova
2022
The DECam Local Volume Exploration Survey Data Release 2
2022
Carnegie Supernova Project-II: Near-infrared Spectroscopy of Stripped-envelope Core-collapse Supernovae
2022
Hubble Space Telescope Observations of NGC 253 Dwarf Satellites: Three Ultra-faint Dwarf Galaxies
2022
Nebular-phase spectra of Type Ia supernovae from the Las Cumbres Observatory Global Supernova Project
2022
AGC 226178 and NGVS 3543: Two Deceptive Dwarfs toward Virgo
2022
Hubble Space Telescope Imaging of Isolated Local Volume Dwarfs GALFA Dw3 and Dw4
2022
A Systematic Exploration of Kilonova Candidates from Neutron Star Mergers during the Third Gravitational-wave Observing Run
2022
The LBT satellites of Nearby Galaxies Survey (LBT-SONG): the satellite population of NGC 628
2021
The Early Discovery of SN 2017ahn: Signatures of Persistent Interaction in a Fast-declining Type II Supernova
2021
AT 2019qyl in NGC 300: Internal Collisions in the Early Outflow from a Very Fast Nova in a Symbiotic Binary
2021
H\ensuremath{\alpha} Reverberation Mapping of the Intermediate-mass Active Galactic Nucleus in NGC 4395
2021
SN 2017fgc: A Fast-expanding Type Ia Supernova Exploded in Massive Shell Galaxy NGC 474
2021
The Gravity Collective: A Search for the Electromagnetic Counterpart to the Neutron Star-Black Hole Merger GW190814
2021
Introducing the LBT Imaging of Galactic Halos and Tidal Structures (LIGHTS) survey. A preview of the low surface brightness Universe to be unveiled by LSST
2021
SN 2019muj - a well-observed Type Iax supernova that bridges the luminosity gap of the class
2021
The Blue Supergiant Progenitor of the Supernova Imposter AT 2019krl
2021
Satellites around Milky Way Analogs: Tension in the Number and Fraction of Quiescent Satellites Seen in Observations versus Simulations
2021
NGC 5128 Globular Cluster Candidates Out to 150 kpc: A Comprehensive Catalog from Gaia and Ground-based Data
2021
Circumstellar Medium Constraints on the Environment of Two Nearby Type Ia Supernovae: SN 2017cbv and SN 2020nlb
2021
An Exceptional Dimming Event for a Massive, Cool Supergiant in M51
2021
Forbidden hugs in pandemic times. II. The luminous red nova variety: AT 2020hat and AT 2020kog
2021
Hubble Space Telescope Imaging of Isolated Local Volume Dwarfs GALFA-Dw3 and Dw4
2021
A Bright Ultraviolet Excess in the Transitional 02es-like Type Ia Supernova 2019yvq
2021
RR Lyrae Stars in the Newly Discovered Ultra-faint Dwarf Galaxy Centaurus I
2021
AT 2020iko: A WZ Sge-type Dwarf Nova Candidate with an Anomalous Precursor Event
2021
Hubble Space Telescope Observations of Two Faint Dwarf Satellites of Nearby LMC Analogs from MADCASH
2021
An impostor among us II: Progenitor, environment, and modelling of AT 2016jbu
2021
Eridanus IV: an Ultra-faint Dwarf Galaxy Candidate Discovered in the DECam Local Volume Exploration Survey
2021
Evidence for multiple origins of fast declining Type II supernovae from spectropolarimetry of SN 2013ej and SN 2017ahn
2021
ASASSN-15hy: An Underluminous, Red 03fg-like Type Ia Supernova
2021
Resolved Dwarf Galaxy Searches within 5 Mpc with the Vera Rubin Observatory and Subaru Hyper Suprime-Cam
2021
A population of luminous globular clusters and stripped nuclei with elevated mass to light ratios around NGC 5128
2021
The DECam Local Volume Exploration Survey: Overview and First Data Release
2021
Carnegie Supernova Project: The First Homogeneous Sample of Super-Chandrasekhar-mass/2003fg-like Type Ia Supernovae
2021
A search for satellite galaxies of nearby star-forming galaxies with resolved stars in LBT-SONG
2021
AT 2019qyl in NGC 300: Early Outflow Collisions for a Very Fast Nova in a Symbiotic Binary
2021
An impostor among us I: Photometric and spectroscopic evolution of AT 2016jbu
2021
Discovery of an Ultra-faint Stellar System near the Magellanic Clouds with the DECam Local Volume Exploration Survey
2021
Eridanus II: A Fossil from Reionization with an Off-center Star Cluster
2021
Evidence for Ultra-diffuse Galaxy Formation through Tidal Heating of Normal Dwarfs
2021
Supernova 2018cuf: A Type IIP Supernova with a Slow Fall from Plateau
2020
Constraining the Source of the High-velocity Ejecta in Type Ia SN 2019ein
2020
The Elusive Distance Gradient in the Ultrafaint Dwarf Galaxy Hercules: A Combined Hubble Space Telescope and Gaia View
2020
Hubble Space Telescope Imaging of Antlia B: Star Formation History and a New Tip of the Red Giant Branch Distance
2020
Optical and Near-infrared Observations of the Nearby SN Ia 2017cbv
2020
Neutral Hydrogen Observations of Low Surface Brightness Galaxies around M101 and NGC 5485
2020
SN 2014ab: an aspherical Type IIn supernova with low polarization
2020
Robotic reverberation mapping of the broad-line radio galaxy 3C 120
2020
Searches after Gravitational Waves Using ARizona Observatories (SAGUARO): Observations and Analysis from Advanced LIGO/Virgo's Third Observing Run
2020
SN 2019ehk: A Double-peaked Ca-rich Transient with Luminous X-Ray Emission and Shock-ionized Spectral Features
2020
The Satellite Luminosity Function of M101 into the Ultra-faint Dwarf Galaxy Regime
2020
A Mildly Relativistic Outflow from the Energetic, Fast-rising Blue Optical Transient CSS161010 in a Dwarf Galaxy
2020
Two Ultra-faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey
2020
Strong Near-Infrared Carbon Absorption in the Transitional Type Ia SN 2015bp
2020
The luminous red nova variety: AT 2020hat and AT 2020kog
2020
The case for strangulation in low-mass hosts: DDO 113
2020
The electron-capture origin of supernova 2018zd
2020
SN 2013aa and SN 2017cbv: Two Sibling Type Ia Supernovae in the Spiral Galaxy NGC 5643
2020
The Steward Alerts for Science System (SASSy)
2020
The Gravitational Wave Treasure Map: A Tool to Coordinate, Visualize, and Assess the Electromagnetic Follow-Up of Gravitational Wave Events
2020
A Gaia-based Catalog of Candidate Stripped Nuclei and Luminous Globular Clusters in the Halo of Centaurus A
2020
The progenitor of the supernova imposter AT 2019krl: a SN 2008S-like transient from a blue supergiant
2020
The long-lived Type IIn SN 2015da: Infrared echoes and strong interaction within an extended massive shell
2020
SN 2017gmr: An Energetic Type II-P Supernova with Asymmetries
2019
Multi-Messenger Astronomy with Extremely Large Telescopes
2019
K2 Observations of SN 2018oh Reveal a Two-component Rising Light Curve for a Type Ia Supernova
2019
Carnegie Supernova Project-II: The Near-infrared Spectroscopy Program
2019
Discovery and Rapid Follow-up Observations of the Unusual Type II SN 2018ivc in NGC 1068
2019
Searches after Gravitational Waves Using ARizona Observatories (SAGUARO): System Overview and First Results from Advanced LIGO/Virgo\textquoterights Third Observing Run
2019
A new class of flares from accreting supermassive black holes
2019
A Physical Basis for the H-band Blue-edge Velocity and Light-curve Shape Correlation in Context of Type Ia Supernova Explosion Physics
2019
The Type II-P Supernova 2017eaw: From Explosion to the Nebular Phase
2019
The Wide Field Infrared Survey Telescope: 100 Hubbles for the 2020s
2019
Evidence for a Chandrasekhar-mass explosion in the Ca-strong 1991bg-like type Ia supernova 2016hnk
2019
The Young and Nearby Normal Type Ia Supernova 2018gv: UV-Optical Observations and the Earliest Spectropolarimetry
2019
The M101 Satellite Luminosity Function and the HaloâHalo Scatter among Local Volume Hosts
2019
The Lick AGN Monitoring Project 2011: Photometric Light Curves
2019
CCCP and MENeaCS: (updated) weak-lensing masses for 100 galaxy clusters
2019
Signatures of circumstellar interaction in the Type IIL supernova ASASSN-15oz
2019
The aspherical explosion of the Type IIP SN 2017gmr$^{\textdagger}$
2019
WFIRST: Enhancing Transient Science and Multi-Messenger Astronomy
2019
Carnegie Supernova Project-II: Using Near-infrared Spectroscopy to Determine the Location of the Outer $^56$Ni in Type Ia Supernovae
2019
Uncovering the Orbit of the Hercules Dwarf Galaxy
2019
ASTRO2020 White Paper: JWST: Probing the Epoch of Reionization with a Wide Field Time-Domain Survey
2019
Astro2020 Science White Paper: Radio Counterparts of Compact Object Mergers in the Era of Gravitational-Wave Astronomy
2019
Hyper Wide Field Imaging of the Local Group Dwarf Irregular Galaxy IC 1613: An Extended Component of Metal-poor Stars
2019
Tidal Destruction in a Low-mass Galaxy Environment: The Discovery of Tidal Tails around DDO 44
2019
Optical Follow-up of Gravitational-wave Events during the Second Advanced LIGO/VIRGO Observing Run with the DLT40 Survey
2019
Nebular Hensuremath{alpha} Limits for Fast Declining SNe Ia
2019
The Optical Afterglow of GW170817: An Off-axis Structured Jet and Deep Constraints on a Globular Cluster Origin
2019
The Faint End of the Centaurus A Satellite Luminosity Function
2019
Photometric and Spectroscopic Properties of Type Ia Supernova 2018oh with Early Excess Emission from the Kepler 2 Observations
2019
An Optically Targeted Search for Gravitational Waves emitted by Core-Collapse Supernovae during the First and Second Observing Runs of Advanced LIGO and Advanced Virgo
2019
Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae
2019
Signatures of Tidal Disruption in Ultra-faint Dwarf Galaxies: A Combined HST, Gaia, and MMT/Hectochelle Study of Leo V
2019
Nebular Spectroscopy of the \ldquoBlue Bump\rdquo Type Ia Supernova 2017cbv
2018
Continuum Reverberation Mapping of the Accretion Disks in Two Seyfert 1 Galaxies
2018
Target of Opportunity Observations of Gravitational Wave Events with LSST
2018
Bo\ otes III is a Disrupting Dwarf Galaxy Associated with the Styx Stellar Stream
2018
Near-infrared Spectral Evolution of the Type Ia Supernova 2014J in the Nebular Phase: Implications for the Progenitor System
2018
A nearby super-luminous supernova with a long pre-maximum \amp ``plateau'' and strong C II features
2018
Stability of the Broad-line Region Geometry and Dynamics in Arp 151 Over Seven Years
2018
SN 2016coi/ASASSN-16fp: an example of residual helium in a typeIc supernova?
2018
Evidence for Ultra-diffuse Galaxy \ldquoFormation\rdquo through Galaxy Interactions
2018
Red and Reddened: Ultraviolet through Near-Infrared Observations of Type Ia Supernova 2017erp
2018
Mapping the Tidal Destruction of the Hercules Dwarf: A Wide-field DECam Imaging Search for RR Lyrae Stars
2018
An Excess of Low-mass X-Ray Binaries in the Outer Halo of NGC 4472
2018
Chandra X-ray constraints on the candidate Ca-rich gap transient SN 2016hnk
2018
A Deeper Look at the New Milky Way Satellites: Sagittarius II, Reticulum II, Phoenix II, and Tucana III
2018
Science with an ngVLA: Compact binary mergers as traced by gravitational waves
2018
The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am
2018
Development of the Arizona Robotic Telescope Network
2018
Reverberation Mapping of Optical Emission Lines in Five Active Galaxies
2017
Constraints on the Progenitor of SN 2016gkg from Its Shock-cooling Light Curve
2017
Discovery of Diffuse Dwarf Galaxy Candidates around M101
2017
2FGL J0846.0+2820: A New Neutron Star Binary with a Giant Secondary and Variable {$gamma$-Ray Emission}
2017
Light and Color Curve Properties of Type Ia Supernovae: Theory Versus Observations
2017
A gravitational-wave standard siren measurement of the Hubble constant
2017
Multi-messenger Observations of a Binary Neutron Star Merger
2017
SN 2016coi/ASASSN-16fp: An example of residual helium in a type Ic supernova?
2017
Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light
2017
Rise and fall of the dust shell of the classical nova V339 Delphini
2017
Numerically Modeling the First Peak of the Type IIb SN 2016gkg
2017
A First Transients Survey with JWST: the FLARE project
2017
An Empirical Limit on the Kilonova Rate from the DLT40 One Day Cadence Supernova Survey
2017
Host galaxies and relativistic ejecta of compact binary mergers in the ngVLA era
2017
The Faint Globular Cluster in the Dwarf Galaxy Andromeda I
2017
Dynamical evidence for a strong tidal interaction between the Milky Way and its satellite, Leo V
2017
Early Blue Excess from the Type Ia Supernova 2017cbv and Implications for Its Progenitor
2017
Structural and Photometric Properties of the Andromeda Satellite Dwarf Galaxy Lacerta I from Deep Imaging with WIYN PODI
2017
The Progenitor and Early Evolution of the Type IIb SN 2016gkg
2017
Nebular-phase spectra of nearby Type Ia Supernovae
2017
Type Ia Supernovae: Colors, Rates, and Progenitors
2017
Deep Subaru Hyper Suprime-Cam Observations of Milky Way Satellites Columba I and Triangulum II
2017
Hubble Space Telescope Imaging of the Ultra-compact High Velocity Cloud AGC 226067: A Stripped Remnant in the Virgo Cluster
2017

The Discovery of the Electromagnetic Counterpart of GW170817: Kilonova AT 2017gfo/DLT17ck
2017

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$23.8K

$11.2K

$271.5K

$85.0K

$43.6K

$11.0K

$875.4K

$70.0K

$46.7K

$41.6K

News

Publications (139)