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Weak Gravitational Lensing around Low Surface Brightness Galaxies in the DES Year 3 Data
N. Chicoine, J. Prat, G. Zacharegkas +102
We present galaxy-galaxy lensing measurements using a sample of low surface brightness galaxies (LSBGs) drawn from the Dark Energy Survey Year 3 (Y3) data as lenses. LSBGs are diff…
Stellar Metallicities from DECam -band Photometry: A Study of Milky Way Ultra-Faint Dwarf Galaxies
Yue Pan, Anirudh Chiti, Alex Drlica-Wagner +5
We conducted an in-depth analysis of candidate member stars located in the peripheries of three ultra-faint dwarf (UFD) galaxy satellites of the Milky Way: Boötes I (Boo1), Boötes…
Dark Energy Survey Year 6 Results: Intra-Cluster Light from Redshift 0.2 to 0.5
Yuanyuan Zhang, Jesse B. Golden-Marx, Ricardo L. C. Ogando +46
Using the full six years of imaging data from the Dark Energy Survey, we study the surface brightness profiles of galaxy cluster central galaxies and intra-cluster light. We apply…
OzDES Reverberation Mapping Program: H lags from the 6-year survey
Umang Malik, Rob Sharp, A. Penton +64
Reverberation mapping measurements have been used to constrain the relationship between the size of the broad-line region and luminosity of active galactic nuclei (AGN). This …
Characterising the Intracluster Light over the Redshift Range in the DES-ACT Overlap
Jesse B. Golden-Marx, Y. Zhang, R. L. C. Ogando +66
We characterise the properties and evolution of Bright Central Galaxies (BCGs) and the surrounding intracluster light (ICL) in galaxy clusters identified in overlapping regions of…
The Evolution of AGN Activity in Brightest Cluster Galaxies
T. Somboonpanyakul, M. McDonald, A. Noble +73
We present the results of an analysis of Wide-field Infrared Survey Explorer (WISE) observations on the full 2500 deg^2 South Pole Telescope (SPT)-SZ cluster sample. We describe a…
Eridanus IV: an Ultra-Faint Dwarf Galaxy Candidate Discovered in the DECam Local Volume Exploration Survey
W. Cerny, A. B. Pace, A. Drlica-Wagner +29
We present the discovery of a candidate ultra-faint Milky Way satellite, Eridanus IV (DELVE J05050931), detected in photometric data from the DECam Local Volume Exploration surv…
RR Lyrae stars in the newly discovered ultra-faint dwarf galaxy Centaurus I
C. E. Martínez-Vázquez, W. Cerny, A. K. Vivas +22
We report the detection of three RR Lyrae (RRL) stars (two RRc and one RRab) in the ultra-faint dwarf (UFD) galaxy Centaurus I (CenI) and two Milky Way (MW) Scuti/SX Phoenicis…
The DECam Local Volume Exploration Survey: Overview and First Data Release
A. Drlica-Wagner, J. L. Carlin, D. L. Nidever +67
The DECam Local Volume Exploration survey (DELVE) is a 126-night survey program on the 4-m Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. DELVE seeks to…
OzDES Reverberation Mapping Program: The first Mg II lags from five years of monitoring
Zhefu Yu, Paul Martini, A. Penton +63
Reverberation mapping is a robust method to measure the masses of supermassive black holes (SMBHs) outside of the local Universe. Measurements of the radius -- luminosity () r…
Shadows in the Dark: Low-Surface-Brightness Galaxies Discovered in the Dark Energy Survey
D. Tanoglidis, A. Drlica-Wagner, K. Wei +67
We present a catalog of 23,790 extended low-surface-brightness galaxies (LSBGs) identified in from the first three years of imaging data from the Dark Energy Survey…
The Host Galaxies of Rapidly Evolving Transients in the Dark Energy Survey
P. Wiseman, M. Pursiainen, M. Childress +72
Rapidly evolving transients (RETs), also termed fast blue optical transients (FBOTs), are a distinct class of astrophysical event. They are characterised by lightcurves that declin…
Is diffuse intracluster light a good tracer of the galaxy cluster matter distribution?
H. Sampaio-Santos, Y. Zhang, R. L. C. Ogando +64
We explore the relation between diffuse intracluster light (central galaxy included) and the galaxy cluster (baryonic and dark) matter distribution using a sample of 528 clusters a…
STRIDES: Spectroscopic and photometric characterization of the environment and effects of mass along the line of sight to the gravitational lenses DES J0408-5354 and WGD 2038-4008
E. J. Buckley-Geer, H. Lin, C. Rusu +65
In time-delay cosmography, three of the key ingredients are 1) determining the velocity dispersion of the lensing galaxy, 2) identifying galaxies and groups along the line of sight…
The impact of spectroscopic incompleteness in direct calibration of redshift distributions for weak lensing surveys
W. G. Hartley, C. Chang, S. Samani +74
Obtaining accurate distributions of galaxy redshifts is a critical aspect of weak lensing cosmology experiments. One of the methods used to estimate and validate redshift distribut…
The Curious Case of PHL 293B: A Long-Lived Transient in a Metal-Poor Blue Compact Dwarf Galaxy
Colin J. Burke, Vivienne F. Baldassare, Xin Liu +51
We report on small-amplitude optical variability and recent dissipation of the unusually persistent broad emission lines in the blue compact dwarf galaxy PHL 293B. The galaxy's unu…
Supernova Host Galaxies in the Dark Energy Survey: I. Deep Coadds, Photometry, and Stellar Masses
P. Wiseman, M. Smith, M. Childress +75
The five-year Dark Energy Survey supernova programme (DES-SN) is one of the largest and deepest transient surveys to date in terms of volume and number of supernovae. Identifying a…
Detailed Abundances in the Ultra-faint Magellanic Satellites Carina II and III
Alexander P. Ji, Ting S. Li, Joshua D. Simon +15
We present the first detailed elemental abundances in the ultra-faint Magellanic satellite galaxies Carina II (Car II) and Carina III (Car III). With high-resolution Magellan/MIKE…
Two Ultra-Faint Milky Way Stellar Systems Discovered in Early Data from the DECam Local Volume Exploration Survey
S. Mau, W. Cerny, A. B. Pace +56
We report the discovery of two ultra-faint stellar systems found in early data from the DECam Local Volume Exploration survey (DELVE). The first system, Centaurus I (DELVE J1238-40…
The Southern Stellar Stream Spectroscopic Survey (): Overview, Target Selection, Data Reduction, Validation, and Early Science
T. S. Li, S. E. Koposov, D. B. Zucker +29
We introduce the Southern Stellar Stream Spectroscopy Survey (), an on-going program to map the kinematics and chemistry of stellar streams in the Southern Hemisphere. The i…
Resolved Molecular Gas and Star Formation Properties of the Strongly Lensed z=2.26 Galaxy SDSS J0901+1814
Chelsea E. Sharon, Amitpal S. Tagore, Andrew J. Baker +8
We present ~1" resolution (~2 kpc in the source plane) observations of the CO(1-0), CO(3-2), Halpha, and [N II] lines in the strongly-lensed z=2.26 star-forming galaxy SDSS J0901+1…
Rediscovery of the Sixth Star Cluster in the Fornax Dwarf Spheroidal Galaxy
Mei-Yu Wang, Sergey Koposov, Alex Drlica-Wagner +58
Since first noticed by Shapley in 1939, a faint object coincident with the Fornax dwarf spheroidal has long been discussed as a possible sixth globular cluster system. However, deb…
A faint halo star cluster discovered in the Blanco Imaging of the Southern Sky Survey
S. Mau, A. Drlica-Wagner, K. Bechtol +13
We present the discovery of a faint, resolved stellar system, BLISS J0321+0438 (BLISS 1), found in Dark Energy Camera data from the first observing run of the Blanco Imaging of the…
The morphology and structure of stellar populations in the Fornax dwarf spheroidal galaxy from Dark Energy Survey Data
Mei-Yu Wang, T. de Boer, A. Pieres +55
Using deep wide-field photometry three-year data (Y3) from the Dark Energy Survey (DES), we present a panoramic study of the Fornax dwarf spheroidal galaxy. The data presented here…