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Searching for Green Pea Galaxies in the SFACT Survey
Kristin N. Baker, John J. Salzer, Brooke Kimsey-Miller +5
Green Pea galaxies (GPs) are a class of rare, extreme star-forming galaxies whose physical properties closely resemble high-redshift Ly-α emitting galaxies. Their high equivalent w…
H-alpha Star Formation Rates of the SHIELD Dwarf Galaxies
Madeline Shepley, David G. Gormanous, John J. Salzer +9
The Survey of HI in Extremely Low-mass Dwarfs (SHIELD) galaxy sample is an HI-selected catalog of galaxies that occupy the extreme low-mass end of the HI mass function. Our team is…
UV Star-Formation Rates of the SHIELD Dwarf Galaxies
David G. Gormanous, Anjali S. Dziarski, John J. Salzer +11
The Survey of HI in Extremely Low-mass Dwarfs (SHIELD) is a multi-wavelength observational project targeting gas-rich, star-forming dwarf galaxies at the faint end of the HI mass f…
Citizen Science Identification of Isolated Blue Stellar Systems in the Virgo cluster
Swapnaneel Dey, Michael G. Jones, David J. Sand +4
We present a catalog of 34 new candidate (13 high confidence) isolated, young stellar systems within the Virgo galaxy cluster identified through a citizen science search of public…
xGASS: The scatter of the HI-halo mass relation of central galaxies
Manasvee Saraf, Luca Cortese, O. Ivy Wong +3
Empirical studies of the relationship between baryonic matter in galaxies and the gravitational potential of their host halos are important to constrain our theoretical framework f…
Dark no more: The low luminosity stellar counterpart of a dark cloud in the Virgo cluster
Michael G. Jones, Steven Janowiecki, Swapnaneel Dey +9
We have discovered the stellar counterpart to the ALFALFA Virgo 7 cloud complex, which has been thought to be optically dark and nearly star-free since its discovery in 2007. This…
VLT-MUSE spectroscopy of AGNs misclassified by BPT diagnostic or with weak emission lines
Christopher J. Agostino, Samir Salim, Médéric Boquien +3
Despite powerful X-ray emission, some AGNs are known to either lack optical emission lines (so-called 'optically dull' AGNs) or have lines that fall on the star-forming branch of t…
Exploring the Structures and Substructures of the Andromeda Satellite Dwarf Galaxies Cassiopeia III, Perseus I, and Lacerta I
Katherine L. Rhode, Nicholas J. Smith, Denija Crnojevic +8
We present results from wide-field imaging of the resolved stellar populations of the dwarf spheroidal galaxies Cassiopeia III (And XXXII) and Perseus I (And XXXIII), two satellite…
A Search for Gas-Rich Dwarf Galaxies in the Local Universe with ALFALFA and the WIYN One Degree Imager
Katherine L. Rhode, Nicholas J. Smith, William F. Janesh +5
We present results from an optical search for Local Group dwarf galaxy candidates associated with the Ultra-Compact High Velocity Clouds (UCHVCs) discovered by the ALFALFA neutral…
Catching Tidal Dwarf Galaxies at a Later Evolutionary Stage with ALFALFA
Laurin M. Gray, Katherine L. Rhode, Lukas Leisman +11
We present deep optical imaging and photometry of four objects classified as "Almost-Dark" galaxies in the ALFALFA survey because of their gas-rich nature and extremely faint or mi…
HETDEX Public Source Catalog 1: 220K Sources Including Over 50K Lyman Alpha Emitters from an Untargeted Wide-area Spectroscopic Survey
Erin Mentuch Cooper, Karl Gebhardt, Dustin Davis +43
We present the first publicly released catalog of sources obtained from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). HETDEX is an integral field spectroscopic survey…
Searches for Extremely Metal Poor Galaxies using ALFALFA-selected Dwarf Galaxies
John H. Miller, John J. Salzer, Steven Janowiecki +2
We present a study of nearby dwarf galaxies selected from the ALFALFA blind HI survey. A primary goal of the project was to utilize a non-standard selection method with the hope of…
SAMI-HI: The HI view of the H Tully-Fisher relation and data release
Barbara Catinella, Luca Cortese, Alfred L. Tiley +15
We present SAMI-HI, a survey of the atomic hydrogen content of 296 galaxies with integral field spectroscopy available from the SAMI Galaxy Survey. The sample spans nearly 4 dex in…
Gas-rich, field ultra-diffuse galaxies host few globular clusters
Michael G. Jones, Ananthan Karunakaran, Paul Bennet +7
We present Hubble Space Telescope imaging of 14 gas-rich, low surface brightness galaxies in the field at distances of 25-36 Mpc, with mean effective radii and -band central sur…
Hα Dots: Direct-Method Metal Abundances of Low-Luminosity Star-Forming Systems
Alec S. Hirschauer, John J. Salzer, Nathalie Haurberg +2
Utilizing low-luminosity star-forming systems discovered in the H Dots survey, we present spectroscopic observations undertaken using the KPNO 4m telescope for twenty-six source…
The ALFALFA Almost-Dark Galaxy AGC~229101: A Two Billion Solar Mass HI Cloud with a Very Low Surface Brightness Optical Counterpart
Lukas Leisman, Katherine L. Rhode, Catherine Ball +11
We present results from deep HI and optical imaging of AGC 229101, an unusual HI source detected at v = 7116 km/s in the ALFALFA survey. Initially classified as a can…
HETDEX [OIII] Emitters I: A spectroscopically selected low-redshift population of low-mass, low-metallicity galaxies
Briana Indahl, Greg Zeimann, Gary J. Hill +16
We assemble a sample of 17 low metallicity (7.45 < log(O/H)+12 < 8.12) galaxies with z < 0.1 found spectroscopically, without photometric pre-selection, in early data from the Hobb…
The HETDEX Survey: The Ly Escape Fraction from 3D-HST Emission Line Galaxies at
Laurel H. Weiss, William P. Bowman, Robin Ciardullo +13
We measure the Ly escape fraction of 935 [OIII]-emitting galaxies between by comparing stacked spectra from the Hubble Space Telescope/WFC3's near-IR grism to c…
The H Dots Survey. II. A Second List of Faint Emission-Line Objects
John J. Salzer, Jesse R. Feddersen, Kathryn Derloshon +6
We present the second catalog of serendipitously discovered compact extragalactic emission-line sources -- H Dots. These objects have been discovered in searches of moderately d…
Properties of the KISS Green Pea Galaxies
Samantha W. Brunker, John J. Salzer, Steven Janowiecki +2
Green Peas are a class of extreme star-forming galaxies at intermediate redshifts, originally discovered via color-selection using multi-filter, wide-field survey imaging data (Car…
xGASS: Cold gas content and quenching in galaxies below the star forming main sequence
Steven Janowiecki, Barbara Catinella, Luca Cortese +2
We use HI and H2 global gas measurements of galaxies from xGASS and xCOLD GASS to investigate quenching paths of galaxies below the star formation main sequence (SFMS). We show tha…
Off the baryonic Tully-Fisher relation: a population of baryon-dominated ultra-diffuse galaxies
Pavel E. Mancera Piña, Filippo Fraternali, Elizabeth A. K. Adams +17
We study the gas kinematics traced by the 21-cm emission of a sample of six HIrich low surface brightness galaxies classified as ultra-diffuse galaxies (UDGs). Using the 3D kine…
Five Gas-rich Ultra-faint Dwarf Galaxy Candidates Discovered in WIYN Imaging of ALFALFA Sources
William Janesh, Katherine L. Rhode, John J. Salzer +5
We present results from the analysis of WIYN pODI imaging of 23 ultra-compact high-velocity clouds (UCHVCs), which were identified in the ALFALFA HI survey as possible dwarf galaxi…
The environment of HI-bearing ultra diffuse galaxies in the ALFALFA survey
Steven Janowiecki, Michael G. Jones, Lukas Leisman +1
We explore the environment of 252 HI-bearing Ultra Diffuse Galaxies (HUDs) from the 100% ALFALFA survey catalog in an attempt to constrain their formation mechanism. We select sour…