501 citations · 1.7k across the 23 of their papers we have counts for
23 papers
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…
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…
No need for dark matter: resolved kinematics of the ultra-diffuse galaxy AGC 114905
Pavel E. Mancera Piña, Filippo Fraternali, Tom Oosterloo +3
We present new HI interferometric observations of the gas-rich ultra-diffuse galaxy AGC 114905, which previous work, based on low-resolution data, identified as an outlier of the b…
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…
The Intrinsic Shapes of Low Surface Brightness Galaxies: a Discriminant of LSBG Formation Mechanisms
Erin Kado-Fong, Mihai Petrescu, Majid Mohammad +8
We use the low surface brightness galaxy (LSBG) samples created from the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP, 781 galaxies), the Dark Energy Survey (DES, 20977 gala…
VLA Imaging of HI-bearing Ultra-Diffuse Galaxies from the ALFALFA Survey
Lexi Gault, Lukas Leisman, Elizabeth A. K. Adams +12
Ultra-diffuse galaxies have generated significant interest due to their large optical extents and low optical surface brightnesses, which challenge galaxy formation models. Here we…
Robust HI kinematics of gas-rich ultra-diffuse galaxies: hints of a weak-feedback formation scenario
Pavel E. Mancera Piña, Filippo Fraternali, Kyle A. Oman +15
We study the gas kinematics of a sample of six isolated gas-rich low surface brightness galaxies, of the class called ultra-diffuse galaxies (UDGs). These galaxies have recently be…
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…
Integrating Undergraduate Research and Faculty Development in a Legacy Astronomy Research Project
Rebecca A. Koopmann, Thomas J. Balonek, John M. Cannon +14
The NSF-sponsored Undergraduate ALFALFA Team (UAT) promotes long-term collaborative research opportunities for faculty and students from 23 U.S. public and private primarily underg…
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…
The Enigmatic (Almost) Dark Galaxy Coma P: Distance Measurement and Stellar Populations from HST Imaging
Samantha W. Brunker, Kristen B. W. McQuinn, John J. Salzer +9
We present Hubble Space Telescope (HST) observations of the low surface brightness (SB) galaxy Coma P. This system was first discovered in the Arecibo Legacy Fast ALFA HI survey an…
The Arecibo Pisces-Perseus Supercluster Survey I: Harvesting ALFALFA
Aileen A. O'Donoghue, Martha P. Haynes, Rebecca A. Koopmann +9
We report a multi-objective campaign of targeted 21 cm HI line observations of sources selected from the Arecibo Legacy Fast ALFA (Arecibo L-band Feed Array) survey (ALFALFA) and g…
The Arecibo Legacy Fast ALFA Survey: The ALFALFA Extragalactic HI Source Catalog
Martha P. Haynes, Riccardo Giovanelli, Brian R. Kent +22
We present the catalog of ~31500 extragalactic HI line sources detected by the completed ALFALFA survey out to z < 0.06 including both high signal-to-noise ratio (> 6.5) detections…
The contribution of HI-bearing ultra-diffuse galaxies to the cosmic number density of galaxies
Michael G. Jones, Emmanouil Papastergis, Viraj Pandya +5
We estimate the cosmic number density of the recently identified class of HI-bearing ultra-diffuse sources (HUDs) based on the completeness limits of the ALFALFA survey. These obje…
The Enigmatic (Almost) Dark Galaxy Coma P: The Atomic Interstellar Medium
Catherine Ball, John M. Cannon, Lukas Leisman +12
We present new high-resolution HI spectral line imaging of Coma P, the brightest HI source in the system HI 123220. This extremely low surface brightness galaxy was first identi…
Illuminating Low-Surface-Brightness Galaxies with the Hyper Suprime-Cam Survey
Johnny P. Greco, Jenny E. Greene, Michael A. Strauss +11
We present a catalog of extended low-surface-brightness galaxies (LSBGs) identified in the Wide layer of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP). Using the first $…
HI in Virgo's "Red and Dead" Dwarf Ellipticals - A Tidal Tail and Central Star Formation
Gregory Hallenbeck, Rebecca Koopmann, Riccardo Giovanelli +4
We investigate a sample of 3 dwarf elliptical galaxies in the Virgo Cluster which have significant reservoirs of HI. We present deep optical imaging (from CFHT and KPNO), HI spectr…
(Almost) Dark Galaxies in the ALFALFA Survey: Isolated HI Bearing Ultra Diffuse Galaxies
Lukas Leisman, Martha P. Haynes, Steven Janowiecki +9
We present a sample of 115 very low optical surface brightness, highly extended, HI-rich galaxies carefully selected from the ALFALFA survey that have similar optical absolute magn…
HI in Group Interactions: HCG 44
Kelley M. Hess, M. E. Cluver, Sahba Yahya +5
Extending deep observations of the neutral atomic hydrogen (HI) to the environment around galaxy groups can reveal a complex history of group interactions which is invisible to stu…
ALFALFA and WSRT Imaging of Extended HI Features in the Leo Cloud of Galaxies
Lukas Leisman, Martha P. Haynes, Riccardo Giovanelli +3
We present ALFALFA HI observations of a well studied region of the Leo Cloud, which includes the NGC 3227 group and the NGC 3190 group. We detect optically dark HI tails and plumes…
(Almost) Dark HI Sources in the ALFALFA Survey: The Intriguing Case of HI1232+20
Steven Janowiecki, Lukas Leisman, Gyula Jozsa +7
We report the discovery and follow-up observations of a system of three objects identified by the ALFALFA extragalactic HI survey, cataloged as (almost) dark extragalactic sources,…
The ALFALFA "Almost Darks" Campaign: Pilot VLA HI Observations of Five High Mass-to-Light Ratio Systems
John M. Cannon, Charlotte P. Martinkus, Lukas Leisman +13
We present VLA HI spectral line imaging of 5 sources discovered by ALFALFA. These targets are drawn from a larger sample of systems that were not uniquely identified with optical c…
Brightest Cluster Galaxies and Core Gas Density in REXCESS Clusters
D. B. Haarsma, L. Leisman, M. Donahue +7
We investigate the relationship between brightest cluster galaxies (BCGs) and their host clusters using a sample of nearby galaxy clusters from the Representative XMM Cluster Struc…