7.7k citations · 9.6k across the 33 of their papers we have counts for
33 papers
Accelerated Computation of a High Dimensional Kolmogorov-Smirnov Distance
Alex Hagen, Shane Jackson, James Kahn +4
Statistical testing is widespread and critical for a variety of scientific disciplines. The advent of machine learning and the increase of computing power has increased the interes…
Scaling the training of particle classification on simulated MicroBooNE events to multiple GPUs
Alex Hagen, Eric Church, Jan Strube +2
Measurements in Liquid Argon Time Projection Chamber (LArTPC) neutrino detectors, such as the MicroBooNE detector at Fermilab, feature large, high fidelity event images. Deep learn…
Galaxies of the Universe. I. Grism-Selected Rest-Frame Optical Emission Line Galaxies
William P. Bowman, Gregory R. Zeimann, Robin Ciardullo +6
Euclid, WFIRST, and HETDEX will make emission-line selected galaxies the largest observed constituent in the universe. However, we only have a limited understanding of the…
The Astropy Project: Building an inclusive, open-science project and status of the v2.0 core package
The Astropy Collaboration, A. M. Price-Whelan, B. M. Sipőcz +134
The Astropy project supports and fosters the development of open-source and openly-developed Python packages that provide commonly-needed functionality to the astronomical communit…
SDSS-IV MANGA: Spatially Resolved Star Formation Main Sequence and LI(N)ER Sequence
B. C. Hsieh, Lihwai Lin, J. H. Lin +17
We present our study on the spatially resolved H_alpha and M_star relation for 536 star-forming and 424 quiescent galaxies taken from the MaNGA survey. We show that the star format…
The Lyman Alpha Reference Sample. VIII. Characterizing Lyman-Alpha Scattering in Nearby Galaxies
Joanna S. Bridge, Matthew Hayes, Jens Melinder +13
We examine the dust geometry and Lyα scattering in the galaxies of the Lyman Alpha Reference Sample (LARS), a set of 14 nearby (0.02 < < 0.2) Lyα emitting and starbursting syst…
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
Bela Abolfathi, D. S. Aguado, Gabriela Aguilar +344
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since July 2014. This paper describes the second data release from this phase, and the fourtee…
SDSS IV MaNGA: Discovery of an blob associated with a dry galaxy pair -- ejected gas or a `dark' galaxy candidate?
Lihwai Lin, Jing-Hua Lin, Chin-Hao Hsu +31
We report the discovery of a mysterious giant blob that is kpc away from the main MaNGA target 1-24145, one component of a dry galaxy merger, identified in the first…
Swift Ultraviolet Survey of the Magellanic Clouds (SUMaC). I. Shape of the Ultraviolet Dust Extinction Law and Recent Star Formation History of the Small Magellanic Cloud
Lea M. Z. Hagen, Michael H. Siegel, Erik A. Hoversten +3
We present the first results from the Swift Ultraviolet Survey of the Magellanic Clouds (SUMaC), the highest resolution ultraviolet (UV) survey of the Magellanic Clouds yet complet…
The Astropy Problem
Demitri Muna, Michael Alexander, Alice Allen +151
The Astropy Project (http://astropy.org) is, in its own words, "a community effort to develop a single core package for Astronomy in Python and foster interoperability between Pyth…
The Rest-Frame Optical Morphology of Emission Line Galaxies at 2 < z < 3: Evidence for Inside-Out Formation in Low-Mass Galaxies
Alex Hagen, Nicholas A. Bond, Robin Ciardullo +6
We compare the rest-frame ultraviolet and rest-frame optical morphologies of 2 < z < 3 star-forming galaxies in the GOODS-S field using Hubble Space Telescope WFC3 and ACS images f…
On the Classification of UGC1382 as a Giant Low Surface Brightness Galaxy
Lea M. Z. Hagen, Mark Seibert, Alex Hagen +6
We provide evidence that UGC1382, long believed to be a passive elliptical galaxy, is actually a giant low surface brightness (GLSB) galaxy which rivals the archetypical GLSB Malin…
Is the cluster environment quenching the Seyfert activity in elliptical and spiral galaxies?
R. S. de Souza, M. L. L. Dantas, A. Krone-Martins +7
We developed a hierarchical Bayesian model (HBM) to investigate how the presence of Seyfert activity relates to their environment, herein represented by the galaxy cluster mass, $M…
HST Emission Line Galaxies at z ~ 2: Comparing Physical Properties of Lyman Alpha and Optical Emission Line Selected Galaxies
Alex Hagen, Gregory R. Zeimann, Christoph Behrens +14
We compare the physical and morphological properties of z ~ 2 Lyman-alpha emitting galaxies (LAEs) identified in the HETDEX Pilot Survey and narrow band studies with those of z ~ 2…
Young, Star-forming Galaxies and their local Counterparts: the Evolving Relationship of Mass-SFR-Metallicity since z ~ 2.1
Henry S. Grasshorn Gebhardt, Gregory R. Zeimann, Robin Ciardullo +5
We explore the evolution of the Stellar Mass-Star Formation Rate-Metallicity Relation using a set of 256 COSMOS and GOODS galaxies in the redshift range 1.90 < z < 2.35. We present…
The Dust Attenuation Curve versus Stellar Mass for Emission Line Galaxies at z ~ 2
Gregory R. Zeimann, Robin Ciardullo, Caryl Gronwall +8
We derive the mean wavelength dependence of stellar attenuation in a sample of 239 high redshift (1.90 < z < 2.35) galaxies selected via Hubble Space Telescope (HST) WFC3 IR grism…
Bayesian Redshift Classification of Emission-line Galaxies with Photometric Equivalent Widths
Andrew S. Leung, Viviana Acquaviva, Eric Gawiser +13
We present a Bayesian approach to the redshift classification of emission-line galaxies when only a single emission line is detected spectroscopically. We consider the case of surv…
Surveying Galaxy Proto-clusters in Emission: A Large-scale Structure at z=2.44 and the Outlook for HETDEX
Yi-Kuan Chiang, Roderik A. Overzier, Karl Gebhardt +12
Galaxy proto-clusters at z >~ 2 provide a direct probe of the rapid mass assembly and galaxy growth of present day massive clusters. Because of the need of precise galaxy redshifts…
The Evolution of the Far-UV Luminosity Function and Star Formation Rate Density of the Chandra Deep Field South from z=0.2-1.2 with Swift/UVOT
Lea M. Z. Hagen, Erik A. Hoversten, Caryl Gronwall +4
We use deep Swift UV/Optical Telescope (UVOT) near-ultraviolet (1600A to 4000A) imaging of the Chandra Deep Field South to measure the rest-frame far-UV (FUV; 1500A) luminosity fun…
Learning from FITS: Limitations in use in modern astronomical research
Brian Thomas, Tim Jenness, Frossie Economou +35
The Flexible Image Transport System (FITS) standard has been a great boon to astronomy, allowing observatories, scientists and the public to exchange astronomical information easil…
The Biases of Optical Line-Ratio Selection for Active Galactic Nuclei, and the Intrinsic Relationship between Black Hole Accretion and Galaxy Star Formation
Jonathan R. Trump, Mouyuan Sun, Gregory R. Zeimann +10
We use 317,000 emission-line galaxies from the Sloan Digital Sky Survey to investigate line-ratio selection of active galactic nuclei (AGNs). In particular, we demonstrate that "st…
Physical and Morphological Properties of [O II] Emitting Galaxies in the HETDEX Pilot Survey
Joanna S. Bridge, Caryl Gronwall, Robin Ciardullo +8
The Hobby-Eberly Dark Energy Experiment pilot survey identified 284 [O II] 3727 emitting galaxies in a 169 square-arcminute field of sky in the redshift range 0 < z < 0.57. This li…
HST Emission Line Galaxies at z ~ 2: The Mystery of Neon
Gregory Zeimann, Robin Ciardullo, Henry Gebhardt +6
We use near-IR grism spectroscopy from the Hubble Space Telescope to examine the strength of [Ne~III] 3869 relative to H-beta, [O~II] 3727 and [O~III] 5007 in 236 low mass (7.5 < l…
HST Emission Line Galaxies at z ~ 2: The Ly-alpha Escape Fraction
Robin Ciardullo, Gregory Zeimann, Caryl Gronwall +8
We compare the H-beta line strengths of 1.90 < z < 2.35 star-forming galaxies observed with the near-IR grism of the Hubble Space Telescope with ground-based measurements of Ly-alp…