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HETDEX [OII] galaxies at : Volume-limited samples and their power spectra
Jeongin Moon, Eiichiro Komatsu, Robin Ciardullo +15
The catalog from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX) Public Data Release 1 (PDR1) contains half a million emission-line-selected [OII] galaxies spread across…
Golden and Silver Dark Sirens for precise H0 measurement with HETDEX
Yixuan Dang, Ish Gupta, Robin Ciardullo +12
Gravitational waves (GWs) from compact binary coalescences are standard sirens that provide a direct measure of the source's luminosity distance, enabling an independent measuremen…
Lyα Intensity Mapping in HETDEX: Galaxy-Lyα Intensity Cross-Power Spectrum
Maja Lujan Niemeyer, Eiichiro Komatsu, José Luis Bernal +18
We present a measurement of the Lyman- (Ly) intensity mapping power spectrum from the Hobby-Eberly Telescope Dark Energy Experiment (HETDEX). We measure the cross-power spect…
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…
Constraining the Lyman Alpha Escape Fraction with Far-Infrared Observations of Lyman Alpha Emitters
Julie L. Wardlow, S. Malhotra, Z. Zheng +22
We study the far-infrared properties of 498 Lyman Alpha Emitters (LAEs) at z=2.8, 3.1 and 4.5 in the Extended Chandra Deep Field-South, using 250, 350 and 500 micron data from the…
Locating Star-Forming Regions in Quasar Host Galaxies
J. E. Young, M. Eracleous, O. Shemmer +5
We present a study of the morphology and intensity of star formation in the host galaxies of eight Palomar-Green quasars using observations with the Hubble Space Telescope. Our obs…
To Stack or Not to Stack: Spectral Energy Distribution Properties of Lya-Emitting Galaxies at z=2.1
Carlos J. Vargas, Hannah Bish, Viviana Acquaviva +13
We use the Cosmic Assembly Near-Infrared Deep Extragalactic Legacy Survey (CANDELS) GOODS-S multi-wavelength catalog to identify counterparts for 20 Lya Emitting (LAE) galaxies at…
The Spectrally Resolved Lyman-alpha Emission of Three Lyman-alpha Selected Field Galaxies at z~2.4 from the HETDEX Pilot Survey
Taylor S. Chonis, Guillermo A. Blanc, Gary J. Hill +11
We present new results on the spectrally resolved Lyman-alpha (LyA) emission of three LyA emitting field galaxies at z~2.4 with high LyA equivalent width (>100 Angstroms) and LyA l…
Galaxy redshift surveys with sparse sampling
Chi-Ting Chiang, Philipp Wullstein, Donghui Jeong +16
Survey observations of the three-dimensional locations of galaxies are a powerful approach to measure the distribution of matter in the universe, which can be used to learn about t…
UVUDF: Ultraviolet Imaging of the Hubble Ultradeep Field with Wide-field Camera 3
Harry I. Teplitz, Marc Rafelski, Peter Kurczynski +23
We present an overview of a 90-orbit Hubble Space Telescope treasury program to obtain near ultraviolet imaging of the Hubble Ultra Deep Field using the Wide Field Camera 3 UVIS de…
The HETDEX Pilot Survey. IV. The Evolution of [O II] Emitting Galaxies from z ~ 0.5 to z ~ 0
Robin Ciardullo, Caryl Gronwall, Joshua J. Adams +10
We present an analysis of the luminosities and equivalent widths of the 284 z < 0.56 [O II]-emitting galaxies found in the 169 square arcmin pilot survey for the Hobby-Eberly Teles…
Under Pressure: Star Clusters and the Neutral Hydrogen Medium of Tidal Tails
B. Mullan, A. A. Kepley, A. Maybhate +9
Using archival data from ATCA, WSRT, and the VLA, we have analyzed the HI emission of 22 tidal tail regions of the Mullan et al. sample of pairwise interacting galaxies. We have me…
A Lyman Break Galaxy in the Epoch of Reionization from HST Grism Spectroscopy
James E. Rhoads, Sangeeta Malhotra, Daniel Stern +27
We present observations of a luminous galaxy at redshift z=6.573 --- the end of the reioinization epoch --- which has been spectroscopically confirmed twice. The first spectroscopi…
Searching for Neutral Hydrogen Halos around z ~ 2.1 and z ~ 3.1 Ly-alpha Emitting Galaxies
John Feldmeier, Alex Hagen, Robin Ciardullo +9
We search for evidence of diffuse Ly-alpha emission from extended neutral hydrogen surrounding Ly-alpha emitting galaxies (LAEs) using deep narrow-band images of the Extended Chand…
Intragroup and Galaxy-Linked Diffuse X-ray Emission in Hickson Compact Groups
Tyler D. Desjardins, Sarah C. Gallagher, Panayiotis Tzanavaris +9
Isolated compact groups of galaxies (CGs) present a range of dynamical states, group velocity dispersions, and galaxy morphologies with which to study galaxy evolution, particularl…
Escape of Lyman-alpha and continuum photons from star-forming galaxies
Hidenobu Yajima, Yuexing Li, Qirong Zhu +3
A large number of high-redshift galaxies have been discovered via their narrow-band Lya line or broad-band continuum colors in recent years. The nature of the escaping process of p…
A Quasar Catalog with Simultaneous UV, Optical and X-ray Observations by Swift
Jian Wu, Daniel Vanden Berk, Dirk Grupe +6
We have compiled a catalog of optically-selected quasars with simultaneous observations in UV/optical and X-ray bands by the Swift Gamma Ray Burst Explorer. Objects in this catalog…
Stacked Rest-Frame UV Spectra of Ly-Emitting and Continuum-Selected Galaxies at 2<z<3.5
Michael Berry, Eric Gawiser, Lucia Guaita +6
We present properties of individual and composite rest-UV spectra of continuum- and narrowband-selected star-forming galaxies (SFGs) at a redshift of 2<z<3.5 discovered by the MUSY…
Were progenitors of local L* galaxies Lyman-alpha emitters at high redshift?
Hidenobu Yajima, Yuexing Li, Qirong Zhu +3
The Lya emission has been observed from galaxies over a redshift span z ~ 0 - 8.6. However, the evolution of high-redshift Lya emitters (LAEs), and the link between these populatio…
The merger history, AGN and dwarf galaxies of Hickson Compact Group 59
I. S. Konstantopoulos, S. C. Gallagher, K. Fedotov +16
Compact group galaxies often appear unaffected by their unusually dense environment. Closer examination can, however, reveal the subtle, cumulative effects of multiple galaxy inter…
A Swift Look at SN 2011fe: The Earliest Ultraviolet Observations of a Type Ia Supernova
Peter J. Brown, Kyle S. Dawson, Massimiliano de Pasquale +8
We present the earliest ultraviolet (UV) observations of the bright Type Ia supernova SN 2011fe/PTF11kly in the nearby galaxy M101 at a distance of only 6.4 Mpc. It was discovered…
The Evolution of Ly-alpha Emitting Galaxies Between z = 2.1 and z = 3.1
Robin Ciardullo, Caryl Gronwall, Christopher Wolf +11
We describe the results of a new, wide-field survey for z=3.1 Ly-alpha emission-line galaxies (LAEs) in the Extended Chandra Deep Field South (ECDF-S). By using a nearly top-hat 50…
A Search for Lyman Break Galaxies in the CDF-S Using Swift UVOT
Antara R. Basu-Zych, Ann E. Hornschemeier, Erik A. Hoversten +2
(Abridged) While the Swift satellite is primarily designed to study gamma-ray bursts, its ultraviolet and optical imaging and spectroscopy capabilities are also being used for a va…
X-ray Constraints on the Lyman-Alpha Escape Fraction
Zhen-Ya Zheng, Sangeeta Malhotra, Jun-Xian Wang +7
We have coadded X-ray flux of all known Lyman Alpha Emitters (LAEs) in the 4 Msec Chandra Deep Field South (CDF-S) region, to place sensitive upper limits on the average unobscured…