Publications (10)
Lyman alpha Luminosity Functions at Redshift z = 4.5
Zhen-Ya Zheng, Steven L. Finkelstein, Keely Finkelstein +7
We present a spectroscopically confirmed sample of Lyman alpha emitting galaxies (LAEs) at z ~ 4.5 in the Extended Chandra Deep Field South (ECDFS), which we combine with a sample…
A Comprehensive Radio and Optical Study of Abell 2256: Activity from an Infalling Group
Neal Miller, Frazer Owen, John Hill
Abell 2256 is a nearby (z~0.06), rich cluster of galaxies with fascinating observed properties across a range of wavelengths. Long believed to represent a cluster merger, recent X-…
The fast UV variability of the active galactic nucleus in Fairall 9
Anne Lohfink, Christopher Reynolds, Ranjan Vasudevan +2
We present results from a new optical/UV/X-ray monitoring campaign of the luminous Seyfert galaxy Fairall 9 using the Swift satellite. Using the UV-Optical Telescope (UVOT) on Swif…
Spectral State Transitions of the Ultraluminous X-ray Source IC 342 X-1
Hannah Marlowe, Philip Kaaret, Cornelia Lang +6
We observed the Ultraluminous X-ray Source IC 342 X-1 simultaneously in X-ray and radio with Chandra and the JVLA to investigate previously reported unresolved radio emission coinc…
The X-ray Star Formation Story as Told by Lyman Break Galaxies in the 4 Ms CDF-S
Antara R. Basu-Zych, Bret D. Lehmer, Ann E. Hornschemeier +12
We present results from deep X-ray stacking of >4000 high redshift galaxies from z~1 to 8 using the 4 Ms Chandra Deep Field South (CDF-S) data, the deepest X-ray survey of the extr…
Abell 2255: Increased Star Formation and AGN Activity in a Cluster-Cluster Merger
Neal Miller, Frazer Owen
Deep VLA 1.4 GHz radio continuum imaging of Abell 2255 is presented. This cluster is among the better nearby candidates for rich cluster-cluster merger systems, with evidence inclu…
Radio Properties of the BAT AGN: the FIR-Radio Relation, the Fundamental Plane, and the Main Sequence of Star Formation
Krista Lynne Smith, Richard F. Mushotzky, Stuart Vogel +2
We have conducted 22 GHz 1" JVLA imaging of 70 radio-quiet AGN from the Swift-BAT survey. We find radio cores in all but three objects. The radio morphologies of the sample fall in…
Deep GALEX Observations of the Coma Cluster: Source Catalog and Galaxy Counts
Derek Hammer, Ann Hornschemeier, Bahram Mobasher +5
We present a source catalog from deep 26 ks GALEX observations of the Coma cluster in the far-UV (FUV; 1530 A) and near-UV (NUV; 2310 A) wavebands. The observed field is centered 0…
Chandra Discovery of a Binary Active Galactic Nucleus in Mrk 739
Michael Koss, Richard Mushotzky, Ezequiel Treister +6
We have discovered a binary AGN in the galaxy Mrk 739 using Chandra and Swift BAT. We find two luminous L_2-10 keV=1.1*10^43 and 1.0*10^42 erg/s, unresolved nuclei with a projected…
Pre-processing of Galaxies in the Early Stages of Cluster Formation in Abell 1882 at =0.139
Aparajita Sengupta, William C. Keel, Glenn Morrison +3
A rare opportunity to distinguish internal and environmental effects on galaxy evolution is afforded by "Supergroups", systems which are rich and massive but include several compar…