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Identifications and Photometric Redshifts of the 2 Ms Chandra Deep Field-South Sources
Lehmer, B. D.; Alexander, D. M.; Silverman, J. D. +11 more
We present reliable multiwavelength identifications and high-quality photometric redshifts for the 462 X-ray sources in the ≈2 Ms Chandra Deep Field-South (CDF-S) survey. Source identifications are carried out using deep optical-to-radio multiwavelength catalogs, and are then combined to create lists of primary and secondary counterparts for the X…
The Extended Chandra Deep Field-South Survey: Optical Spectroscopy of Faint X-ray Sources with the VLT and Keck
Finoguenov, A.; Lehmer, B. D.; Alexander, D. M. +26 more
We present the results of a program to acquire high-quality optical spectra of X-ray sources detected in the Extended-Chandra Deep Field-South (E-CDF-S) and its central 2 Ms area. New spectroscopic redshifts, up to z = 4, are measured for 283 counterparts to Chandra sources with deep exposures (t ~ 2-9 hr per pointing) using multi-slit facilities …
The VLA-COSMOS Perspective on the Infrared-Radio Relation. I. New Constraints on Selection Biases and the Non-Evolution of the Infrared/Radio Properties of Star-Forming and Active Galactic Nucleus Galaxies at Intermediate and High Redshift
Aussel, H.; Le Floc'h, E.; Sanders, D. B. +18 more
VLA 1.4 GHz (σ~ 0.012 mJy) and MIPS 24 and 70 µm (σ~ 0.02 and 1.7 mJy, respectively) observations covering the 2 deg2 COSMOS field are combined with an extensive multiwavelength data set to study the evolution of the infrared (IR)-radio relation at intermediate and high redshift. With ~4500 sources—of which ~30% have spectroscopic…
Ultradeep KS Imaging in the GOODS-N
Wang, Wei-Hao; Cowie, Lennox L.; Barger, Amy J. +2 more
We present an ultradeep KS -band image that covers 0.5 × 0.5 deg2 centered on the Great Observatories Origins Deep Survey-North (GOODS-N). The image reaches a 5σ depth of K_{S,AB}=24.45 in the GOODS-N region, which is as deep as the GOODS-N Spitzer Infrared Array Camera (IRAC) 3.6 µm image. We present a new method of co…
StarCAT: A Catalog of Space Telescope Imaging Spectrograph Ultraviolet Echelle Spectra of Stars
Ayres, Thomas R.
StarCAT is a catalog of high resolution ultraviolet spectra of objects classified as "stars," recorded by Space Telescope Imaging Spectrograph (STIS) during its initial seven years of operations (1997-2004). StarCAT is based on 3184 echelle observations of 545 distinct targets, with a total exposure duration of 5.2 Ms. For many of the objects, bro…
Local Luminous Infrared Galaxies. I. Spatially Resolved Observations with the Spitzer Infrared Spectrograph
Pérez-González, Pablo G.; Colina, Luis; Rieke, George H. +5 more
We present results from the Spitzer Infrared Spectrograph spectral mapping observations of 15 local luminous infrared galaxies (LIRGs). In this paper, we investigate the spatial variations of the mid-IR emission which includes fine structure lines, molecular hydrogen lines, polycyclic aromatic features (PAHs), continuum emission, and the 9.7 &micr…
The Chandra M101 Megasecond: Diffuse Emission
Kuntz, K. D.; Snowden, S. L.
Because M101 is nearly face-on, it provides an excellent laboratory in which to study the distribution of X-ray-emitting gas in a typical late-type spiral galaxy. We obtained a Chandra observation with a cumulative exposure of roughly 1 Ms to study the diffuse X-ray emission in M101. The bulk of the X-ray emission is correlated with the star forma…
White Dwarf-Red Dwarf Systems Resolved with the Hubble Space Telescope. II. Full Snapshot Survey Results
Hoard, D. W.; Farihi, J.; Wachter, S.
Results are presented for a Hubble Space Telescope Advanced Camera for Surveys high-resolution imaging campaign of 90 white dwarfs with known or suspected low-mass stellar and substellar companions. Of the 72 targets that remain candidate and confirmed white dwarfs with near-infrared excess, 43 are spatially resolved into two or more components, a…
The HST/ACS Coma Cluster Survey. II. Data Description and Source Catalogs
Ferguson, Henry C.; Mobasher, Bahram; Miller, Bryan W. +46 more
The Coma cluster, Abell 1656, was the target of an HST-ACS Treasury program designed for deep imaging in the F475W and F814W passbands. Although our survey was interrupted by the ACS instrument failure in early 2007, the partially completed survey still covers ~50% of the core high-density region in Coma. Observations were performed for 25 fields …
Deep GALEX Observations of the Coma Cluster: Source Catalog and Galaxy Counts
Hornschemeier, A. E.; Smith, R.; Arnouts, S. +5 more
We present a source catalog from a deep 26 ks Galaxy Evolution Explorer (GALEX) observation of the Coma cluster in the far-UV (FUV; 1530 Å) and near-UV (NUV; 2310 Å) wavebands. The observed field is centered ~0fdg9 (1.6 Mpc) southwest of the Coma core in a well-studied region of the cluster known as "Coma-3." The entire field is located within the…