The 31 Deg2 Release of the Stripe 82 X-Ray Survey: The Point Source Catalog

Journal
THE ASTROPHYSICAL JOURNAL
Date Issued
2016
Author(s)
LaMassa, Stephanie M.
•
Urry, C. Megan
•
CAPPELLUTI, Nico
•
Böhringer, Hans
•
•
Glikman, Eilat
•
Richards, Gordon
•
Ananna, Tonima
•
Brusa, Marcella
•
Cardamone, Carie
•
Chon, Gayoung
•
Civano, Francesca
•
Farrah, Duncan
•
Gilfanov, Marat
•
Green, Paul
•
Komossa, S.
•
Lira, Paulina
•
Makler, Martin
•
•
Pecoraro, Robert
•
Ranalli, Piero
•
Salvato, Mara
•
Schawinski, Kevin
•
Stern, Daniel
•
Treister, Ezequiel
•
Viero, Marco
DOI
10.3847/0004-637X/817/2/172
Abstract
We release the next installment of the Stripe 82 X-ray survey point-source catalog, which currently covers 31.3 deg2 of the Sloan Digital Sky Survey (SDSS) Stripe 82 Legacy field. In total, 6181 unique X-ray sources are significantly detected with XMM-Newton (>5σ) and Chandra (>4.5σ). This catalog release includes data from XMM-Newton cycle AO 13, which approximately doubled the Stripe 82X survey area. The flux limits of the Stripe 82X survey are 8.7 × 10-16 erg s-1 cm-2, 4.7 × 10-15 erg s-1 cm-2, and 2.1 × 10-15 erg s-1 cm-2 in the soft (0.5-2 keV), hard (2-10 keV), and full bands (0.5-10 keV), respectively, with approximate half-area survey flux limits of 5.4 × 10-15 erg s-1 cm-2, 2.9 × 10-14 erg s-1 cm-2, and 1.7 × 10-14 erg s-1 cm-2. We matched the X-ray source lists to available multi-wavelength catalogs, including updated matches to the previous release of the Stripe 82X survey; 88% of the sample is matched to a multi-wavelength counterpart. Due to the wide area of Stripe 82X and rich ancillary multi-wavelength data, including coadded SDSS photometry, mid-infrared WISE coverage, near-infrared coverage from UKIDSS and VISTA Hemisphere Survey, ultraviolet coverage from GALEX, radio coverage from FIRST, and far-infrared coverage from Herschel, as well as existing ∼30% optical spectroscopic completeness, we are beginning to uncover rare objects, such as obscured high-luminosity active galactic nuclei at high-redshift. The Stripe 82X point source catalog is a valuable data set for constraining how this population grows and evolves, as well as for studying how they interact with the galaxies in which they live.
Volume
817
Issue
2
Start page
172
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