VizieR Online Data Catalog: X-ray & MIR AGNs in Stripe 82 with eBOSS spectra (LaMassa+, 2019)
Abstract
We reported on the results of an SDSS-IV eBOSS spectroscopic survey that covered 36.8deg2 of Stripe 82 in the fall of 2015. About half of this survey area (15.6deg2) overlaps the largest contiguous region of the Stripe 82 X-ray survey observed by XMM-Newton in AO13 (PI: Urry; LaMassa+ 2016, J/ApJ/817/172). The primary targets of this survey were X-ray sources and WISE AGN candidates from the ALLWISE survey (Mainzer+ 2011ApJ...731...53M) identified on the basis of their W1-W2 colors (i.e., the 75% reliability threshold of Assef+ 2013, J/ApJ/772/26). SDSS counterparts to the X-ray and WISE sources were identified using the statistical maximum likelihood approach, as described in LaMassa+ (2016, , J/ApJ/817/172) for the X-ray sources and in the main text for the WISE population. Additional "filler" targets were observed to make use of all available spectroscopic fibers across the SDSS plates. Subsequent to the SDSS-IV eBOSS observing program, an updated multiwavelength catalog matched to the Stripe 82X survey was published by Ananna+ (2017, J/ApJ/850/66), and the W1-W2 color criteria for AGNs were modified with respect to the eBOSS target list we created (Assef+ 2018, J/ApJS/234/23), leading us to curate the sources in our final published catalog with respect to the objects we targeted.
In total, 2262 SDSS counterparts to the original X-ray and WISE AGN candidate target lists were spectroscopically observed. We visually inspected all spectra. (1 data file).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- October 2020
- DOI:
- 10.26093/cds/vizier.18760050
- Bibcode:
- 2020yCat..18760050L
- Keywords:
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- Active gal. nuclei;
- Surveys;
- Spectra: optical;
- Redshifts;
- Photometry: SDSS;
- Photometry: infrared;
- X-ray sources