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arXiv · 1904.10780

SDSS-IV/SPIDERS: A Catalogue of X-Ray Selected AGN Properties; Spectral Properties and Black Hole Mass Estimates for SPIDERS SDSS DR14 Type 1 AGN

Damien Coffey·Mara Salvato·Andrea Merloni·Thomas Boller·Kirpal Nandra·Tom Dwelly·Johan Comparat·Andreas Schulze·Agnese Del Moro·Donald P. Schneider
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Abstract

This work presents the catalogue of optical spectral properties for all X-ray selected SPIDERS active galactic nuclei (AGN) up to SDSS DR14. SPIDERS (SPectroscopic IDentification of eROSITA Sources) is an SDSS-IV programme that is currently conducting optical spectroscopy of the counterparts to the X-ray selected sources detected in the ROSAT all-sky survey and the XMM-Newton slew survey in the footprint of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS). The SPIDERS DR14 sample is the largest sample of X-ray selected AGN with optical spectroscopic follow-up to date. The catalogue presented here is based on a clean sample of 7344 2RXS ($\rm \bar{z}$ = 0.5) and 1157 XMM-Newton slew survey ($\rm \bar{z}$ = 0.4) type 1 AGN with spectroscopic coverage of the H$\rm \beta$ and/or MgII emission lines. Visual inspection results for each object in this sample are available from a combination of literature sources and the SPIDERS group, which provide both reliable redshifts and source classifications. The spectral regions around the H$\rm \beta$ and MgII emission lines have been fit in order to measure both line and continuum properties, estimate bolometric luminosities, and provide black hole mass estimates using the single-epoch (or photoionisation) method. The use of both H$\rm \beta$ and MgII allows black hole masses to be estimated up to z $\rm \simeq$ 2.5. A comparison is made between the spectral properties and black hole mass estimates derived from H$\rm \beta$ and MgII using the subsample of objects which have coverage of both lines in their spectrum. These results have been made publicly available as an SDSS-IV DR14 value added catalogue.

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Damien Coffey, Mara Salvato, Andrea Merloni, Thomas Boller, Kirpal Nandra, Tom Dwelly, Johan Comparat, Andreas Schulze, Agnese Del Moro, Donald P. Schneider. 2019-04-24. SDSS-IV/SPIDERS: A Catalogue of X-Ray Selected AGN Properties; Spectral Properties and Black Hole Mass Estimates for SPIDERS SDSS DR14 Type 1 AGN. https://doi.org/10.1051/0004-6361%2F201833996

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