Spectral Properties of Quasars from Sloan Digital Sky Survey Data Release 14: The Catalog



: Suvendu Rakshit, C. S. Stalin, Jari Kotilainen

Publisher: IOP PUBLISHING LTD

: 2020

: Astrophysical Journal Supplement

: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES

: ASTROPHYS J SUPPL S

: ARTN 17

: 249

: 1

: 24

: 0067-0049

: 1538-4365

DOI: https://doi.org/10.3847/1538-4365/ab99c5

: https://arxiv.org/abs/1910.10395


We present measurements of the spectral properties for a total of 526,265 quasars, out of which 63% have a continuum signal-to-noise ratio > 3 pixel(-1), selected from the fourteenth data release of the Sloan Digital Sky Survey (SDSS-DR14) quasar catalog. We performed a careful and homogeneous analysis of the SDSS spectra of these sources to estimate the continuum and line properties of several emission lines such as H alpha, H beta, H gamma, Mgii, Ciii], Civ, and Ly alpha. From the derived emission line parameters, we estimated single-epoch virial black hole masses (M-BH) for the sample using H beta, Mgii, and Civemission lines. The sample covers a wide range in bolometric luminosity (



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