The Half Million Quasars (HMQ) Catalogue
A quasar catalogue is presented with a total of 510764 objects including 424748 type 1 QSOs and 26623 type 1 AGN complete from the literature to 25 January 2015. Also included are 25015 high-confidence SDSS-based photometric quasars with radio/X-ray associations, 1595 BL Lac objects, and 32783 type...
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| description | A quasar catalogue is presented with a total of 510764 objects including 424748 type 1 QSOs and 26623 type 1 AGN complete from the literature to 25 January 2015. Also included are 25015 high-confidence SDSS-based photometric quasars with radio/X-ray associations, 1595 BL Lac objects, and 32783 type 2 objects. Each object is displayed with arcsecond-accurate astrometry, red and blue photometry, redshift, citations, and radio and X-ray associations where present. Also, 114 new spectroscopically confirmed quasars are presented. |
| doi_str_mv | 10.48550/arxiv.1502.06303 |
| format | Article |
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| subjects | Astrometry BL Lacertae objects Photometry Physics - Astrophysics of Galaxies Physics - Cosmology and Nongalactic Astrophysics Quasars Red shift |
| title | The Half Million Quasars (HMQ) Catalogue |
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