Optical, near-infrared and hard X-ray observations of SAXJ1353.9+1820: a red quasar
Abstract
We present the results of a follow-up ASCA observation and multicolour optical and near-infrared photometry carried out at the 3.5-m Italian National Telescope Galileo of SAXJ1353.9+1820. This object, serendipitously discovered by BeppoSAX in the 5-10keV band, has been spectroscopically identified as a red quasar at z=0.217. The combined X-ray and optical-infrared data reveal the presence of a moderately luminous X-ray source (~1044ergs-1) obscured by a column density of the order of 1022cm-2 in an otherwise optically passive early-type galaxy. The implications for the nature of red quasars and their possible contribution to the hard X-ray background are briefly outlined.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- May 2000
- DOI:
- 10.1046/j.1365-8711.2000.03508.x
- arXiv:
- arXiv:astro-ph/0002279
- Bibcode:
- 2000MNRAS.314L..11V
- Keywords:
-
- GALAXIES: ACTIVE;
- QUASARS: INDIVIDUAL: SAXJ1353.9+1820;
- X-RAYS: GALAXIES;
- Astrophysics
- E-Print:
- 5 pages, LateX, 4 figures (included), mn-1.4.sty and psfig.sty macros. Accepted by MNRAS