Infrared-selected ``Warm'' Galaxies Observed in X-Rays
Abstract
Infrared, optical, and X-ray observations are presented for a sample of "warm" infrared selected galaxies listed in the IRAS Point Source Catalog. These galaxies have also been observed serendipitously in X-rays by the Einstein Observatory. From low-resolution optical spectra, we find that all have emission lines, indicating a Seyfert or H II region type nucleus. Many of these galaxies were previously uncataloged. Based on the X-ray detection rate of our small sample, we conclude that large numbers of warm IRAS Seyfert 1-1.9 galaxies may be detectable in X-rays by future surveys such as ROSAT.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1989
- DOI:
- 10.1086/167279
- Bibcode:
- 1989ApJ...339...93G
- Keywords:
-
- Active Galactic Nuclei;
- H Ii Regions;
- Quasars;
- Seyfert Galaxies;
- X Rays;
- Astronomical Catalogs;
- Emission Spectra;
- Heao 2;
- Infrared Astronomy Satellite;
- Luminosity;
- Visible Spectrum;
- Astrophysics;
- GALAXIES: SEYFERT;
- INFRARED: SOURCES;
- X-RAYS: SOURCES