X-ray and radio observations of the poor cluster A3581 which hosts the radio galaxy PKS 1404-267
Abstract
We present new X-ray and HI 21-cm data on the poor cluster of galaxies Abell 3581. The ASCA spectrum requires a low temperature, has a strong requirement for excess absorption and shows evidence for multi-temperature components. The ROSAT HRI image shows the strongly peaked emission indicative of a cooling flow. Despite the low temperature (~1.5-2.0 keV) and low luminosity (~2×1042ergs-1 in the 2-10keV band), Abell 3581 has a mass deposition rate ~80 Msolar yr-1 which is larger than found for other nearby low-luminosity objects. VLA observations in the 21-cm band set velocity width and spin temperature dependent limits on the column density of atomic hydrogen.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- August 1998
- DOI:
- 10.1046/j.1365-8711.1998.01675.x
- Bibcode:
- 1998MNRAS.298..854J
- Keywords:
-
- galaxies: clusters: individual: A3581;
- cooling flows;
- galaxies: individual: PKS 1404-267;
- radio lines: galaxies;
- X-rays: galaxies