Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998mnras.298..854j&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Volume 298, Issue 3, pp. 854-860.
Astronomy and Astrophysics
Astronomy
15
Galaxies: Clusters: Individual: A3581, Cooling Flows, Galaxies: Individual: Pks 1404-267, Radio Lines: Galaxies, X-Rays: Galaxies
Scientific paper
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.
Fabian Andrea C.
Johnstone R. M.
Taylor Greg B.
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