Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996apj...468...86m&link_type=abstract
Astrophysical Journal v.468, p.86
Astronomy and Astrophysics
Astronomy
4
Galaxies: Cooling Flows, Galaxies: Clusters: Individual Name: Abell 262, Galaxies: Clusters: Individual Alphanumeric: A496, Galaxies: Intergalactic Medium, Line: Identification, X-Rays: Galaxies
Scientific paper
The galaxy clusters A496 and A262 were observed by the Broad Band X- Ray Telescope (BBXRT) during the Astro-1 mission. A496 was observed for 2282 s; A262 Was observed for 5547 s. Observations ranged from 2' to 13' off-axis. BBXRT had ~160 eV resolution at 6 keV and moderate spatial resolution. The A496 data reveal the cooling flow present in this cluster but are consistent with a constant abundance and column density. An unresolved iron line is present at 6.46 keV with an equivalent width of 600 eV; this line is consistent with Fe XXV. The A262 data are of limited value. The spectra are consistent with no cooling gradient, no abundance gradient, and no column density gradient across the cluster. We also assign an upper limit of 1 keV to the presence of an iron line.
MacKenzie Meredith
Mushotzky Richard
Schlegel Eric M.
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