Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...189.8002a&link_type=abstract
American Astronomical Society, 189th AAS Meeting, #80.02; Bulletin of the American Astronomical Society, Vol. 28, p.1381
Astronomy and Astrophysics
Astronomy
Scientific paper
A study of actively star forming galaxies in two nearby clusters, Abell 262 and Abell 2151 (Hercules) is presented. Both clusters have similar spiral fractions and modest x-ray luminosities, yet Abell 262 has a blue fraction of only 0.02, typical of most nearby clusters, while Abell 2151 has a blue fraction of 0.14, close to that of Butcher--Oemler clusters at red-shifts z >= 0.2. In an attempt to ascertain the reason for the difference between the two clusters, I have obtained B, R and Hα images using the 1.07 meter Hall telescope at the Lowell Observatory of a sample of galaxies selected by their FIR emission. The images, which trace the distribution of old stars (R), as well as recent (B-R) and present (Hα ) star formation are being used examine the distribution and intensity of star formation between galaxies in the two clusters as well as a sample of field galaxies.
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