Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21543633f&link_type=abstract
American Astronomical Society, AAS Meeting #215, #436.33; Bulletin of the American Astronomical Society, Vol. 42, p.389
Astronomy and Astrophysics
Astronomy
Scientific paper
Intracluster stars, stars outside of galaxies, have been shown to be common in galaxy clusters, and contain approximately 20% of the total stellar luminosity. However, the amount of intragroup light in galaxy groups is substantially less certain. Estimates of the intragroup luminosity fraction range from 0% to 46% of the total light. This is extremely unfortunate, since the majority of galaxies are in groups, and theoretical work shows that the group environment can have strong effects on the production of intracluster/intragroup light.
Here, we report on our efforts to determine the amount and spatial distribution of intragroup light in both normal and compact groups. We will present data from the 0.6m Burrell Schmidt and the KPNO 2.1m of four Hickson and three normal galaxy groups. Using the techniques of deep surface photometry, we can reach faint surface brightnesses of 26-27 magnitudes per square arcsecond. We will show tidal features found in these groups, and provide estimates of the total intragroup fraction. We acknowledge funding from the NSF for funding under Award No. 0807873 and funding from the Cottrell College Science Award ID7732
Downing S. W.
Feldmeier John . J.
Harding Paul
Mihos James Christopher
Morrison Heather L.
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