Mathematics – Logic
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21942710s&link_type=abstract
American Astronomical Society, AAS Meeting #219, #427.10
Mathematics
Logic
Scientific paper
A representative sample of 89 nearby (D<17.3 Mpc) blue compact dwarf galaxies (BCDGs) was selected for a study of their surrounding environments. The BCDGs were categorized into five groups based on galaxy morphology. Our study shows these BCDGs as having nearly completely random properties in terms of absolute magnitude, redshift, and surrounding environment. The only environmental correlation found was of BCDGs within the Virgo cluster as being single nucleated with a diffuse elliptical halo, characterized as morphological class nE. Given the uniformity of properties in such different circumstances, we hypothesize that a variety of physical processes may lead to the BCDG phenomenon. Obvious interactions involving dwarfs, however, are clearly a factor in a minority of BCDGs, and we therefore explore whether interactions could have a wider role than previously recognized. By comparing interacting galaxies with seemingly isolated BCDGs, we investigate the possibility that interactions with dark matter halos could be a factor in producing the more isolated and apparently non-interacting BCDGs.
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