Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21944125v&link_type=abstract
American Astronomical Society, AAS Meeting #219, #441.25
Astronomy and Astrophysics
Astronomy
Scientific paper
As part of a larger investigation into the environmental effects on low- and intermediate-luminosity galaxies, we have conducted a comprehensive analysis of the dwarf galaxies in the Chandra X-Ray Observatory archives. The low luminosities of dwarf galaxies make them difficult objects to observe, therefore the sample galaxies are primarily limited to the Local group. Because of their relatively low mass, dwarf galaxies are more prone to be affected by environmental influences. Thus, an analysis of the X-ray features and properties of dwarf galaxies may provide valuable insight into galaxy evolution.
The diffuse X-ray gas halos and the X-ray point sources associated with the dwarf galaxies were analyzed. While many dwarf galaxies have neutral gas reservoirs and low levels of star formation, the sample dwarf galaxies typically contain less than eight X-ray point sources. The dwarf galaxies have small diffuse gas halos confined to the optical extent of each object. Future research will examine whether dwarf galaxies are scaled-down versions of large, luminous galaxies and whether the down scaling of features is the reason for the lack of diffuse gas and the relatively small number of point sources.
Fuse Chris
Verboncoeur Mitch R.
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