Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21725830g&link_type=abstract
American Astronomical Society, AAS Meeting #217, #258.30; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
Blue compact dwarf galaxies are analogs to the unevolved galaxies in the early universe, for which the correlation between star formation rate (SFR) and X-ray luminosity are largely unknown. We have selected five blue compact dwarf galaxies (BCD's) with metallicities <0.07 solar and distances less than 15 Mpc. X-ray luminosities are derived from Chandra data, while SFR data was found in the literature. An established correlation exists between the SFR and X-ray luminosity of galaxies with similar metallicities to the Milky Way. Our data suggest that, for a given X-ray luminosity, the correlation indicates an SFR that is 7 to 15 times greater than the SFR found through infrared and Hα calibrations for our metal deficient BCD's. We also fit all sources with an X-ray luminosity function that fits well above a certain luminosity, but below which overestimates the number of sources.
Gorski Mark
Kaaret Phil
Schmitt Jerome
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