Astronomy and Astrophysics – Astronomy
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.8101d&link_type=abstract
American Astronomical Society, 198th AAS Meeting, #81.01; Bulletin of the American Astronomical Society, Vol. 33, p.909
Astronomy and Astrophysics
Astronomy
Scientific paper
New infrared, millimeter, and radio observations from Keck, Palomar, ISO, OVRO, and the VLA of the low metallicity blue compact dwarf galaxy SBS 0335-052 are presented. This young star-forming system is compact ( ~80 pc) at 12.5 μ m, yet relatively extended in Brγ line emission. CO emission is not detected, though the galaxy shows an extremely high global HI gas to dust mass ratio, high even for blue compact dwarfs. The galaxy's far-infrared to radio and far-infrared to optical flux ratios match that for normal star-forming galaxies, yet its mid-infrared to optical/near-infrared luminosity is quite high. The combination of its mid-infrared surface brightness and dust column density imply an intense interstellar radiation field. Finally, the large Brγ equivalent width is indicative of a ~5 Myr starburst. These new lines of evidence will be used to discuss the merits of using SBS 0335-052 as a local analog to young galaxies at high redshift.
Condon James J.
Dale Daniel A.
Frayer Dave T.
Helou George
Neugebauer Gernot
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