Signatures of the Youngest Starbursts: Optically-thick Thermal Bremsstrahlung Radio Sources in Henize 2-10

Details Signatures of the Youngest Starbursts: Optically-thick Thermal Bremsstrahlung Radio Sources in Henize 2-10 Signatures of the Youngest Starbursts: Optically-thick Thermal Bremsstrahlung Radio Sources in Henize 2-10

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.0811k&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #08.11; Bulletin of the American Astronomical Society, Vol. 31, p.1382

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Very Large Array (VLA) radio continuum imaging reveals compact (<8 pc) 1 mJy radio sources in the central 5'' starburst region of the blue compact galaxy Henize 2-10. While the global radio continuum spectrum is a power law (Sν ν α ) indicative of nonthermal processes (α = -0.5), the radio sources have positive (α >0.0) spectral indicies suggesting an optically thick thermal bremsstrahlung origin. We model the luminosities and spectral energy distributions of these radio knots, finding that they are consistent with unusually dense H II regions having electron densities, 1500 cm-3

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