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Gas and hidden star formation in NGC 5253

Published online by Cambridge University Press:  25 May 2016

Jean L. Turner ,
Sara C. Beck  and
Paul T.P. Ho
Jean L. Turner
Affiliation:
Division of Astronomy & Astrophysics, UCLA, Los Angeles, CA, USA
Sara C. Beck
Affiliation:
Astronomy Department, Tel Aviv University, Ramat Aviv, Israel
Paul T.P. Ho
Affiliation:
Harvard-Smithonian Center for Astrophysics, Cambridge, MA, USA

Abstract

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We confirm the presence of compact H II regions in the center of the starburst in NGC 5253 through the detection of optically thick free-free emission. The number of O-type stars implied by the excitation of these nebulae is nearly two orders of magnitude larger than what is indicated by the radio continuum fluxes. The compact H II regions are located 70 pc to the north of the location of the Wolf-Rayet feature. Implied extinctions are extremely high. Not all WR galaxies can be identified as such due to extinction.

Type
Part 6. Starbursts in normal and active galaxies: their effects on the ISM and on chemical evolution
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 758 - 759
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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