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UCHII Regions and Newly Born O-type Stars

Published online by Cambridge University Press:  01 December 2007

Peter S. Conti
Affiliation:
JILA, University of Colorado, Boulder CO 80309-0440 e-mail: pconti@jila.colorado.edu
Jeonghee Rho
Affiliation:
Spitzer Science Center, CalTech, Pasadena CA 91125 email: rho@ipac.caltech.edu
James Furness
Affiliation:
Department of Physics and Astronomy, University of Sheffield, S3 7RH, UK email: J.Furness@sheffield.ac.uk, Paul.Crowther@sheffield.ac.uk
Paul A. Crowther
Affiliation:
Department of Physics and Astronomy, University of Sheffield, S3 7RH, UK email: J.Furness@sheffield.ac.uk, Paul.Crowther@sheffield.ac.uk
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Abstract

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We have obtained Spitzer IRAC and MIPS mid-IR images of a sample of 43 radio selected UCHII region sources to ascertain (a) whether the newly born O stars within are found with other stars in their birthplaces and (b) the nature of the surroundings. 37 of the sources appear to be in small clusters, and 33 are found in connection with other hot star formation activity. Thus, for the most part, O stars are not born in isolation. Here we give examples of the mid-IR images of the various types of UCHII regions.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

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