Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-21T11:13:38.160Z Has data issue: false hasContentIssue false

Radio observations of ultracompact HII regions

Published online by Cambridge University Press:  08 November 2005

Luis F. Rodríguez
Affiliation:
Centro de Radioastronomía y Astrofísica, UNAM, Apdo. Postal 3-72, Morelia, Michoacán 58089 México email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

I review recent developments in the field of radio observations of ultracompact H II (UCHII) regions that have appeared in the literature since the last major review (Churchwell 2002). The morphology of UCHII regions continues to be a topic of research and recent studies of individual regions of star formation suggest modifications with respect to the results obtained from galactic plane surveys. I also briefly touch upon the question of the density structure of UCHII regions. Finally, I will also discuss the evidence of time variability in UCHII regions, and present examples of objects that are expanding, varying in flux density, or moving in the sky.

Type
Contributed Papers
Copyright
© 2005 International Astronomical Union