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Stellar content of obscured compact H II regions

Published online by Cambridge University Press:  26 May 2016

Margaret M. Hanson ,
Lex Kaper ,
Arjan Bik ,
Fernando Comerón ,
Joachim Puls ,
Alexander Jokuthy  and
Rolf-Peter Kudritzki
Margaret M. Hanson
Affiliation:
Department of Physics, University of Cincinnati, Cincinnati, OH 45221-0011, USA
Lex Kaper
Affiliation:
Sterrenkundig Instituut Anton Pannekoek, Universiteit van Amsterdam, Kruislaan 403, NL-1098 SJ Amsterdam, Nederland
Arjan Bik
Affiliation:
Sterrenkundig Instituut Anton Pannekoek, Universiteit van Amsterdam, Kruislaan 403, NL-1098 SJ Amsterdam, Nederland
Fernando Comerón
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Straße 2, Garching-bei-München, D-85748, BRD
Joachim Puls
Affiliation:
Universitätssternwarte, Ludwich-Maximilians-Universität, Scheinerstraße 1, D-81679 München, BRD
Alexander Jokuthy
Affiliation:
Universitätssternwarte, Ludwich-Maximilians-Universität, Scheinerstraße 1, D-81679 München, BRD
Rolf-Peter Kudritzki
Affiliation:
Institute for Astronomy, University of Hawaii at Manoa, 2680 Woodlawn Drive, Honolulu, HI 96822, USA

Abstract

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Near-infrared, spectroscopic studies of central ionizing sources of very young H ii regions is presented in conjunction with a recently available, sophisticated atmospheric code to constrain the physical conditions and environment of very massive stars at very early stages of evolution. Combining high quality near-infrared spectroscopy of very young massive stars with model atmosphere calculations should allow for the most accurate quantitative determination of Teff, rotation, L, and log g, and to search for binaries and possible disk or in-fall signatures in forming or recently formed massive stars. These characteristics make up a vital boundary condition constraining theories on massive star formation.

Type
Part 3. Location and Distribution of Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 467 - 473
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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