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Hot molecular cores, sites of high mass star formation

Published online by Cambridge University Press:  25 May 2016

Susana Lizano  and
Mayra Osorio
Susana Lizano
Affiliation:
Instituto de Astronomía, UNAM, 04510 México D. F., México
Mayra Osorio
Affiliation:
Instituto de Astronomía, UNAM, 04510 México D. F., México

Abstract

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We model the flux-density distribution of hot molecular cores as in-falling envelopes of gas and dust onto a central massive star. The envelopes are heated by both the stellar luminosity and the accretion luminosity. We find that, in order to reproduce the observed fluxes, these objects require high mass accretion rates Ṁ ≃ 10−4−3 M⊙yr−1 infalling onto central late B-type stars. We discuss the implications of this intense accretion phase on the formation of massive stars.

Type
Part 5. Wolf-Rayet stars and other massive stars in starburst galaxies: the case of Wolf-Rayet galaxies (integrated spectra)
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 559 - 567
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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