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Massive pre-main-sequence stars in M17

Published online by Cambridge University Press:  28 July 2017

M. C. Ramírez-Tannus ,
L. Kaper ,
A. de Koter ,
F. Tramper ,
H. Sana ,
O. H. Ramírez-Agudelo Open the ORCID record for O. H. Ramírez-Agudelo [Opens in a new window] ,
A. Bik ,
L. E. Ellerbroek  and
B. B. Ochsendorf
M. C. Ramírez-Tannus
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
L. Kaper
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
A. de Koter
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
F. Tramper
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
H. Sana
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
O. H. Ramírez-Agudelo
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
A. Bik
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
L. E. Ellerbroek
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
B. B. Ochsendorf
Affiliation:
API, University of Amsterdam, The Netherlands; email: m.c.ramireztannus@uva.nl
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We obtained VLT/X-shooter spectra of twelve candidate young massive stars previously selected by Hanson et al. (1997) in the giant Hii region M17. An analysis of their spectra using FASTWIND models (Puls et al. 2005) shows that they span a mass range of 6 - 20 M⊙. We identify the presence of gaseous and dusty disks around six sources based on emission lines in the spectrum and infrared continuum excess.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S329: The Lives and Death-Throes of Massive Stars , November 2016 , pp. 439
Copyright
Copyright © International Astronomical Union 2017 

References

Hanson, M. M., Howarth, I. D., & Conti, P. S., 1997, ApJ, 489, 698 Google Scholar
Hosokawa, T. & Omukai, K., 2009, ApJ, 691, 823 Google Scholar
Puls, J., Urbaneja, M. A., Venero, R., et al. 2005, A&A, 435, 669 Google Scholar
Sana, H., de Mink, S. E., de Koter, A., et al. 2012, Science, 337, 444 Google Scholar
Sana, H., Ramirez-Tannus, M., de Koter, A., & Kaper, L., et al. 2017, ArXiv:1702.02153Google Scholar