The Chandra survey of Carina OB stars

Marc Gagné, Garrett Fehon, Michael R. Savoy, David H. Cohen, Leisa K. Townsley, Patrick Sean Broos, Matthew S. Povich, Michael F. Corcoran, Nolan R. Walborn, Anthony F.J. Moffat, Yael Nazé, Lidia M. Oskinova

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have combined 22 deep Chandra ACIS-I pointings to map over one square degree of the Carina complex. Our x-ray survey detects 69 of 70 known O-type stars and 61 of 130 known early B stars. The majority of single O stars display soft X-ray spectra and have a mean log LX/Lbol ≈ -7.5 suggesting shocks embedded in the O-star winds. Over OB stars show unusually high X-ray luminosities, high shock temperatures or time variability, not predicted for embedded wind shocks.

Original languageEnglish (US)
Title of host publicationActive OB stars
Subtitle of host publicationstructure, evolution, mass loss, and critical limits
PublisherCambridge University Press
Pages608-609
Number of pages2
EditionS272
ISBN (Print)9780521198400
DOIs
StatePublished - Jul 12 2011

Publication series

NameProceedings of the International Astronomical Union
NumberS272
Volume6
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

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    Gagné, M., Fehon, G., Savoy, M. R., Cohen, D. H., Townsley, L. K., Broos, P. S., Povich, M. S., Corcoran, M. F., Walborn, N. R., Moffat, A. F. J., Nazé, Y., & Oskinova, L. M. (2011). The Chandra survey of Carina OB stars. In Active OB stars: structure, evolution, mass loss, and critical limits (S272 ed., pp. 608-609). (Proceedings of the International Astronomical Union; Vol. 6, No. S272). Cambridge University Press. https://doi.org/10.1017/S1743921311011537