The Chandra survey of Carina OB stars

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

doi:10.1017/S1743921311011537

Astronomy & Astrophysics

Research output: Chapter in Book/Report/Conference proceeding › Conference 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/L_bol ≈ -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 language	English (US)
Title of host publication	Active OB stars
Subtitle of host publication	structure, evolution, mass loss, and critical limits
Publisher	Cambridge University Press
Pages	608-609
Number of pages	2
Edition	S272
ISBN (Print)	9780521198400
DOIs	https://doi.org/10.1017/S1743921311011537
State	Published - Jul 2010

Publication series

Name	Proceedings of the International Astronomical Union
Number	S272
Volume	6
ISSN (Print)	1743-9213
ISSN (Electronic)	1743-9221

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1017/S1743921311011537

Cite this

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. (2010). 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

@inproceedings{a97fa60bdd994353a545a1acb67d641b,

title = "The Chandra survey of Carina OB stars",

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.",

author = "Marc Gagn{\'e} and Garrett Fehon and Savoy, \{Michael R.\} and Cohen, \{David H.\} and Townsley, \{Leisa K.\} and Broos, \{Patrick S.\} and Povich, \{Matthew S.\} and Corcoran, \{Michael F.\} and Walborn, \{Nolan R.\} and Moffat, \{Anthony F.J.\} and Yael Naz{\'e} and Oskinova, \{Lidia M.\}",

year = "2010",

month = jul,

doi = "10.1017/S1743921311011537",

language = "English (US)",

isbn = "9780521198400",

series = "Proceedings of the International Astronomical Union",

publisher = "Cambridge University Press",

number = "S272",

pages = "608--609",

booktitle = "Active OB stars",

address = "United Kingdom",

edition = "S272",

}

Gagné, M, Fehon, G, Savoy, MR, Cohen, DH, Townsley, LK, Broos, PS, Povich, MS, Corcoran, MF, Walborn, NR, Moffat, AFJ, Nazé, Y & Oskinova, LM 2010, The Chandra survey of Carina OB stars. in Active OB stars: structure, evolution, mass loss, and critical limits. S272 edn, Proceedings of the International Astronomical Union, no. S272, vol. 6, Cambridge University Press, pp. 608-609. https://doi.org/10.1017/S1743921311011537

The Chandra survey of Carina OB stars. / Gagné, Marc; Fehon, Garrett; Savoy, Michael R. et al.
Active OB stars: structure, evolution, mass loss, and critical limits. S272. ed. Cambridge University Press, 2010. p. 608-609 (Proceedings of the International Astronomical Union; Vol. 6, No. S272).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - The Chandra survey of Carina OB stars

AU - Gagné, Marc

AU - Fehon, Garrett

AU - Savoy, Michael R.

AU - Cohen, David H.

AU - Townsley, Leisa K.

AU - Broos, Patrick S.

AU - Povich, Matthew S.

AU - Corcoran, Michael F.

AU - Walborn, Nolan R.

AU - Moffat, Anthony F.J.

AU - Nazé, Yael

AU - Oskinova, Lidia M.

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AB - 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.

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