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dc.contributor.author
Rauw, G.
dc.contributor.author
Naze, Y.
dc.contributor.author
Wright, N. J.
dc.contributor.author
Drake, J. J.
dc.contributor.author
Guarcello, M.G.
dc.contributor.author
Prinja, R. K.
dc.contributor.author
Peck, L. W.
dc.contributor.author
Albacete Colombo, Juan Facundo
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dc.contributor.author
Herrero, A.
dc.contributor.author
Kobulnicky, H. A.
dc.contributor.author
Sciortino, S.
dc.date.available
2022-12-05T16:17:02Z
dc.date.issued
2015-11
dc.identifier.citation
Rauw, G.; Naze, Y.; Wright, N. J.; Drake, J. J.; Guarcello, M.G.; et al.; X-Ray Emission from Massive Stars in Cyg OB2; IOP Publishing; Astrophysical Journal Supplement Series; 221; 1; 11-2015; 1-20
dc.identifier.issn
0067-0049
dc.identifier.uri
http://hdl.handle.net/11336/180206
dc.description.abstract
We report on the analysis of the Chandra-ACIS data of O, B, and WR stars in the young association Cyg OB2. X-ray spectra of 49 O-stars, 54 B-stars, and 3 WR-stars are analyzed and for the brighter sources, the epoch dependence of the X-ray fluxes is investigated. The O-stars in Cyg OB2 follow a well-defined scaling relation between their X-ray and bolometric luminosities: . This relation is in excellent agreement with the one previously derived for the Carina OB1 association. Except for the brightest O-star binaries, there is no general X-ray overluminosity due to colliding winds in O-star binaries. Roughly half of the known B-stars in the surveyed field are detected, but they fail to display a clear relationship between LX and Lbol. Out of the three WR stars in Cyg OB2, probably only WR 144 is itself responsible for the observed level of X-ray emission, at a very low . The X-ray emission of the other two WR-stars (WR 145 and 146) is most probably due to their O-type companion along with a moderate contribution from a wind-wind interaction zone.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
IOP Publishing
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
OPEN CLUSTERS AND ASSOCIATIONS: INDIVIDUAL (CYG OB2)
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STARS: EARLY-TYPE
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STARS: WOLF-RAYET
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X-RAYS: STARS
dc.subject.classification
Astronomía
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dc.subject.classification
Ciencias Físicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
X-Ray Emission from Massive Stars in Cyg OB2
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-12-05T15:09:46Z
dc.journal.volume
221
dc.journal.number
1
dc.journal.pagination
1-20
dc.journal.pais
Reino Unido
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dc.journal.ciudad
Londres
dc.description.fil
Fil: Rauw, G.. Université de Liège; Bélgica
dc.description.fil
Fil: Naze, Y.. Université de Liège; Bélgica
dc.description.fil
Fil: Wright, N. J.. University Of Hertfordshire; Reino Unido
dc.description.fil
Fil: Drake, J. J.. Istituto Nazionale di Astrofísica. Osservatorio Astronómico di Palermo; Italia
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Fil: Guarcello, M.G.. No especifíca;
dc.description.fil
Fil: Prinja, R. K.. University College London; Estados Unidos
dc.description.fil
Fil: Peck, L. W.. University College London; Estados Unidos
dc.description.fil
Fil: Albacete Colombo, Juan Facundo. Universidad Nacional del Comahue; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Patagonia Confluencia; Argentina
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Fil: Herrero, A.. Universidad de La Laguna; España
dc.description.fil
Fil: Kobulnicky, H. A.. University of Wyoming; Estados Unidos
dc.description.fil
Fil: Sciortino, S.. Istituto Nazionale di Astrofísica. Osservatorio Astronómico di Palermo; Italia
dc.journal.title
Astrophysical Journal Supplement Series
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.1088/0067-0049/221/1/1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1088/0067-0049/221/1/1
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