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dc.date.accessioned 2010-08-26T16:05:55Z
dc.date.available 2010-08-26T03:00:00Z
dc.date.issued 2001 es
dc.identifier.uri http://hdl.handle.net/10915/2071
dc.description.abstract Optical spectroscopy of CPD-59° 2635, one of the O-type stars in the open cluster Trumpler 16 in the Carina Nebula, reveals this star to be a double-lined binary system. We have obtained the first radial velocity orbit for this system, consisting of a circular solution with a period of 2.2999 d and semi-amplitudes of 208 and 273 km s−1. This results in minimum masses of 15 and 11 M? for the binary components of CPD-59° 2635, which we classified as O8V and O9.5V, although spectral type variations of the order of 1 subclass, which we identify as the Struve–Sahade effect, seem to be present in both components. From ROSAT HRI observations of CPD −59° 2635 we determine a luminosity ratio log(Lx/Lbol)≈−7, which is similar to that observed for other O-type stars in the Carina Nebula region. No evidence of light variations is present in the available optical or X-ray data sets. es
dc.format.extent p. 78-84 es
dc.language en es
dc.title Optical Spectroscopy of X-Mega Targets in Carina Nebula es
dc.type Articulo es
sedici.identifier.uri http://onlinelibrary.wiley.com/doi/10.1046/j.1365-8711.2001.04497.x/pdf es
sedici.title.subtitle I. CPD -59:2635: A New Double-Lined O-Type Binary in the Carina Nebula es
sedici.creator.person Albacete Colombo, Juan Facundo es
sedici.creator.person Morrell, Nidia es
sedici.creator.person Niemela, Virpi es
sedici.creator.person Corcoran, Michael es
sedici.subject.materias Ciencias Astronómicas es
sedici.subject.descriptores Geofísica, astronomía y astrofísica es
sedici.subject.keyword binaries: general; stars: early-type; stars: individual: CPD 2598 2635; open clusters and associations: individual: Trumpler 16; X-rays: stars es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Astronómicas y Geofísicas es
sedici.subtype Articulo es
sedici2003.identifier ARG-UNLP-ART-0000006370 es
sedici.relation.journalTitle Monthly Notices of the Royal Astronomical Society es
sedici.relation.journalVolumeAndIssue no. 326 es

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