Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula

High-resolution optical spectroscopy of CPD -59°2636, one of the O-type stars in the open cluster Trumpler 16 in the Carina Nebula, reveals this object to be a multiple system displaying triple lines which we label as components A, B and C of spectral types O7 V, O8 V and O9 V, respectively. From ou...

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Detalles Bibliográficos
Autores principales:	Albacete Colombo, Juan Facundo, Morrell, Nidia Irene, Rauw, G., Corcoran, Michael, Niemelä, Virpi Sinikka, Sana, H.
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2002
Materias:	Ciencias Astronómicas 59°2636 Binaries: general Open clusters and associations: individual: trumpler 16 Stars: early-type Stars: fundamental parameters Stars: individual: CPD X-rays: stars
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/83105
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-83105
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Astronómicas 59°2636 Binaries: general Open clusters and associations: individual: trumpler 16 Stars: early-type Stars: fundamental parameters Stars: individual: CPD X-rays: stars
spellingShingle	Ciencias Astronómicas 59°2636 Binaries: general Open clusters and associations: individual: trumpler 16 Stars: early-type Stars: fundamental parameters Stars: individual: CPD X-rays: stars Albacete Colombo, Juan Facundo Morrell, Nidia Irene Rauw, G. Corcoran, Michael Niemelä, Virpi Sinikka Sana, H. Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula
topic_facet	Ciencias Astronómicas 59°2636 Binaries: general Open clusters and associations: individual: trumpler 16 Stars: early-type Stars: fundamental parameters Stars: individual: CPD X-rays: stars
description	High-resolution optical spectroscopy of CPD -59°2636, one of the O-type stars in the open cluster Trumpler 16 in the Carina Nebula, reveals this object to be a multiple system displaying triple lines which we label as components A, B and C of spectral types O7 V, O8 V and O9 V, respectively. From our radial velocity measurements we find that the components A and B form a close binary with a period of 3.6284 d, and we obtain the first circular radial velocity orbit for this system with semi-amplitudes of 184 and 192 km s-1, leading to minimum masses of 10.1 and 9.7 M⊙. We find that the component C is a single lined binary with a period of 5.034 d and semi-amplitude of 48 km s-1. We also analyse the X-ray radiation from CPD -59°2636, finding neither appreciable overluminosity nor phase-related X-ray flux variations.
format	Articulo Articulo
author	Albacete Colombo, Juan Facundo Morrell, Nidia Irene Rauw, G. Corcoran, Michael Niemelä, Virpi Sinikka Sana, H.
author_facet	Albacete Colombo, Juan Facundo Morrell, Nidia Irene Rauw, G. Corcoran, Michael Niemelä, Virpi Sinikka Sana, H.
author_sort	Albacete Colombo, Juan Facundo
title	Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula
title_short	Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula
title_full	Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula
title_fullStr	Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula
title_full_unstemmed	Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula
title_sort	optical spectroscopy of x-mega targets : iv. cpd -59°2636: a new o-type multiple system in the carina nebula
publishDate	2002
url	http://sedici.unlp.edu.ar/handle/10915/83105
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bdutipo_str	Repositorios
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Optical spectroscopy of X-Mega targets : IV. CPD -59°2636: A new O-type multiple system in the Carina Nebula

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