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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