Evento
Multiwavelength study of the intriguing massive star CPD-59 2629 (Tr 16-22)
Combi, Jorge Ariel
; Albacete Colombo, Juan Facundo
; Luque Escamilla, Pedro L.; Romero, Gustavo Esteban
; Gamen, Roberto Claudio
; Benaglia, Paula
; Martí, Josep; Lopez Santiago, J.; E. Sanchez Ayaso; Muñoz Arjonilla, Álvaro José; Sánchez Sutil, Juan R.
Tipo del evento:
Congreso
Nombre del evento:
39th Liège Astrophysical Colloquium
Fecha del evento:
12/07/2010
Institución Organizadora:
Université de Liègue;
Título de la revista:
Bulletin de la Société Royale des Sciences de Liège
Editorial:
Societé Royale des Sciences de Liege
ISSN:
0037-9565
e-ISSN:
1783-5720
Idioma:
Inglés
Clasificación temática:
Resumen
We report preliminary results of a multi-wavelength (radio–optical–X-ray) study of the massive star CPD −59 2629 (Tr 16-22) in the Carina Nebula (NGC 3372). This star has historically shown a large X-ray excess (log LX/Lbol < −6 or even larger), which is one order of magnitude larger than expected from single massive O-type stars. A colliding wind scenario is a plausible explanation. On this subject, we searched for non-thermal radio emission and used high-resolution optical spectroscopy to check for multiplicity and investigate the nature of the stars as well as the origin and excess of the X-ray emission. We detected long-term radial-velocity and X-ray variability. Both results suggest that Tr 16-22 is a long-term massive binary system and a variable colliding wind shock scenario.
Palabras clave:
MASSIVE STARS
,
X-RAY EMISSION
,
RADIO CONTINUUM: STARS
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Identificadores
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Eventos(IAR)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Eventos de INST.ARG.DE RADIOASTRONOMIA (I)
Citación
Multiwavelength study of the intriguing massive star CPD-59 2629 (Tr 16-22); 39th Liège Astrophysical Colloquium; Liègue; Bélgica; 2010; 644-647
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