Artículo

A CH star in the globular cluster NGC 6426

Sharina, M.; Aringer, B.; Davoust, E.; Kniazev, A.; Donzelli, Carlos JoseIcon
Fecha de publicación: 10/2012
Editorial: Wiley Blackwell Publishing, Inc
Revista: Monthly Notices of the Royal Astronomical Society: Letters
ISSN: 0035-8711
e-ISSN: 1745-3933
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

We report on the serendipitous discovery of a carbon star near the centre of the low-metallicity globular cluster NGC 6426. We determined its membership and chemical properties using medium-resolution spectra. The radial velocity of -159 km s-1 makes it a member of the cluster. We used photometric data from the literature and the COMARCS stellar atmospheric models to derive its luminosity, effective temperature, surface gravity, metallicity, and approximate C, N and O abundance ratios. According to these properties, we suggest that this star is a genuine carbon-rich low-metallicity asymptotic giant branch star. © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS.
Palabras clave: GLOBULAR CLUSTERS: INDIVIDUAL: NGC 6426 , STARS: CARBON
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/190932
URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1745-3933.2012.01317.x/full
DOI: https://doi.org/10.1111/j.1745-3933.2012.01317.x
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Articulos de INST.DE ASTRONOMIA TEORICA Y EXPERIMENTAL
Citación
Sharina, M.; Aringer, B.; Davoust, E.; Kniazev, A.; Donzelli, Carlos Jose; A CH star in the globular cluster NGC 6426; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society: Letters; 426; 1; 10-2012; 1-6
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