Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-27T09:29:49.494Z Has data issue: false hasContentIssue false
  • English
  • Français

Chemical abundances on the secondary star in the low-mass x-ray binary Cygnus X-2

Published online by Cambridge University Press:  25 February 2014

L. Suárez-Andrés ,
J.I. González Hernández ,
G. Israelian ,
J. Casares  and
R. Rebolo
L. Suárez-Andrés
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Depto. Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
J.I. González Hernández
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Depto. Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
G. Israelian
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Depto. Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
J. Casares
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Depto. Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain
R. Rebolo
Affiliation:
Instituto de Astrofísica de Canarias, 38205 La Laguna, Tenerife, Spain Depto. Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain Consejo Superior de Investigaciones Científicas, Spain
Get access

Abstract

We present our first results in the analysis of the secondary star in the Low-Mass X-Ray binary (LMXB) Cygnus X-2, using a high resolution spectrum obtained with UES@WHT in ORM (La Palma, Tenerife). We have used a χ2 minimization procedure to create a grid of 1 500 000 LTE synthetic spectra that allow us to obtain a plausible range of values of the stellar parameters, taking into account any possible veiling from the accretion disk produced by the presence of a neutron star as the primary. We will study the chemical abundances of several elements and study their anomalies regarding Galactic trends.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 64: Setting a New Standard in the Analysis of Binary Stars , 2013 , pp. 253 - 256
Copyright
© EAS, EDP Sciences, 2014

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Adibekyan, V.Zh., Sousa, S.G., Santos, N.C., et al, 2012, A&A, 545, A32
Caffau, E., Bonifacio, P., Faraggiana, R., et al, 2005, A&A, 441, 533
Casares, J., González Hernández, J.I., Israelian, G., et al, 2010, MNRAS, 401, 2517CrossRef
González Hernández, J.I., Rebolo, R., Israelian, G., et al, 2004, ApJ, 609, 988CrossRef
González Hernández, J.I., Rebolo, R., Israelian, G., et al, 2005, A&A, 435, 1185
Israelian, G., Rebolo, R., Basri, G., Casares, J., & Martín, E.L., 1999, Nature, 401, 142