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The Photospheric Abundances of Active Binaries: First Results

Published online by Cambridge University Press:  26 May 2016

T. Morel ,
G. Micela ,
F. Favata ,
D. Katz  and
I. Pillitteri
T. Morel
Affiliation:
INAF, Osservatorio Astronomico di Palermo G. S. Vaiana, Italy
G. Micela
Affiliation:
INAF, Osservatorio Astronomico di Palermo G. S. Vaiana, Italy
F. Favata
Affiliation:
Astrophysics Division ESA, ESTEC, Noordwijk, The Netherlands
D. Katz
Affiliation:
Observatoire de Paris, GEPI, Place Jules Janssen, Meudon, France
I. Pillitteri
Affiliation:
Università di Palermo, Italy

Abstract

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Photospheric parameters and abundances of 13 chemical species are presented for a sample of single-lined chromospherically active binaries from a differential LTE analysis of high-resolution spectra. Our results indicate that the X-ray active binaries studied are not as metal poor as previously claimed, but are at most mildly iron-depleted relative to the Sun (—0.41 ≲ [Fe/H] ≲ +0.11). A significant overabundance of several elements (e.g., Na, Mg, Al, Ca) is observed. The temperatures derived from the (V — R) and (V — I) colours are found to be significantly affected by activity processes.

Type
Part 5: Stellar Magnetic Activity and Evolution
Information
Symposium - International Astronomical Union , Volume 219: Stars as Suns : Activity, Evolution and Planets , 2004 , pp. 259 - 263
Copyright
Copyright © Astronomical Society of the Pacific 2004 

References

Alonso, A., Arribas, S., & Martínez-Roger, C. 1999, A&AS, 140, 261.Google Scholar
Dempsey, R. C., Linsky, J. L., Fleming, T. A., & Schmitt, J. H. M. M. 1993, ApJS, 86, 599.CrossRefGoogle Scholar
Dempsey, R. C., Linsky, J. L., Fleming, T. A., & Schmitt, J. H. M. M. 1997, ApJ, 478, 358.CrossRefGoogle Scholar
Drake, J. J. 1991, MNRAS, 251, 369.CrossRefGoogle Scholar
Feltzing, S., Bensby, T., & Lundström, I. 2003, A&A, 397, L1.Google Scholar
Gratton, R. G., Carretta, E., Eriksson, K., & Gustafsson, B. 1999, A&A, 350, 955.Google Scholar
Katz, D., Favata, F., Aigrain, S., & Micela, G. 2003, A&A, 397, 747.Google Scholar
Morel, T., Micela, G., Favata, F., Katz, D., & Pillitteri, I. 2003, A&A, 412, 495.Google Scholar
Randich, S., Gratton, R., & Pallavicini, R. 1993, A&A, 273, 194.Google Scholar
Randich, S., Giampapa, M. S. & Pallavicini, R. 1994, A&A, 283, 893.Google Scholar
Reddy, B. E., Tomkin, J., Lambert, D. L., & Allende, Prieto, C. 2003, MNRAS, 340, 304.CrossRefGoogle Scholar
Strassmeier, K. G., Hall, D. S., Fekel, F. C., & Scheck, M. 1993, A&AS, 100, 173.Google Scholar