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Variability of CHXR 20: accretion, extinction, spots or a companion?

Published online by Cambridge University Press:  06 January 2014

Taisiya G. Kopytova
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: [email protected] International Max-Planck Research School for Astronomy and Cosmic Physics at the University of Heidelberg, IMPRS-HD, Germany
Viki Joergens
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: [email protected] Zentrum für Astronomie, Institut für Theoretische Astrophysik, Albert-Ueberle-Str. 2, 69120 Heidelberg, Germany
Aurora Sicilia-Aguilar
Affiliation:
Departamento de Física Teórica, Facultad de Ciencias, Universidad Autónoma de Madrid Cantoblanco, 28049 Madrid, Spain
Maria V. Rodríguez-Ledesma
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: [email protected] Institut für Astrophysik, Georg-August-Universität, Friedrich-Hund-Platz, 37077 Göttingen, Germany
Reinhard Mundt
Affiliation:
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany email: [email protected]
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Abstract

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We study the photometric variability of a pre-main sequence star (K6, 0.9M) CHXR 20. We test several scenarios for the variability including variable accretion, variable extinction, cool and hot spots on the stellar surface and the presence of a potential companion.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2013 

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