Journal Article

Detection of an increasing orbital period in the subdwarf B eclipsing system NSVS 14256825

D. Kilkenny and C. Koen

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 421, issue 4, pages 3238-3241
Published in print April 2012 | ISSN: 0035-8711
Published online April 2012 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2012.20547.x
Detection of an increasing orbital period in the subdwarf B eclipsing system NSVS 14256825

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New timings of eclipses made in 2010 and 2011 are presented for the hot subdwarf B (sdB) eclipsing binary NSVS 14256825. Composed of an sdB star and a much cooler companion, with a period near 0.1104 days, this system is very similar to the prototype sdB eclipsing binary HW Vir. The new observations show that the binary period of NSVS 14256825 is rapidly increasing at a rate of about 12 × 10−12 days orbit−1.

Keywords: binaries: eclipsing; stars: individual: NSVS 14256825

Journal Article.  2842 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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