VSX J003909.7+611233: a new Slowly Pulsating B star (SPB) in Cassiopeia?

Дата и время публикации : 2010-01-28T21:58:40Z

Авторы публикации и институты :
David Boyd
Christopher Lloyd
Pierre dePonthiere
Mack Julian
Robert Koff
Tom Krajci
Jeremy Shears
Bart Staels

Ссылка на журнал-издание: J.Br.Astron.Assoc. 121 (2011) 33-35
Коментарии к cтатье: Accepted for publication in Journal of the British Astronomical Association, 6 pages, 6 figures, significant revision of extinction correction.
Первичная категория: astro-ph.SR

Все категории : astro-ph.SR

Краткий обзор статьи: We report the discovery of a new 13th magnitude variable in Cassiopeia close to the variable KP Cas. Analysis of 6 days of intensive photometry shows a regular, near sinusoidal modulation with an amplitude of 0.024 magnitudes and a period of 0.43815(31) d. Although its colour indicates a spectral type around F0 the star probably suffers up to 2 – 2.5 magnitudes of extinction so could be an A- or B-type star. Given the period, the low amplitude, the shape of the light curve and the probable spectral type we consider it most likely to be a slowly pulsating B-type (SPB) star. The variable has been registered in the International Variable Star Index with the identifier VSX J003909.7+611233.

Category: Physics