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arXiv · 1302.5313

New β Cephei variable in the Southern open cluster NGC 6200: ALS 3728

C. Ulusoy·E. Niemczura·B. Ulaş·T. Gülmez
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Abstract

We report the evidence of a new $β$ Cephei type variable located in the Southern open cluster \astrobj{NGC 6200}: \astrobj{ALS 3728}. Spectroscopic and photometric observations of NGC\,6200 stars were carried out at the South African Astronomical Observatory (SAAO) in 2011. It was found that \astrobj{ALS 3728} has a frequency of about 4.95 d$^{-1}$ with highest amplitude. The star also shows a remarkable stillstand phase just before its light maxima which is a typical characteristic occurring among these type of stars. Furthermore, a mode identification is applied for the dominant frequency that is calculated from the Fourier analysis.

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C. Ulusoy, E. Niemczura, B. Ulaş, T. Gülmez. 2013-02-26. New β Cephei variable in the Southern open cluster NGC 6200: ALS 3728. https://doi.org/10.1016/j.newast.2013.02.005

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