Orbital periods of the binary sdB stars PG0940+068 and PG1247+554

Details Orbital periods of the binary sdB stars PG0940+068 and PG1247+554 Orbital periods of the binary sdB stars PG0940+068 and PG1247+554

1999-10-28

arxiv.org/abs/astro-ph/9910511v2

MNRAS 311, 877, 2000

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures

Scientific paper

10.1046/j.1365-8711.2000.03102.x

We have used the radial velocity variations of two sdB stars previously reported to be binaries to establish their orbital periods. They are PG0940+068, (P=8.33d) and PG1247+554 (P=0.599d). The minimum masses of the unseen companions, assuming a mass of 0.5 solar masses for the sdB stars, are 0.090 +/- 0.003 solar masses for PG1247+554 and 0.63 +/- 0.02 solar masses for PG0940+068. The nature of the companions is not constrained further by our data.

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