Ab Dor: A single star with RSCVN like, activity in X-ray band

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1996-01-01

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Alev, M
Alpar, MA
Esendemir, A
Kiziloglu, U

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Using the archival ROSAT PSPC observations, AB Dor is found to be variable in X-rays. The periodic variations are consistent with previously reported rotational period of 0(d).514. The average spectrum of AB Dor is best represented with two-temperature Raymond-Smith model with kT values of 0.19 +/- 0.07 and 1.17 +/- 0.02 keV. The quiescent luminosity of the system is found to be 4.36 +/- 0.6 x 10(30) ergs s(-1). A flare with a rise time of similar to 350 seconds is detected during which X-ray luminosity rises from 5.8 +/- 1.6 x 10(30) to 15.8 +/- 4.9 x 10(30) ergs s(-1). We conclude that AB Dor is very similar to the active components of RS CVn binaries and other active classes. In view of the wide separation from the binary companion Rst 137B, this activity must be intrinsic to the active star.

Subject Keywords

Space and Planetary Science, Astronomy and Astrophysics

URI

https://hdl.handle.net/11511/67641

Journal

ASTROPHYSICS AND SPACE SCIENCE

DOI

https://doi.org/10.1007/bf00637800

Collections

Department of Physics, Article

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Citation Formats

M. Alev, M. Alpar, A. Esendemir, and U. Kiziloglu, “Ab Dor: A single star with RSCVN like, activity in X-ray band,” ASTROPHYSICS AND SPACE SCIENCE, pp. 15–25, 1996, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67641.