Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1779494 | New Astronomy | 2010 | 6 Pages |
Abstract
Assuming that soft X-ray sources in symbiotic stars result from strong thermonuclear runaways, and supersoft X-ray sources from weak thermonuclear runaways or steady hydrogen burning symbiotic stars, we investigate the Galactic soft and supersoft X-ray sources in symbiotic stars by means of population synthesis. The Galactic occurrence rates of soft X-ray sources and supersoft X-ray sources are from ∼2 to 20 yr−1, and ∼2 to 17 yr−1, respectively. The numbers of X-ray sources in symbiotic stars range from 2390 to 6120. We simulate the distribution of X-ray sources over orbital periods, masses and mass accretion rates of white dwarfs. The agreement with observations is reasonable.
Related Topics
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Authors
Chunhua Zhu, Guoliang Lü, Zhaojun Wang, Jun Zhang,