The X-ray Emission and the Magnetic Fields of Late-Type Stars

Authors: Shi J.R.¹; Zhao G.²; Zhao Y.²

Source: Astrophysics and Space Science, Volume 282, Number 3, 2002 , pp. 477-488(12)

Publisher: Springer

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Abstract:

We present the results of X-ray luminosities of some active late-type stars, based on data primarily from the ROSAT position sensitive proportional counter (PSPC). According to the observations, we divide the stars into four groups: single, wide binary, binary and RS CVn. We investigated the correlation between the X-ray emission and the hardness ratio, coronal temperature, magnetic field strength, magnetic flux density. Our results suggest that the magnetic field plays a very important role in stellar X-ray emission.

Language: English

Document Type: Research article

Affiliations: 1: National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, P. R. China Chinese Academy of Science Peking University joint Beijing Astrophysical Center, Beijing 100871, China E-mail: sjr@yac.bao.ac.cn 2: National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, P. R. China

Publication date: 2002-01-01