Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249..647s&link_type=abstract
Astrophysical Journal, Part 1, vol 249, Oct. 15, 1981, p. 647-661.
Astronomy and Astrophysics
Astronomy
135
Heao 2, Spaceborne Astronomy, Star Clusters, Stellar Coronas, Stellar Radiation, X Ray Sources, Astronomical Catalogs, Dwarf Stars, Giant Stars, Main Sequence Stars, Scaling Laws, Stellar Luminosity, Stellar Rotation, Stellar Temperature, White Dwarf Stars, X Ray Astronomy
Scientific paper
An X-ray survey of the central region of the Hyades cluster demonstrates that soft X-ray emission is a common property of the stars in the cluster. Half of the 85 stars surveyed are detected above a sensitivity threshold of 10 to the 28.5th ergs/s at the Hyades distance of 45 pc. The high incidence of X-ray emission and range of observed X-ray luminosities indicate that stellar coronas produce the observed X-ray emission, with a typical X-ray luminosity for solar-type Hyades of 10 to the 29th ergs/s. The use of coronal scaling laws is found to yield reasonable values of maximum coronal temperatures and the fraction of stellar surface covered for the Hyades coronas.
Antiochos Spiro K.
Stern Robert A.
Underwood James H.
Zolcinski Ch. M.
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