A search for soft X-ray emission from stellar sources

Details A search for soft X-ray emission from stellar sources A search for soft X-ray emission from stellar sources

Jun 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ap%26ss..42..217m&link_type=abstract

(COSPAR, Symposium on Fast Transients in X- and Gamma-Rays, Varna, Bulgaria, May 29-31, 1975.) Astrophysics and Space Science, v

Astronomy and Astrophysics

Astronomy

12

Astronomical Netherlands Satellite, Hot Stars, Spaceborne Astronomy, Stellar Radiation, X Ray Astronomy, Coronas, Main Sequence Stars, Radiant Flux Density, Radiation Detectors, Satellite-Borne Instruments, Stellar Luminosity, Stellar Spectra, Supergiant Stars, Ultraviolet Radiation, Ultraviolet Spectroscopy

Scientific paper

With the soft X-ray detector (about 0.2-0.284 keV) aboard the Astronomical Netherlands Satellite (ANS) we have searched for X-ray emission from hot star coronae and peculiar stars. On Sirius (alpha CMa) and Capella (alpha Aur) X-ray emission has been measured at 6 sigma and 5 sigma level, respectively, above background. In all other cases the search revealed no evidence for soft X-ray emission. Upper limits to the luminosities of about 25 star coronae (main-sequence stars, (sub)giants, and supergiants) and of 4 peculiar stars (lambda Sco, beta Lyr, P Cyg, and eta Car) have been obtained.

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