A search for soft X-ray emission from stellar sources |
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| Authors: | R Mewe J Heise E H B M Gronenschild A C Brinkman J Schrijver A J F den Boggende |
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| Institution: | (1) Space Research Laboratory, Astronomical Institute, Utrecht, Netherlands |
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| Abstract: | With the soft X-ray detector ( 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 ( CMa) and Capella ( Aur) X-ray emission has been measured at 6 and 5 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 ( Sco,  Lyr, P Cyg, and  Car) have been obtained.Paper presented at the COSPAR/IAU Symposium on  Fast Transients in X-and Gamma-Rays , held at Varna, Bulgaria, 29–31 May, 1975. |
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