A PILOT DEEP SURVEY FOR X-RAY EMISSION FROM fuvAGB STARS

ABSTRACT We report the results of a pilot survey for X-ray emission from a newly discovered class of AGB stars with far-ultraviolet excesses (fuvAGB stars) using XMM-Newton and Chandra. We detected X-ray emission in three of six fuvAGB stars observed-the X-ray fluxes are found to vary in a stochasti...

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Veröffentlicht in:	The Astrophysical journal 2015-09, Vol.810 (1), p.1-9
Hauptverfasser:	Sahai, R., Sanz-Forcada, J., Sánchez Contreras, C., Stute, M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Accretion ACCRETION DISKS ASTROPHYSICS, COSMOLOGY AND ASTRONOMY binaries: general binaries: symbiotic circumstellar matter ELECTRON TEMPERATURE EMISSION EMISSION SPECTRA FAR ULTRAVIOLET RADIATION Fluxes ION TEMPERATURE LUMINOSITY MAGNETIC FIELDS MASS TRANSFER PERIODICITY Pilots STAR ACCRETION Stars stars: AGB and post-AGB stars: individual (EY, Hya, Y, Gem, CI, Hyi) stars: mass-loss STELLAR CORONAE STELLAR WINDS STOCHASTIC PROCESSES SYMBIOTIC STARS X RADIATION X-rays XMM (spacecraft)
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