Astronomy and Astrophysics – Astrophysics
Scientific paper
2006-08-15
Astrophys.J.649:L111-L114,2006
Astronomy and Astrophysics
Astrophysics
5 pages including 2 postscript figures (slightly reduced), ApJ Letters, submitted July 19, 2006, accepted August 11, 2006
Scientific paper
10.1086/508350
We present new optical and X-ray observations to show that the X-ray source 1 WGA J1346.5--6255 previously associated with the SNR G309.2--0.6 can be unequivocally identified with the emission line star HD 119682 located in the foreground open cluster NGC 5281. Images from Chandra in the X-ray band as well as from Magellan in the narrow optical H-alpha band show a coincidence of the source positions within 0.5". The X-ray source appears extremely hot for an OB-star identified as of O9.7e type. XMM-Newton spectra show plasma temperatures of 1 keV and >8 keV with an X-ray luminosity of 6.2E32 +/-0.1E32 erg/s. The optical and X-ray properties are very reminiscent of the prototype emission line star Gamma-Cas. We discuss the ramifications of this similarity with respect to very early type emission line stars as a new class of hard X-ray sources.
Rakowski Cara E.
Schulz Norbert S.
Testa Paola
Wolk Scott J.
No associations
LandOfFree
Extraordinarily Hot X-ray Emission from the 09 Emission Line Star HD 119682 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Extraordinarily Hot X-ray Emission from the 09 Emission Line Star HD 119682, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extraordinarily Hot X-ray Emission from the 09 Emission Line Star HD 119682 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-100322