Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993aas...18311012b&link_type=abstract
American Astronomical Society, 183rd AAS Meeting, #110.12; Bulletin of the American Astronomical Society, Vol. 25, p.1456
Astronomy and Astrophysics
Astronomy
Scientific paper
We report on our search for diffuse emission from OB associations observed with the Einstein IPC. Our sample includes nine associations; only two, Ser OB2 and Car OB2, show any evidence for significant unresolved extended emission. Using extinctions and distances taken from Humphreys (1987) and assuming a RS thermal bremsstrahlung emission spectrum with T ~ 6 x 10(6) K, we find that the X-ray luminosities of the two regions range from ~ 10(32) to ~ 10(33) ergs s(-1) , comparable to the value claimed by Fabian & Stewart (1983) for a similar region in Cep OB3. Although the emission could be truly diffuse (i.e., the result of non-radiative heating of the ambient gas by the association members), we consider the possibility of unresolved point sources as still tenable. To further elucidate this latter possibility we have ROSAT HRI observations planned for next year. Partial support for this project has been provided by NASA through grant NAG8-148.
Buls F.
Caillault Jean-Pierre
No associations
LandOfFree
A Search for Diffuse X-Ray Emission from OB Associations 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 A Search for Diffuse X-Ray Emission from OB Associations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Search for Diffuse X-Ray Emission from OB Associations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-781544