Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-25
Astrophys.J. 626 (2005) 272-282
Astronomy and Astrophysics
Astrophysics
15 pages, 8 figures, data table not included because of size limits
Scientific paper
10.1086/429988
We report the discovery of X-rays from both components of Cepheus A, East and West, with the XMM-Newton Observatory. HH 168 joins the ranks of other energetic Herbig Haro objects that are sources of T~10^6 K X-ray emission. The HH 168 effective temperature is T = 5.8 (+3.5,-2.3) x 10^6 K and its unabsorbed luminosity is 1.1 x 10^29 erg s^-1, making it hotter and less luminous than other representatives of its class. We also detect prominent X-ray emission from the complex of compact radio sources believed to be the power sources for Cep A. We call this source HWX and it is distinguished by its hard X-ray spectrum, T = 1.2 (+1.2,-0.5) x 10^8 K, and complex spatial distribution. It may arise from one or more protostars associated with the radio complex, the outflows, or a combination of the two. We detect 102 X-rays sources; many presumed to be pre-main sequence stars based upon the reddening of their optical/IR counterparts.
Pravdo Steven Howard
Tsuboi Yohko
No associations
LandOfFree
X-rays from Cepheus A East and West 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 X-rays from Cepheus A East and West, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-rays from Cepheus A East and West will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-303425