ASCA Observations of Eta Carinae

Details ASCA Observations of Eta Carinae ASCA Observations of Eta Carinae

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997pasj...49...85t&link_type=abstract

Publications of the Astronomical Society of Japan, v.49, p.85-92.

Astronomy and Astrophysics

Astronomy

25

Stars: Abundances, Stars: Early-Type, Stars: Individual (Eta Carinae), Stars: X-Rays, X-Rays: Spectra

Scientific paper

We present ASCA results on the peculiar star eta Car in the center of the Carina Nebula. The X-ray emission from eta Car was found to be attributable to two thermal components: the high-temperature component (kT ~ 5 keV) is consistent with a point source, and is highly absorbed, while the low-temperature plasma (kT ~ 0.7 keV) is extended, and shows no significant circumstellar absorption. We found a line-like structure around 0.5 keV, which is probably due to the Lyalpha line of nitrogen. Using a variable-abundance coronal plasma model, we found that the relative abundance of nitrogen to oxygen is extremely large in comparison with the solar value. This may be the first X-ray evidence of the enrichment of CNO-processed material in an evolved massive star.

Affiliated with

Also associated with

No associations

Rating

ASCA Observations of Eta Carinae 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 ASCA Observations of Eta Carinae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and ASCA Observations of Eta Carinae will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1607195