X-ray spectroscopic investigation of the coronal structure of Capella

Details X-ray spectroscopic investigation of the coronal structure of Capella X-ray spectroscopic investigation of the coronal structure of Capella

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981ssrv...30..185g&link_type=abstract

(European Space Agency, ESLAB Symposium on X-ray Astronomy, 15th, Amsterdam, Netherlands, June 22-26, 1981.) Space Science Revie

Astronomy and Astrophysics

Astronomy

6

Binary Stars, Stellar Spectrophotometry, Stellar Structure, X Ray Sources, X Ray Spectroscopy, Abundance, Emission Spectra, Gratings (Spectra), Iron, Line Spectra, Neon, Spectral Resolution, Stellar Temperature, Temperature Distribution, Thermal Plasmas

Scientific paper

The binary system Capella (G6 III + F9 III) has been observed on 1979 March 15 and on 1980 March 15-17 with the Objective Grating Spectrometer (OGS) onboard the Einstein Observatory. The spectrum measured with the 1000 l/mm grating covers the range 5-30 A with a resolution less than 1 A. The spectra show evidence for a bimodal temperature distribution of emission measure in an optically thin plasma with one component approximately 5 million degrees and the other one approximately 10 million degrees. Spectral features can be identified with line emissions from O VIII, Fe XVII, FE XVIII, Fe XXIV, and Ne X ions. Good spectral fits have been obtained assuming standard cosmic abundances. The data are interpreted in terms of emission from hot static coronal loops rather similar to the magnetic arch structures found on the sun. It is shown that the conditions required by this model exist on Capella. Mean values of loop parameters are derived for both temperature components.

Affiliated with

Also associated with

No associations

Rating

X-ray spectroscopic investigation of the coronal structure of Capella 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-ray spectroscopic investigation of the coronal structure of Capella, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-ray spectroscopic investigation of the coronal structure of Capella will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1039858