Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aas...192.8202b&link_type=abstract
American Astronomical Society, 192nd AAS Meeting, #82.02; Bulletin of the American Astronomical Society, Vol. 30, p.1155
Astronomy and Astrophysics
Astronomy
Scientific paper
HR2554 is an eclipsing binary system that contains a G6 II hybrid-chromosphere star and an A dwarf secondary. The orbital period of the binary is 195 days. We present HST GHRS ultraviolet spectra of the grazing eclipses observed in March/April 1994 and May 1995. Absorption line profiles from a range of chromospheric and transition region ions are used to determine the temperature structure and spatial extent of the G6 bright giant's atmosphere. Generally, the transition region lines show a larger extent than the cooler lines. However, we do also detect cool plasma in distinct structures far from the limb of the G star. This work is supported by HST grant GO-05398.01-93A and NASA grant NAG5-3226.
Brown Adrian
Harper Graham M.
Osten Rachel Ann
No associations
LandOfFree
Probing the Chromosphere and Transition Region of G6 Bright Giant in HR2554 Using Eclipse Absorption Line Spectroscopy 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 Probing the Chromosphere and Transition Region of G6 Bright Giant in HR2554 Using Eclipse Absorption Line Spectroscopy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing the Chromosphere and Transition Region of G6 Bright Giant in HR2554 Using Eclipse Absorption Line Spectroscopy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-810412