Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...236l..25r&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 236, no. 2, Sept. 1990, p. L25-L28.
Astronomy and Astrophysics
Astrophysics
15
Cool Stars, Red Giant Stars, Stellar Coronas, Stellar Luminosity, Absorption Spectra, Iue, Radiative Transfer, Spectral Line Width, Stellar Atmospheres, Stellar Winds
Scientific paper
Two time series of observations of the corona of HR 6902, as seen in the CIV and SiIV absorption lines during the 1988 and 1989 eclipses, are used to examine the density distribution of the expanding corona as a function of height. It is shown that the scaling laws for thermally driven winds predict coronal densities and mass-loss rates too low by factors of 1000 and 10,000, respectively. This is attributed to the fact that the density scale height by far exceeds the thermal hydrostatic equilibrium value and keeps coronal densities high far outwards up to the critical point of the flow.
Baade Robert
Ising J.
Reimers Dieter
Schroeder Klaus-Peter
No associations
LandOfFree
First observations of a corona of a cool bright giant with height resolution 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 First observations of a corona of a cool bright giant with height resolution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First observations of a corona of a cool bright giant with height resolution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1399956