Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....69...23c&link_type=abstract
Astronomy and Astrophysics, vol. 69, no. 1, Sept. 1978, p. 23-33. Research supported by the Consiglio Nazionale delle Ricerche.
Astronomy and Astrophysics
Astrophysics
19
Eclipsing Binary Stars, F Stars, Fine Structure, Stellar Atmospheres, Stellar Spectrophotometry, Supergiant Stars, Abundance, Atmospheric Models, Atmospheric Turbulence, Line Spectra, Stellar Luminosity, Stellar Mass, Stellar Spectra, Tables (Data)
Scientific paper
Seven spectrograms of Epsilon Aur obtained outside of eclipse are used to study the atmosphere of the F supergiant primary star by the method of fine analysis. A plane-parallel radiative-equilibrium LTE model atmosphere with an electron temperature of about 7800 K, log g of unity, and a microturbulence that increases with optical depth is computed and employed in the analysis. The results indicate that the F supergiant primary is in a post-main-sequence phase of evolution and has an absolute visual magnitude of -8.7, a radius of 277 solar radii, a mass of 28 solar masses, a normal chemical composition, and a photosphere that extends in an expanding envelope. It is suggested that shock waves within the star might explain the dynamic state of the extended atmosphere.
No associations
LandOfFree
Fine analysis of the F component of the Epsilon Aurigae system 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 Fine analysis of the F component of the Epsilon Aurigae system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fine analysis of the F component of the Epsilon Aurigae system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-938267