Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995pasp..107..219a&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 107, no. 709, p. 219-224
Astronomy and Astrophysics
Astronomy
8
Abundance, Binary Stars, Size Determination, Stellar Atmospheres, Stellar Composition, Stellar Mass, Stellar Spectra, Stellar Temperature, Astronomical Spectroscopy, Atmospheric Composition, Calcium, Data Reduction, Iron, Metallicity, Spectrum Analysis
Scientific paper
We present results of a spectroscopic investigation of the A and B components of the visual binary VW Ari. Results are as follows: (1) The atmospheric parameters for the stars are Teff = 7100 K, log g = 3.7 (A component), Teff = 7300 K, log g = 4.3, Vt = 1.9 km/s (B component); (2) the masses and radii are: RA approximately equal to 3.5 solar radii, RB approximately equal to 1.6 solar radii; MA approximately equal to 2.2 solar mass, MB approximately equal to 1.8 solar mass; (3) abundances of 16 elements have been determined for VW Ari B. This star shows solarlike chemical composition for most of the elements. (4) Because of the complicated spectrum of VW Ari A (only a few very shallow lines are seen), we were able to estimate only Ca and Fe abundances in its atmosphere: (Ca/H) = -0.73, (Fe/H) = -0.46. The remarkable metallicity difference between the components strongly supports the hypothesis of stellar capture as the most probable origin of the VW Ari system.
Andrievsky Sergei. M.
Chernyshova I. V.
Galazutdinov G. A.
Kovtyukh Valery V.
Panchuk Vladimir E.
No associations
LandOfFree
The remarkable visual binary system VW Arietis: Chemical composition of its components 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 The remarkable visual binary system VW Arietis: Chemical composition of its components, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The remarkable visual binary system VW Arietis: Chemical composition of its components will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-849215