COMMISSION 27 OF THE I. A. U.
INFORMATION BULLETIN ON VARIABLE STARS
Number 1744
Konkoly Observatory
Budapest
1980 February 22
CATALOGUE OF PARAMETERS FOR ECLIPSING BINARIES
(short communication)
On the basis of A Catalogue of Photometric Parallaxes of Eclipsing Binaries
(Dworak, 1975) geometric and physical parameters for 1048 eclipsing binaries
have been calculated. For calculations we used an iterative method for
numerical solutions of the following equations: the third Kepler's law, the
Stefan- Boltzman law, the mass-luminosity relation and the relation between
relative and absolute radii of components for any eclipsing system.
Additionally the radii of Roche lobes have been calculated according to the
formulae given by Paczynski (1971). The Catalogue will be published in Acta
Astronomica in future. If anybody would like to obtain the computer copy of
the Catalogue he is asked to contact with the authors of this communication.
The Catalogue contains the following data of every given star: the name of the
star according to GCVS (1971); period in days; the parallax in 0."00001;
separation between the components in solar radii; the absolute radii of
components in solar radii; per cent of filling up of the Roche lobe RL1 and
RL2; the integral bolometric luminosities L1 and L2 in solar units; the
temperatures T1 and T2 in kelvins; the sum of mass SM in solar units; the ratio
of mass ALFA; the mass of the first component in solar units; the classical
type of eclipsing binaries according to GCVS (A-algol type, B-beta Lyrae type,
W-W UMa type, E-eclipsing binary of unknown type); the type of Kopal's
classification of the eclipsing systems according to calculated radius of the
Roche lobe (D-detached system, S-semidetached system, C-contact system, where
we understand that the star fills up its Roche lobe if we obtained 95 per cent
or more); and the observed spectrum of the system.
HENRYK K. BRANCEWICZ
Institute of Physics,
School for Higher Education
Krakow, ul. Podchrazych 2.,
Institute of Geodesy,
University of Mining and Metallurgy,
Krakow, Al. Mickiewicza 30
pav. c-4, Poland
T. ZBIGNIEW DWORAK
Institute of Meteorology and Water Management,
Krakow,
ul. Borowego 1, Poland
References:
Dworak, T.Z., 1975, Acta Astron, 25, 383 [BIBCODE 1975AcA....25..383D ]
Kukarkin et al., General Catalogue of Variable Stars 1971, Moscow, third
edition
Paczynski, B., 1971, Ann. Rev. Astron. Ap. 9, 183 [BIBCODE 1971ARA&A...9..183P ]