Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...257..199k&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 257, no. 1, p. 199-208.
Astronomy and Astrophysics
Astrophysics
20
Early Stars, Eclipsing Binary Stars, Stellar Orbits, Stellar Systems, Variable Stars, Interstellar Extinction, Radial Velocity, Stellar Mass, Stellar Models, Stellar Rotation
Scientific paper
From a new spectroscopic orbit of the Algol system TV Cas, based on Reticon observations, we find: V(o) = -4.1 +/- 0.8 km/s, K(p) = 86.1 +/- 1.0 km/s and K(s) = 212.9 +/- 3.6 km/s, and m(p)/m(s) = 2.47 +/- 0.05. This measurement of the mass ratio is the first reliable determination but confirms Plaskett's detection of the secondary. The velocity measures themselves are based on fitting theoretical profiles generated by a physical model of the binary, to the observed cross-correlation function. Such profiles match this function very well, much better in fact than Gaussian profiles which are generally used. FWHM measures of the secondary's ccf indicate a rotational velocity of 60 km/s only two-thirds that of synchronism. This result must be checked by measures of the Rossiter effect within secondary eclipse or by direct line measures of the, as yet, unseen secondary spectrum.
Hill Graham
Khalesseh Bahram
No associations
LandOfFree
Studies of early-type variable stars. VII - The orbit and physical parameters for TV Cassiopeiae 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 Studies of early-type variable stars. VII - The orbit and physical parameters for TV Cassiopeiae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Studies of early-type variable stars. VII - The orbit and physical parameters for TV Cassiopeiae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1731665