Physics
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cokon.104..149b&link_type=abstract
Communications from the Konkoly Observatory, Proceedings of the Detre Centennial Conference; editors: L.G. Balazs, L. Szabados,
Physics
Scientific paper
A purely photometric method is reviewed to determine distance, mass, equilibrium temperature, and luminosity of pulsating stars by using model atmospheres and hydrodynamics. T Sex is given as an example: on the basis of Kurucz atmospheric models and UBVRI (in both Johnson and Kron-Cousins systems) data, variation of angular diameter, effective temperature, and surface gravity is derived as a function of phase, mass M=(0.76± 0.09) M&sun;, distance d=530± 67 pc, Rmax=2.99R&sun;, Rmin=2.87R&sun;, magnitude averaged visual absolute brightness < MVmag>=1.17± 0.26 mag are found. During a pulsation cycle four standstills of the atmosphere are pointed out indicating the occurrence of two shocks in the atmosphere. The derived equilibrium temperature Teq=7781 K and luminosity (28.3± 8.8)L&sun; locate T Sex on the blue edge of the instability strip in a theoretical Hertzsprung-Russell diagram. The differences of the physical parameters from this study and Liu & Janes (1990) are discussed.
No associations
LandOfFree
Fundamental parameters of pulsating stars from atmospheric models 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 Fundamental parameters of pulsating stars from atmospheric models, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fundamental parameters of pulsating stars from atmospheric models will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1244781