Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...187.4318r&link_type=abstract
American Astronomical Society, 187th AAS Meeting, #43.18; Bulletin of the American Astronomical Society, Vol. 27, p.1343
Astronomy and Astrophysics
Astronomy
1
Scientific paper
Two-dimensional hydrodynamical simulations of mass transfer in short period Algol type binaries were performed using the numerical code VH-1. This code uses the Piecewise Parabolic Method with a Lagrangian Remap. The purpose of the simulations was to study the Hα emission from circumstellar gas in the Algols. Using observational evidence from the literature to constrain the gas stream properties, maps of the Hα emissivity in the two systems beta Per (P = 2.87(d) ) and TT Hya (P = 6.95(d) ) were made in both Cartesian and velocity coordinates. The velocity maps were then compared to Doppler tomograms constructed from observed Hα line emission in these systems. Since the tomograms cannot be directly transformed to spatial maps, the simulated Cartesian maps enabled us to interpret the dynamical processes which produce the features observed in the Doppler tomograms. We find that the simulations produce asymmetric accretion structures with many features similar to those found in Doppler tomograms of such systems.
Ratliff Mark
Richards Mercedes
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