Rotational properties of composite polytrope models

Journal Article · Wed Jun 01 00:00:00 EDT 1988 · Astron. J.; (United States)

DOI:https://doi.org/10.1086/114784· OSTI ID:6969489

Rucinski, S M

Factional radii of gyration for both the convective envelope and the radiative core have been determined using the composite-polytrope model of Rappaport et al. (1983) which describes low-mass stars by appropriately matched polytropes n(outer) = 3/2 and n(inner) = 3. Radii of gyration computed for ZAMS stars with masses of 0.4-1.2 solar masses are used to obtain ZAMS angular momenta for low-mass rapidly rotating stars in the Pleiades and Alpha Persei clusters. Results indicate that there is little chance of observing single young early G and late F type stars in rapid rotation because of the very short timescales for braking of their thin convective envelopes. 41 references.

• Research Organization: David Dunlap Observatory, Richmond Hill (Canada)
• OSTI ID: 6969489
• Journal Information: Astron. J.; (United States), Vol. 95
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
STAR MODELS
STARS
ROTATION
ANGULAR MOMENTUM
MASS
STAR CLUSTERS
MATHEMATICAL MODELS
MOTION
640102* - Astrophysics & Cosmology- Stars & Quasi-Stellar
Radio & X-Ray Sources