Main-sequence evolution with efficient central energy transport

Abstract

view Abstract Citations (27) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Main-Sequence Evolution with Efficient Central Energy Transport Faulkner, John ; Swenson, Fritz J. Abstract Simultaneous solution of the solar neutrino and pulsation problems strongly suggests that in the center of the Sun, energy is transported by a more efficient means than is provided by current, conventional physics. Here, in a first, isothermal approximation, the main-sequence consequences are explored of supposing that the Sun and other 1 solar mass stars contain a relatively efficient means of central energy transport. It is found that, for given initial compositions, the ages of models reaching a given turn-off surface temperature may easily be reduced from the conventionally deduced values by 15-20 percent. The models leave the vicinity of the zero-age main sequence with central hydrogen much less exhausted than usual. This indicates that the possession of a near-isothermal core and the attempted violation of the Schoenberg-Chandrasekhar theorem dominate over mere hydrogen exhaustion in determining the time for departure from the main sequence. Areas of astrophysics that may be affected by these results are indicated. Publication: The Astrophysical Journal Pub Date: June 1988 DOI: 10.1086/185174 Bibcode: 1988ApJ...329L..47F Keywords: Energy Transfer; Main Sequence Stars; Solar Neutrinos; Solar Oscillations; Stellar Evolution; Isothermal Processes; Stellar Oscillations; Astrophysics; NEUTRINOS; STARS: EVOLUTION; STARS: PULSATION; SUN: INTERIOR; SUN: OSCILLATIONS full text sources ADS |