On stellar evolution in a neutrino hertzsprung-russell diagram

Ebraheem Farag, F. X. Timmes, Morgan Taylor, Kelly M. Patton, R. Farmer

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We explore the evolution of a select grid of solar metallicity stellar models from their pre-main-sequence phase to near their final fates in a neutrino Hertzsprung Russell diagram, where the neutrino luminosity replaces the traditional photon luminosity. Using a calibrated MESA solar model for the solar neutrino luminosity (presented entiti) as a normalization, we identify ;0.3MeV electron neutrino emission from helium burning during the helium flash (presented entiti)2 cm-2 s-1 for a star located at a distance of d parsec, timescale ;3 days) and the thermal pulse (presented entiti), timescale ;0.1 yr) phases of evolution in low-mass stars as potential probes for stellar neutrino astronomy. We also delineate the contribution of neutrinos from nuclear reactions and thermal processes to the total neutrino loss along the stellar tracks in a neutrino Hertzsprung Russell diagram. We find, broadly but with exceptions, that neutrinos from nuclear reactions dominate whenever hydrogen and helium burn, and that neutrinos from thermal processes dominate otherwise.

Original languageEnglish (US)
Article number133
JournalAstrophysical Journal
Issue number2
StatePublished - Apr 20 2020

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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