The different origins of magnetic fields and activity in the Hertzsprung gap stars, OU Andromedae and 31 Comae

2016/04/15 by A. Borisova, Ana Borisova, M. Aurière +6 · 14 citations
Physics and Astronomy · #Astro and Planetary Science #Astronomy #Astrophysics #Astrophysics and Star Formation Studies #Biology #Context (archaeology) #Giant star #Hertzsprung–Russell diagram #Physics #Stars #Stellar evolution #Stellar, planetary, and galactic studies #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201526726

published in Astronomy and Astrophysics 591, A57 (EDP Sciences) · 16 pages, 12 figures

openalex publication_date 2016/04/15 · arxiv created 2016/04/26 · arxiv updated 2016/06/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Context. When crossing the Hertzsprung gap, intermediate-mass stars develop a convective envelope. Fast rotators on the main sequence, or Ap star descendants, are expected to become magnetic active subgiants during this evolutionary phase.

Citations

• The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars
• The magnetic fields at the surface of active single G-K giants
• Transformations from Theoretical Hertzsprung-Russell Diagrams to Color-Magnitude Diagrams: Effective Temperatures, B-V Colors, and Bolometric Corrections
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• Validation of the new Hipparcos reduction
• The Two Micron All Sky Survey (2MASS)
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• Large-scale magnetic topologies of late M dwarfs★