A possible solution for the lack of EHB binaries in globular clusters

2008/04/30 by Zhanwen Han, Z. Han · 74 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics #Binary star #Blue straggler #Context (archaeology) #Gamma-ray bursts and supernovae #Globular cluster #Horizontal branch #Physics #Population #Star cluster #Stars #Stellar evolution #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1051/0004-6361:200809614

published in Astronomy and Astrophysics 484(3), L31-L34 (EDP Sciences) · 5 pages, 3 figures, accepted for publication in A&A Letters (with language polish by the A&A Language Editor)

arxiv created 2008/05/02 · openalex publication_date 2008/05/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Context. The binary fraction among extreme horizontal branch (EHB) stars in Galactic globular clusters (GCs) is an order of magnitude lower than the binary fraction among their counterparts, field hot subdwarfs. This casts serious doubt on their formation channels.

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