The timescale of low-mass proto-helium white dwarf evolution

2014/10/20 by A. G. Istrate, Alina Istrate, T. M. Tauris +5
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Stellar, planetary, and galactic studies #astro-ph.HE #astro-ph.SR

paper · pdf · doi:10.1051/0004-6361/201424681

published as A&A 571, L3 (2014) · 6 pages, 6 figures, 2 tables, A&A Letters, accepted

arxiv created 2014/10/20 · openalex publication_date 2014/10/23 · arxiv updated 2014/11/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Context. A large number of low-mass ( < 0.20 M ) helium white dwarfs (He WDs) have recently been discovered. The majority of these are orbiting another WD or a millisecond pulsar (MSP) in a close binary system; a few examples are found to show pulsations or to have a main-sequence star companion. There appear to be discrepancies between the current theoretical modelling of such lowmass He WDs and a number of key observed cases, indicating that their formation scenario yet remains to be fully understood.

Citations

• Optical Detection of a Variable Millisecond Pulsar Companion in 47 Tucanae
• Discovery of an Unbound Hypervelocity Star in the Milky Way Halo
• The WASP Project and the SuperWASP Cameras
• The formation of low-mass helium white dwarfs orbiting pulsars

Cited by

• The formation of low-mass helium white dwarfs orbiting pulsars