Hot subluminous Stars: Highlights from the MUCHFUSS and Kepler missions

Abstract

Research into hot subdwarf stars is progressing rapidly. We present recent important discoveries. First we review the knowledge about magnetic fields in hot subdwarfs and highlight the first detection of a highly-magnetic, helium-rich sdO star. We briefly summarize recent discoveries based on Kepler light curves and finally introduce the closest known sdB+WD binary discovered by the MUCHFUSS project and discuss its relevance as progenitor of a double-detonation type Ia supernova.

6 pages, 4 figures, to appear in "Ageing low-mass stars: from red giants to white dwarfs", LIAC40 proceedings

References in corpus (3)

• Double-detonation sub-Chandrasekhar supernovae: can minimum helium shell masses detonate the core?
• The quest for companions to post-common envelope binaries: III. A reexamination of HW Virginis
• The magnetic fields of hot subdwarf stars

Cited by in corpus (7)

• Hot subluminous stars
• A progenitor binary and an ejected mass donor remnant of faint type Ia supernovae
• The catalogue of radial velocity variable hot subluminous stars from the MUCHFUSS project
• The enigmatic He-sdB pulsator LS IV$-$14${}^{\circ }$116: new insights from the VLT
• Discovery of a highly magnetic He-sdO star from a double-degenerate binary merger
• Looking into the cradle of the grave: J22564-5910, a young post-merger hot subdwarf?
• Discovery and analysis of three magnetic hot subdwarf stars: evidence for merger-induced magnetic fields