Hot subluminous Stars: Highlights from the MUCHFUSS and Kepler missions
Ulrich Heber, Stephan Geier, Boris Gaensicke
TL;DR
This paper reviews recent advances in hot subdwarf star research, highlighting magnetic field detections, Kepler-based discoveries, and a key binary system relevant to supernova progenitors.
Contribution
It provides a comprehensive overview of recent findings in hot subdwarf stars, including magnetic fields, Kepler observations, and a significant binary system from the MUCHFUSS project.
Findings
Detection of a highly-magnetic, helium-rich sdO star.
Summary of Kepler light curve discoveries.
Identification of a close sdB+WD binary as a supernova progenitor.
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.
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