Science advances not only through discoveries but also through mysteries.
In a recent paper, Investigating the Observational Progenitor Mass Gap in the White Dwarf Initial-Final Mass Relation, we explore an unexpected deficiency of white dwarfs originating from stars within a particular progenitor mass range.
Previous studies hinted at a gap in the Initial-Final Mass Relation, where relatively few white dwarfs appeared to trace back to certain stellar masses. Was this gap real, or simply the result of observational limitations?
To answer that question, we conducted a systematic census of open clusters and identified some of the first compelling white dwarfs occupying this poorly sampled region. Their properties offer new clues about how stars evolve and lose mass before becoming white dwarfs.
Although the mystery is not yet solved, these newly characterized objects provide critical evidence for understanding whether the gap reflects genuine stellar physics or an observational bias.
Paper Information
DOI: https://doi.org/10.3847/1538-4357/ae8b9e
ADS: Abstract and citation record