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Nightmare on 'ELM' Street: The Search for Low log g Values
Proceedings of Frank N. Bash Symposium 2015 — PoS(BASH2015)
Although the average mass of white dwarf (WD) stars is 0.6 ± 0.1M , recent surveys have found a number of extremely low mass (ELM) WDs, with masses less than 0.25 solar masses. Recently, we discovered large-amplitude pulsations in one such supposed ELM WD having effective temperature T eff ≈ 8000K and a surface gravity described by log(g) ≈ 4.6. While this log(g) value is nominally too high for it to be a main sequence star, it is also quite low to be an ELM WD. Using the open source stellardoi:10.22323/1.261.0021 fatcat:ootc2lxtbjcsve36hmgutikv3y