Revised Temperatures For Two Benchmark M-dwarfs -- Outliers No More
Well-characterised M-dwarfs are rare, particularly with respect to effective temperature. In this letter we re-analyse two benchmark M-dwarfs in eclipsing binaries from Kepler/K2: KIC 1571511AB and HD 24465AB. Both have temperatures reported to be hotter or colder by approximately 1000 K in comparis...
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Main Authors | , , , , , , , , , |
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Format | Journal Article |
Language | English |
Published |
22.08.2022
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Subjects | |
Online Access | Get full text |
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Summary: | Well-characterised M-dwarfs are rare, particularly with respect to effective
temperature. In this letter we re-analyse two benchmark M-dwarfs in eclipsing
binaries from Kepler/K2: KIC 1571511AB and HD 24465AB. Both have temperatures
reported to be hotter or colder by approximately 1000 K in comparison with both
models and the majority of the literature. By modelling the secondary eclipses
with both the original data and new data from TESS we derive significantly
different temperatures which are not outliers. Removing this discrepancy allows
these M-dwarfs to be truly benchmarks. Our work also provides relief to stellar
modellers. We encourage more measurements of M-dwarf effective temperatures
with robust methods. |
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DOI: | 10.48550/arxiv.2208.10510 |