The Helium Abundance of NGC 6791 from Modeling of Stellar Oscillations

The helium abundance of stars is a strong driver of evolutionary timescales; however, it is difficult to measure in cool stars. We conduct an asteroseismic analysis of NGC 6791, an old, metal-rich open cluster that previous studies have indicated also has a high helium abundance. The cluster was obs...

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Veröffentlicht in:	The Astrophysical journal 2019-04, Vol.874 (2), p.180
Hauptverfasser:	McKeever, Jean M., Basu, Sarbani, Corsaro, Enrico
Format:	Artikel
Sprache:	eng
Schlagworte:	Abundance Age Astronomical models Astrophysics Clusters Cool stars Helium Hydrogen Light curve open clusters and associations: general open clusters and associations: individual (NGC 6791) Parameters Probability distribution Red giant stars stars: oscillations Stellar evolution Stellar models Stellar oscillations Stellar seismology
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