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Abstract
The scaling relations that relate the average asteroseismic parameters ∆ν and νmax to the global properties of stars are used quite extensively to determine stellar properties. While the ∆ν scaling relation has been examined carefully and the deviations from the relation have been well documented, the νmax scaling relation has not been examined as extensively. In this paper we examine the νmax scaling relation using a set of stellar models constructed to have a wide range of mass, metallicity, and age. We find that as with ∆ν, νmax does not follow the simple scaling relation. The most visible deviation is because of a mean molecular weight term and a Γ1 term that are commonly ignored. The remaining deviation is more difficult to address. We find that the influence of the scaling relation errors on asteroseismically derived values of log g are well within uncertainties. The influence of the errors on mass and radius estimates is small for main sequence and subgiants, but can be quite large for red giants.
Original language | English |
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Article number | 11 |
Journal | The Astrophysical Journal |
Volume | 843 |
Early online date | 26 Jun 2017 |
DOIs | |
Publication status | Published - Jul 2017 |
Keywords
- Astrophysics - Solar and Stellar Astrophysics
- stars: fundamental parameters
- stars: interiors
- stars: oscillations
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Dive into the research topics of 'Changing the νmax Scaling Relation: The Need For a Mean Molecular Weight Term'. Together they form a unique fingerprint.Projects
- 1 Finished
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Asteroseismology and Helioseismology at Birmingham and Queen Mary
Chaplin, B. (Principal Investigator), Elsworth, Y. (Co-Investigator) & Miglio, A. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/04/15 → 30/09/18
Project: Research Councils