文章基本信息

标题：The envelope of the power spectra of over a thousand δ Scuti stars
其他标题：TheT̅eff − νmaxscaling relation★
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作者：S. Barceló Forteza ; T. Roca Cortés ; R. A. García 等
期刊名称：Astronomy & Astrophysics
印刷版ISSN：0004-6361
电子版ISSN：1432-0746
出版年度：2018
卷号：614
DOI：10.1051/0004-6361/201731803
语种：English
出版社：EDP Sciences
摘要：CoRoT andKeplerhigh-precision photometric data allowed the detection and characterization of the oscillation parameters in stars other than the Sun. Moreover, thanks to the scaling relations, it is possible to estimate masses and radii for thousands of solar-type oscillating stars. Recently, aΔν−ρrelation has been found forδScuti stars. Now, analysing several hundreds of this kind of stars observed with CoRoT andKepler, we present an empiric relation between their frequency at maximum power of their oscillation spectra and their effective temperature. Such a relation can be explained with the help of theκ-mechanism and the observed dispersion of the residuals is compatible with they being caused by the gravity-darkening effect.
关键词：Key wordsenasteroseismologystars: variables: delta Scutistars: oscillations