Theoretical properties of regularities in the oscillation spectra of A-F main-sequence stars

被引：1

作者：

Carlos Suarez, Juan ^{[1
]}

Hernandez, Antonio Garcia ^{[2
]}

Moya, Andres ^{[3
]}

Rodrigo, Carlos ^{[3
,4
]}

Solano, Enrique ^{[3
,4
]}

Garrido, Rafael ^{[1
]}

Rodon, Jose R. ^{[1
]}

机构：

[1] CSIC, Inst Astrofis Andalucia, CP 3004, Granada, Spain

[2] Univ Porto, Ctr Astrofis, Rua Estrelas 4150-762, P-4150762 Porto, Portugal

[3] CSIC, Dept Astrofis CAB, INTA, Madrid 28691, Spain

[4] Spanish Virtual Observ, Madrid, Spain

来源：

PRECISION ASTEROSEISMOLOGY | 2014年 / 9卷 / 301期

关键词：

stars: evolution; oscillations (including pulsations); stars: interiors; stars: variables: delta Scuti; ROTATING POLYTROPIC STARS; ACOUSTIC-OSCILLATIONS; PATTERNS;

D O I：

10.1017/S1743921313014142

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the theoretical properties of the regular spacings found in the oscillation spectra of delta Scuti stars. A linear relation between the large separation and the mean density is predicted to be found in the low-frequency domain (i.e. radial orders spanning from 1 to 8, approximately) of the main-sequence delta Scuti stars' oscillation spectrum. This implies an independent direct measure of the average density of delta Scuti stars, analogous to that of the Sun, and places tight constraints on the mode identification and hence on the stellar internal structure and dynamics, and allows a determination the radii of planets orbiting around delta Scuti stars with unprecedented precision. This opens the way for studying the evolution of regular patterns in pulsating stars, and its relation to stellar structure and evolution.

引用

页码：89 / 92

页数：4

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