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相关论文: Toward mode selection in Delta Scuti stars: Regula…

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Pulsators on and near the main sequence show period and amplitude changes that are too large to be the product of stellar evolution. The multiperiodic Delta Scuti stars are well suited to study these changes. This requires a very large…

太阳与恒星天体物理 · 物理学 2017-03-15 M. Breger , M. H. Montgomery , P. Lenz , A. A. Pamyatnykh

The results of a multisite photometric campaign of Theta2 Tau are reported. This binary system consists of evolved and main-sequence A stars inside the instability strip. The 12th Delta Scuti Network campaign included 152 hours of…

天体物理学 · 物理学 2009-11-07 M. Breger , A. A. Pamyatnykh , W. Zima , R. Garrido , G. Handler , P. Reegen

We have searched for photometric variability in 95 Vir, a fast rotating, chromospherically active early F-type star, which was observed in the framework of Campaign 6 of the Kepler K2 mission. Available literature information on 95 Vir were…

太阳与恒星天体物理 · 物理学 2017-04-19 Ernst Paunzen , Stefan Huemmerich , Klaus Bernhard , Przemek Walczak

We have used NASA's TESS mission to study catalogued delta Scuti stars. We examined TESS light curves for 434 stars, including many for which few previous observations exist. We found that 62 are not delta Scuti pulsators, with most instead…

太阳与恒星天体物理 · 物理学 2026-02-18 Natascha Barac , Timothy R. Bedding , Simon J. Murphy , Daniel R. Hey

We aim at studying the theoretical properties of the regular spacings found in the oscillation spectra of delta Scuti stars. We performed a multi-variable analysis covering a wide range of stellar structure and seismic properties and model…

太阳与恒星天体物理 · 物理学 2014-02-13 J. C. Suárez , A. García Hernández , A. Moya , C. Rodrigo , E. Solano , R. Garrido , J. R. Rodón

We present the results of a three-year photometric study of the $\delta$ Scuti star UV Trianguli. Our data sets consist of 9378 differential measurements in Johnson V together with a few data collected into the Str\"{o}mgren {\em…

天体物理学 · 物理学 2016-08-16 Ai-Ying Zhou , Zong-Li Liu , E. Rodríguez

The standard assumption in interpretation of stellar oscillation spectra from photometry is that the excited mode have low angular degrees, typically $\ell< 3$. Considering the case of FG Vir, the $\delta$ Scuti star with the richest known…

天体物理学 · 物理学 2010-12-09 J. Daszynska-Daszkiewicz , W. A. Dziembowski , A. A. Pamyatnykh

We present statistical characteristics of 1,578 {\delta} Scuti stars including nearby field stars and cluster member stars within the Milky Way. We obtained 46% of these stars (718 stars) from the works done by Rodr\'{i}guez and collected…

太阳与恒星天体物理 · 物理学 2015-06-15 Seo-Won Chang , Pavlos Protopapas , Dae-Won Kim , Yong-Ik Byun

In a photometric variability survey of 131 stars with B < 14 mag, we have found four new Delta Scuti stars. We were sensitive to oscillation amplitudes as low as a few mmag. The detection rate of short-period (P < 0.1 d) pulsating variable…

天体物理学 · 物理学 2009-11-07 J. L. Sokoloski , Lars Bildsten , R. Chornock , Alexei V. Filippenko

We have explored a sample of suspected A-type binaries in a systematic way, both spectroscopically and photometrically. Due to their location in the H-R diagram, indications of pulsation and/or chemical peculiarities among these suspected…

People can diagnose the interiors of stars by sensing their pulsations. Pulsation modes, which are determined by the internal state and structure of a star, are typically considered stable over short timescales. These independent pulsation…

太阳与恒星天体物理 · 物理学 2024-02-13 Jia-Shu Niu , Hui-Fang Xue

Observations from space missions have allowed significant progress in many scientific domains due to the absence of atmospheric noise contributions and having uninterrupted data sets. In the context of asteroseismology, this has been…

太阳与恒星天体物理 · 物理学 2023-08-16 Julieta Sánchez Arias , Orlagh Louise Creevey , Eric Chapellier , Bernard Pichon

A high-accuracy multisite campaign was carried out from 2002 January to May with a photometric coverage of 398 hours at five observatories. The concentration on a few selected sites gives better consistency and accuracy than collecting…

We present an analysis of the pulsation behaviour of the Delta Scuti stars 7 Aql (HD 174532) and 8 Aql (HD 174589) -- a new variable star -- observed in the framework of STEPHI XII campaign during 2003 June--July. 183 hours of high…

We present results of a search for identification of modes responsible for the six most significant frequency peaks detected in the rapidly rotating SPB star $\mu$ Eridani. All published and some unpublished photometric data are used in our…

太阳与恒星天体物理 · 物理学 2015-06-23 J. Daszyńska-Daszkiewicz , W. A. Dziembowski , M. Jerzykiewicz , G. Handler

A new observational study of the Herbig Ae star VV Ser has been performed in order to detect and accurately measure pulsation frequencies in the $\delta$ Scuti range. As it belongs to the continuous field of view of the asteroseismological…

The potential of photometric methods for the identification of l, the degree of spherical surface harmonic of a pulsating star, is investigated with special emphasis on Stromgren photometry applied to delta Scuti and gamma Dor variables.…

天体物理学 · 物理学 2007-05-23 Rafael Garrido

The current knowledge of the abundance pattern in delta Scuti stars is based on the analysis of just a few field stars. We aim to determine the general chemical properties of the atmospheres of delta Scuti stars based on a statistically…

天体物理学 · 物理学 2009-11-13 L. Fossati , K. Kolenberg , P. Reegen , W. Weiss

$\delta$ Scuti stars are hot, rapid rotators and are a poorly understood class of pulsators. Asteroseismology provides the only means with which to probe their interior dynamics. However, their complex and unexplained oscillation patterns…

太阳与恒星天体物理 · 物理学 2025-05-06 K. H. Singh , S. K. Panda , S. M. Hanasoge , S. Dhanpal

As part of the NASA Kepler Guest Observer program, we requested and obtained long-cadence data on about 2700 faint (magnitude 14-16) Kepler stars with effective temperatures and surface gravities that lie near or within the pulsation…

太阳与恒星天体物理 · 物理学 2014-04-01 Joyce A. Guzik , P. A. Bradley , J. Jackiewicz , K. Uytterhoeven , K. Kinemuchi