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Related papers: $\delta$ Scuti pulsations in the bright Pleiades e…

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This work presents an extensive analysis of the properties of three southern semi-detached eclipsing binaries hosting a pulsating component, namely HM Pup, V632 Sco, and TT Vel. Systematic multi-filtered photometric observations were…

Solar and Stellar Astrophysics · Physics 2022-07-27 A. Liakos , D. J. W. Moriarty , M. G. Blackford , J. F. West , P. Evans , C. M. Moriarty , S. M. Sweet

Although pulsations of $\delta$ Scuti type are not expected among Ap stars from a theoretical point of view, previous observations of the known $\delta$ Scuti star HD21190 indicated a spectral classification F2 III SrEuSi:, making it the…

Solar and Stellar Astrophysics · Physics 2017-07-26 E. Niemczura , R. -D. Scholz , S. Hubrig , S. P. Järvinen , M. Schöller , I. Ilyin , F. Kahraman Aliçavuş

We present Kepler satellite photometry of KIC 10661783, a short-period binary star system which shows total eclipses and multi-periodic delta Scuti pulsations. A frequency analysis of the eclipse-subtracted light curve reveals at least 68…

Pulsations and binarity are both common features of massive stars. The study of pulsating massive stars in eclipsing binary systems hold great potential for constraining stellar structure and evolution theory. However, prior to the all-sky…

Solar and Stellar Astrophysics · Physics 2022-04-13 John Southworth , Dominic M. Bowman

A comparison between the oscillation frequencies of six multi-periodic Delta Scuti stars of the Pleiades cluster and the eigenfrequencies of rotating stellar models that match the corresponding stellar parameters has been carried out. The…

Astrophysics · Physics 2009-11-11 L. Fox Machado , F. Perez Hernandez , J. C. Suarez , E. Michel , Y. Lebreton

HD 34282 has been found to pulsate during a systematic search for short-term photometric variability in Herbig Ae/Be stars with the goal of determining the position and size of the pre-main sequence instability strip. Simultaneous Stromgren…

Astrophysics · Physics 2009-11-10 P. J. Amado , A. Moya , J. C. Suarez , S. Martin-Ruiz , R. Garrido , E. Rodriguez , C. Catala , M. J. Goupil

HD172189 is a spectroscopic eclipsing binary system with a rapidly-rotating pulsating delta Scuti component. It is also a member of the open cluster IC4756. These combined characteristics make it an excellent laboratory for asteroseismic…

We present a photometric, spectroscopic, asteroseismic, and evolutionary analysis of the Algol-type eclipsing binary KIC 12268220. We find the O'Connell effect and anticorrelated eclipse timing variations in the Kepler light curve,…

Solar and Stellar Astrophysics · Physics 2020-08-12 Kaiming Cui , Zhao Guo , Qing Gao , Juanjuan Ren , Junbo Zhang , Yutao Zhou , Jifeng Liu

Context: Several hundred candidate hybrid pulsators of type A-F have been identified from space-based observations. Their large number allows both statistical analyses and detailed investigations of individual stars. This offers the…

We report results of spectroscopic and photometric observations of ten delta Scuti stars and one eclipsing binary in the open cluster NGC1817, and of ten delta Scuti stars and two other variables in the open cluster NGC7062. For all targets…

Solar and Stellar Astrophysics · Physics 2009-07-17 J. Molenda-Zakowicz , T. Arentoft , S. Frandsen , F. Grundahl

We analyse TESS light curves for 70 southern $\lambda$ Boo stars to identify binaries and to determine which of them pulsate as $\delta$ Scuti stars. We find two heartbeat stars and two eclipsing binaries among the sample. We calculate that…

Solar and Stellar Astrophysics · Physics 2020-05-20 S. J. Murphy , E. Paunzen , T. R. Bedding , P. Walczak , D. Huber

Eclipsing binaries with a $\delta$ Sct component are powerful tools to derive the fundamental parameters and probe the internal structure of stars. In this study, spectral analysis of 6 primary $\delta$ Sct components in eclipsing binaries…

Solar and Stellar Astrophysics · Physics 2017-07-05 F. Kahraman Aliçavuş , E. Soydugan , B. Smalley , J. Kubát

We have discovered both intermediate-order gravity mode and low-order pressure mode pulsation in the same star, HD 209295. It is therefore both a Gamma Doradus and a Delta Scuti star, which makes it the first pulsating star to be a member…

The study of detached eclipsing binaries is one of the most powerful ways to investigate the properties of individual stars and stellar systems. We present preliminary masses, radii and effective temperatures for the eclipsing binary WW…

Astrophysics · Physics 2009-11-10 J. Southworth , B. Smalley , P. F. L. Maxted , P. B. Etzel

The multi-color CCD photometric study of 27 Delta Scuti stars is presented. By using approximately three years of photometric observations, we obtained the times of maxima and magnitude changes during the observation time interval for each…

We use four years of Kepler photometry to study the non-eclipsing spectroscopic binary KIC 10080943. We find both components to be $\gamma$ Doradus/$\delta$ Scuti hybrids, which pulsate in both p and g modes. We present an analysis of the g…

Solar and Stellar Astrophysics · Physics 2015-10-14 M. A. Keen , T. R. Bedding , S. J. Murphy , V. S. Schmid , C. Aerts , A. Tkachenko , R. -M. Ouazzani , D. W. Kurtz

We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and $\delta$ Scuti-type pulsations with a mode frequency of 21.09533…

In this paper, we analyze the light variation of KIC 8840638 using high-precision time-series data from $Kepler$ mission. The analysis reveals this target is a new Algol-type eclipsing binary system with a $\delta$ Scuti component, not a…

Solar and Stellar Astrophysics · Physics 2021-01-15 Tao-Zhi Yang , Zhao-Yu Zuo , Jun-Hui Liu , Xiao-Ya Sun

The combined strength of asteroseismology and empirical stellar basic parameter determinations for in-depth asteroseismic analysis of massive pulsators in eclipsing binaries shows great potential for treating the challenging and mysterious…

Solar and Stellar Astrophysics · Physics 2024-03-20 Christian I. Eze , Gerald Handler