中文
相关论文

相关论文: Pulsation and Rotation of the EL CVn-type Eclipsin…

200 篇论文

We report the ${\it Kepler}$ photometry of KIC 11401845 displaying multiperiodic pulsations, superimposed on binary effects. Light-curve synthesis represents that the binary star is a short-period detached system with a very low mass ratio…

太阳与恒星天体物理 · 物理学 2017-02-08 Jae Woo Lee , Kyeongsoo Hong , Seung-Lee Kim , Jae-Rim Koo

We report the discovery and analysis of 36 new eclipsing EL CVn-type binaries, consisting of a core helium-composition pre-white dwarf and an early-type main-sequence companion, more than doubling the known population of these systems. We…

太阳与恒星天体物理 · 物理学 2018-02-14 J. van Roestel , T. Kupfer , R. Ruiz-Carmona , P. J. Groot , T. A. Prince , K. Burdge , R. Laher , D. L. Shupe , E. Bellm

CW Cep is an early B-type eclipsing binary with mass measurement precisions better than 1 \%. We report the discovery of pulsation signatures in the TESS time-series data of the system observed during Sectors 17 and 18. Our binary modeling…

太阳与恒星天体物理 · 物理学 2020-12-23 Jae Woo Lee , Kyeongsoo Hong

Times of minima of eclipsing binary KIC 7023917 show quasiperiodic anti-symmetric deviations from the calculated one with an amplitude of up to 10 minutes and a period of 200 - 300 days. These changes correlate with the observed variations…

太阳与恒星天体物理 · 物理学 2024-09-24 Pavol Gajdoš , Štefan Parimucha , Marek Skarka , Matúš Kamenec , Jozef Lipták , Raine Karjalainen

Stars that are both pulsating and eclipsing offer an important opportunity to better understand many of the physical phenomena that occur in stars, because it is possible to measure the pulsation frequencies of stars for which the masses…

太阳与恒星天体物理 · 物理学 2023-11-28 Zachary Jennings , John Southworth , Kresimir Pavlovski , Timothy Van Reeth

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…

太阳与恒星天体物理 · 物理学 2017-07-05 F. Kahraman Aliçavuş , E. Soydugan , B. Smalley , J. Kubát

We present the first light curves and pulsation analysis results for V729 Aql and two newly discovered eclipsing binaries, namely USNO-A2.0 0975-17281677 and USNO-A2.0 1200-03937339. Frequency search was applied on the residuals of their…

太阳与恒星天体物理 · 物理学 2014-07-28 Alexios Liakos , Pavel Cagas

KIC 10661783 is an eclipsing binary that shows Delta Sct-like oscillations. More than 60 pulsation frequencies have been detected in its light curve as observed by the Kepler satellite. We want to determine the fundamental stellar and…

太阳与恒星天体物理 · 物理学 2013-08-20 H. Lehmann , J. Southworth , A. Tkachenko , K. Pavlovski

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…

太阳与恒星天体物理 · 物理学 2022-04-13 John Southworth , Dominic M. Bowman

1SWASP J162545.15-043027.9 (WASP 1625-04) has been announced as one of EL CVn candidates showing total primary eclipses and ellipsoidal variations. This paper presents the absolute properties of the binary star, based on our high-resolution…

太阳与恒星天体物理 · 物理学 2022-01-19 Jae Woo Lee , Kyeongsoo Hong , Jang-Ho Park

We present a comprehensive photometric study of the pulsating, eclipsing binary OO Dra. Simultaneous B- and V-band photometry of the star was carried out on 14 nights. Revised orbital period and a new ephemeris were derived from the data.…

太阳与恒星天体物理 · 物理学 2015-06-22 X. B. Zhang , L. C. Deng , J. F. Tian , K. Wang , J. J. Sun , Q. L. Liu , H. Q. Xin , Q. Zhou , Z. Z. Yan , Z. Q. Luo , C. Q. Luo

Pulsating stars in eclipsing binaries are very important to understand stellar interior structures through astroseismology because their absolute parameters such as the masses and radii can be determined in high precision based on…

太阳与恒星天体物理 · 物理学 2024-12-02 Xiang-Dong Shi , Sheng-Bang Qian , Lin-Jia Li

We report the first $BV$ light curves and high-resolution spectra of the post-mass transfer binary star WASP 0131+28 to study the absolute properties of extremely low-mass white dwarfs. From the observed spectra, the double-lined radial…

太阳与恒星天体物理 · 物理学 2020-07-08 Jae Woo Lee , Jae-Rim Koo , Kyeongsoo Hong , Jang-Ho Park

The A/F-type stars and pulsators ($\delta$ Scuti-$\gamma$ Dor) are in a critical regime where they experience the transition from radiative to convective transport of energy in their envelopes. Such stars can pulsate in both gravity and…

太阳与恒星天体物理 · 物理学 2017-12-01 Anya , Samadi Gh. , Patricia Lampens , Davood M. Jassur

Pulsating stars in eclipsing binary systems offer a unique possibility to empirically identify pulsation modes using the geometric effect of the eclipses on the pulsation signals. Here we explore the $\delta$ Scuti type pulsations in the…

太阳与恒星天体物理 · 物理学 2025-01-29 A. Bókon , I. B. Bíró , A. Derekas

In this paper, we present TESS photometry and high-resolution spectra of the short-period Algol EW Boo. We obtained double-lined radial velocities (RVs) from the time-series spectra and measured the effective temperature of the primary star…

太阳与恒星天体物理 · 物理学 2022-09-20 Hye-Young Kim , Kyeongsoo Hong , Chun-Hwey Kim , Jae Woo Lee , Min-Ji Jeong , Jang-Ho Park , Mi-Hwa Song

Pulsating low-mass white dwarf stars are white dwarfs with stellar masses between 0.30~M$_{\odot}$ and 0.45~M$_{\odot}$ that show photometric variability due to gravity-mode pulsations. Within this mass range, they can harbour both a…

太阳与恒星天体物理 · 物理学 2021-12-15 A. D. Romero , G. R. Lauffer , A. G. Istrate , S. G. Parsons

New photometric observations of NSVS 01286630 were performed and two sets of four-color (B, V , Rc, Ic) light curves (LCs) were obtained. Using the 2013 version of the Wilson-Devinney (W-D) code, we analyzed these data. The photometric…

太阳与恒星天体物理 · 物理学 2018-09-19 Bin Zhang , Sheng-bang Qian , Wen-ping Liao , Li-ying Zhu , Ai-jun Dong , Qi-jun Zhi

Aims. We present new photometry of the faint and poorly studied cataclysmic variable SDSS J152419.33+220920.0, analyze its light curve and provide an accurate ephemeris for this system. Methods. Time-resolved CCD differential photometry was…

太阳与恒星天体物理 · 物理学 2015-06-15 R. Michel , J. Echevarria , J. V. Hernandez-Santisteban

Eclipsing binaries are crucial for understanding stellar physics, allowing detailed studies of stellar masses, radii, and orbital dynamics. Recent space missions like the Transiting Exoplanet Survey Satellite (TESS) have significantly…

太阳与恒星天体物理 · 物理学 2024-11-20 L. W. IJspeert , A. Tkachenko , C. Johnston , C. Aerts