The Gaia DR3 parallax approach was used to estimate the absolute parameters of 2375δScuti stars from the ASAS catalog.The selected stars have a variety of observational characteristics,with a higher than 80%probabili...
support from the National Natural Science Foundation of China(NSFC)(Nos.12005124 and 12147215);support from the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(STIP)(No.2020L0528);the Applied Basic Research Programs of Natural Science Foundation of Shanxi Province(No.202103021223320)。
In this work,the pulsation analysis is performed on 83 high-amplitudeδScuti stars(HADS),which have been observed by the Transiting Exoplanet Survey Satellite.The results show that 49 of these HADS show single-mode pu...
support from the National Natural Science Foundation of China(NSFC,Grant Nos.11403088,11873081,U2031209,11833002,12090040,12090042 and 12003020);partially supported by the Open Project Program of the Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences。
KIC 10417986 is a short orbital period(0.0737 day)ellipsoidal variable star with aδSct andγDor hybrid pulsation component discovered by Kepler.The ground-based spectroscopic observations were carried out in the wint...
support from the Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi(STIP)(No.2020L0528);the Applied Basic Research Programs of Natural Science Foundation of Shanxi Province(No.202103021223320);support from the National Natural Science Foundation of China(NSFC)(Nos.12005124 and 12147215);support from the NSFC(Nos.11833002,12090040,and 12090042)。
Stellar structure and evolution theory is one of the bases in modern astronomy.Stellar inner structures and their evolutionary states can be precisely tested by asteroseismology,since the inner information is brought ...
the Scientific and Technological Research Council(TUBITAK)under Grant No.120F330;Funding for the TESS mission is provided by the NASA Explorer Program。
The existence of pulsating stars in eclipsing binaries has been known for decades.These types of objects are extremely valuable systems for astronomical studies as they exhibit both eclipse and pulsation variations.Th...
supported by the National Natural Science Foundation of China(Grant No.U2031209)。
This paper reports analysis of an eclipsing binary system KIC 5197256 with aδSct variable component.Utilizing light-curve modeling,several stellar parameters are derived,e.g.,temperature,mass,and mass ratio.The O-C d...
supported by the Department of Physics,Payame Noor University,Tehran,Iran。
New V-band CCD observations of variable star V2455 Cyg were performed during two nights in September 2017. According to all times of maximum light and new maxima, the O-C curve was analyzed.The period changes of V2455...
supported by the National Natural Science Foundation of China(Nos.11933008,11703080 and 11803084);the Yunnan Natural Science Foundation(No.2018FB006)。
ASAS J174406+2446.8 was originally found as aδScuti-type pulsating star with the period P=0.189068 d by ASAS survey.However,the LAMOST stellar parameters reveal that it is far beyond the red edge of pulsational insta...
supported by the National Natural Science Foundation of China (Grant Nos. 11803012, 11333002, 11673011 and 11503009);the National Defense Science and Engineering Bureau Civil Space Flight Advanced Research Project (D030201)
This paper reports on the discovery that an eclipsing binary system, EPIC 202843107, has aδ Scuti variable component. The phased light curve from the Kepler space telescope presents a detached configuration. The bina...