@misc{10481/77395,
year = {2022},
month = {10},
url = {https://hdl.handle.net/10481/77395},
abstract = {In this paper, we study the pulsation properties of KIC 3440495 using Kepler and TESS data. A Fourier analysis of
the light curve reveals 24 pulsation modes as well as 29 frequencies associated with rotation. The rotation
frequency is derived to be frot = 2.322909(2) day−1, and the rotational modulation is determined to be caused by
starspots. A large frequency separation of Δν = 54.5 μHz is found by using a Fourier transform, the
autocorrelation function, a histogram of frequency differences, and an échelle diagram. We use the large
separation to estimate the refined stellar parameters of the star to be v = [239, 279] km s−1, M= [1.5, 1.65] Me,
Requator = [2.03, 2.30] Re, Rpolar = [1.72, 1.78] Re, and ω = [0.61, 0.77]. The phase modulations of the pulsating
frequencies show a long-term trend which may be attributed to an orbital effect of a binary system; hence, the star
may be a fast rotating pulsator in a binary system. KIC 3440495 has an amplitude spectrum similar to Altair, and is
identified as a potential sister of Altair. Based on studies of Altair, KIC 3330495 is presumably a young star at a
similar evolutionary stage.},
organization = {National Natural Science Foundation of China (NSFC)	12003060	
U2031209},
organization = {Natural Science Foundation of Xinjiang Uygur Autonomous Region	2020D01B59},
organization = {Chinese Academy of Sciences (CAS) "Light of West China" Program	2021-XBQNXZ-029},
organization = {"FEDER/Junta de Andalucia-Consejeria de Economia y Conocimiento" by Universidad de Granada	E-FQM-041-UGR18},
organization = {"Programas Estatales de Generacion de Conocimiento y Fortalecimiento Cientifico y Tecnologico del Sistema de I+D+i y de I+D+i Orientada a los Retos de la Sociedad" from the Spanish Ministry of Science, Innovation and Universities (MCIU)	PID2019-107061GB-C63},
organization = {State Agency for Research through the "Center of Excellence Severo Ochoa" award from the Spanish Ministry of Science, Innovation and Universities (MCIU)	SEV-2017-0709},
publisher = {Institute of Physics},
title = {KIC 3440495: A Rapidly Rotating δ Scuti-γ Doradus Hybrid Pulsator in a Binary System},
doi = {10.3847/1538-4357/ac8c30},
author = {Ma, Shuguo and García Hernández, Antonio and Pascual Granado, Javier},
}