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• W3203165514 endingPage "A63" @default.
• W3203165514 startingPage "A63" @default.
• W3203165514 abstract "We analyse the pulsating behaviour of TIC 308396022, based on observations by the TESS mission. The star is a high-amplitude δ Sct star that shows a very rich amplitude spectrum using the 3-yr light curve. Among these frequencies, the strongest peak of f 1 = 13.20362567(12) d −1 is identified as the radial fundamental mode, and we also find the first and second overtones ( f 2 and f 3 ). In the low-frequency range (< 2.5 d −1 ), 22 peaks are identified as gravity modes, which show a regular period spacing of about 2460 s and have an angular degree of l = 1. The period spacing pattern does not show a significant downward trend, suggesting the star is rotating slowly. We note that this is a δ Sct– γ Dor hybrid star containing a high-amplitude radial fundamental mode and a regular g -mode period spacing pattern. With the O − C analysis, we find the star shows a significant time delay, implying that the star has a companion and it is likely to be a white dwarf. The history of possible mass transfer provides a great opportunity for testing the current theories of binary evolution, mass transfer, and pulsation." @default.
• W3203165514 created "2021-10-11" @default.
• W3203165514 creator A5001661267 @default.
• W3203165514 creator A5009377606 @default.
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• W3203165514 creator A5069508826 @default.
• W3203165514 creator A5087042381 @default.
• W3203165514 creator A5088835757 @default.
• W3203165514 date "2021-11-01" @default.
• W3203165514 modified "2023-10-18" @default.
• W3203165514 title "TIC 308396022: <i>δ</i> Scuti–<i>γ</i> Doradus hybrid with large-amplitude radial fundamental mode and regular <i>g</i>-mode period spacing" @default.
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