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- W3191559586 abstract "Based on the two-minutes TESS data, we analyzed intrinsic oscillations of the primary component and identified seven confident independent $delta$ Scuti frequencies ($f_1$, $f_2$, $f_3$, $f_4$, $f_7$, $f_{11}$, and $f_{12}$). Both of single-star evolutionary models and mass-accreting models are computed to reproduce the $delta$ Scuti freqiencies. Fitting results of them match well with each other. The stellar parameters of the primary star yielded by asteroseismology are $M$ = $1.92^{+0.10}_{-0.02}$ $M_{odot}$, $Z$ = 0.011$^{+0.006}_{-0.001}$, $R$ = $2.068^{+0.050}_{-0.007}$ $R_{odot}$, $log g$ = $4.090^{+0.010}_{-0.002}$, $T_{rm eff}$ = $8346^{+244}_{-320}$ K, $L$ = $18.65^{+3.31}_{-2.82}$ $L_{odot}$, which match well with the dynamic ones by the binary model. Furthermore, our asteroseismic results show that OO Dra is another Algol system that has just undergone the rapid mass-transfer stage. Fitting results of single-star evlutionary models indicate that the pulsator is helium-poor star with an age of 8.22$^{+0.12}_{-1.33}$ Myr, and the further mass-accreting models show that the primary star looks like an almost unevolved star formed by an extremely helium-poor mass accretion in Case A evolutionary scenario." @default.
- W3191559586 created "2021-08-16" @default.
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- W3191559586 date "2021-08-06" @default.
- W3191559586 modified "2023-09-27" @default.
- W3191559586 title "OO Dra: an Algol-type binary formed through an extremely helium-poor mass accretion revealed by asteroseismology" @default.
- W3191559586 hasPublicationYear "2021" @default.
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