Solar-like oscillations and ellipsoidal variations in TESS observations of the binary 12 Boötis
Solar-like oscillations and ellipsoidal variations in TESS observations of the binary 12 Boötis
复制标题
双星 12 Boátis 的 TESS 观测中的类太阳振荡和椭球变化
DOI:
10.1093/mnras/stac2212
复制
发表时间:
2022
影响因子:
4.8
通讯作者:
Ball W
中科院分区:
文献类型:
--
作者:
Ball W
Binary stars in which oscillations can be studied in either or both components can provide powerful constraints on our understanding of stellar physics. The bright binary 12 Boötis (12 Boo) is a particularly promising system because the primary is roughly 60 per cent brighter than the secondary despite being only a few per cent more massive. Both stars have substantial surface convection zones and are therefore, presumably, solar-like oscillators. We report here the first detection of solar-like oscillations and ellipsoidal variations in the TESS light curve of 12 Boo. Though the solar-like oscillations are not clear enough to unambiguously measure individual mode frequencies, we combine global asteroseismic parameters and a precise fit to the spectral energy distribution (SED) to provide new constraints on the properties of the system that are several times more precise than values in the literature. The SED fit alone provides new effective temperatures, luminosities, and radii of,, andfor 12 Boo A and,, andfor 12 Boo B. When combined with our asteroseismic constraints on 12 Boo A, we obtain an age of, which is consistent with that of 12 Boo B.
DOI:
10.4095/315645
发表时间:
1966
期刊:
--
影响因子:
--
作者:
D. Observatory
通讯作者:
D. Observatory
DOI:
10.1051/978-2-7598-1876-1
发表时间:
2016
期刊:
Research Notes of the AAS
影响因子:
--
作者:
A. Baglin
通讯作者:
A. Baglin