Towards accurate component properties of the Hyades binary θ2 Tau

Communications in Asteroseismology

Lampens, P.¹  Frémat, Y.¹  Hensberge, H.¹  De Cat, P.¹ 

关键词: Metabolic Syndrome;    Childhood Obesity;    Elementary School Children;   

DOI  :  10.1553/cia148s65

学科分类：天文学(综合)

来源: Verlag der Oesterreichischen Akademie der Wissenschaften

【 摘 要 】

theta2 Tau is a well-detached, "single-lined" Hyadesbinary consisting of two midtype A stars which both lie in the lowerCepheid instability strip. As a matter of fact, component A is aclassical delta Scuti star showing a complex pattern of pulsationswhile component B might also be a delta Scuti pulsator (Breger et al.2002). We acquired new high-resolution, high signal-to-noise spectra inorder to determine accurate properties for the components of thissystem. Combining both spectroscopy and long-baseline opticalinterferometry, we were able to derive the orbital parallax and thecomponent masses with unprecedented accuracy. Such constraints on thephysical properties of the components are needed for a deepunderstanding of the pulsation physics. We also believe thattheta2 Tau is an appropriate target to explore, in anempirical way, the possible interaction(s) between pulsation on the onehand and rotation and binarity on the other hand.

【 授权许可】

Unknown