Properties and nature of Be stars - 27. Orbital and recent long-term variations of the Pleiades Be star Pleione = BU Tauri

J. Nemravová; P. Harmanec; J. Kubát; P. Koubský; L. Iliev; S. Yang; J. Ribeiro; M. Šlechta; L. Kotková; M. Wolf; P. Škoda

doi:10.1051/0004-6361/200913885

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Volume 516 (June-July 2010)

A&A, 516 (2010) A80

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Table 3:

Basic physical properties of BU Tau as a single-line binary based on elliptical-orbit solution for the H $\alpha$ emission RVs - (cf. Table 2).
i	M₂/M₁	M₂	A	$A_{\rm peri.}$
( $^\circ$ )		( $M_{\odot}$ )	( $R_{\odot}$ )	( $R_{\odot}$ )
90	0.0876	0.254	223.5	53.0
70	0.0936	0.272	223.9	53.1
50	0.1164	0.338	225.5	53.4

Notes. The estimates are derived assuming the primary mass of M₁=2.9 $M_{\odot}$ , A and $A_{\rm peri.}$ denote the semi-major axis and the binary separation at periastron, respectively.

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