Absolute dimensions of eclipsing binaries - XXVIII. BK Pegasi and other F-type binaries: Prospects for calibration of convective core overshoot

J. V. Clausen; S. Frandsen; H. Bruntt; E. H. Olsen; B. E. Helt; K. Gregersen; D. Juncher; P. Krogstrup

doi:10.1051/0004-6361/201014266

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Volume 516 (June-July 2010)

A&A, 516 (2010) A42

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Table 10:

Astrophysical data for BK Peg.
	Primary	Secondary
Absolute dimensions:
$M/M_{\odot}$	$1.414 \pm 0.007$	$1.257 \pm 0.005$
$R/R_{\odot}$	$1.988 \pm 0.008$	$1.474 \pm 0.017$
$\log g$ (cgs)	$3.992 \pm 0.004$	$4.201 \pm 0.010$
$v \sin i$ ^a (kms^-1)	$16.6 \pm 0.2$	$13.4 \pm 0.2$
$v_{\rm sync}$ ^b (kms^-1)	$18.3 \pm 0.1$	$13.6 \pm 0.2$
$v_{\rm psync}$ ^c (kms^-1)	$18.3 \pm 0.1$	$13.6 \pm 0.2$
$v_{\rm peri}$ ^d (kms^-1)	$18.5 \pm 0.1$	$13.7 \pm 0.2$
Photometric data:
V^e	$10.473 \pm 0.009$	$11.080 \pm 0.014$
(b-y)^e	$0.363 \pm 0.007$	$0.360 \pm 0.008$
m₁^e	$0.144 \pm 0.013$	$0.139 \pm 0.016$
c₁^e	$0.466 \pm 0.014$	$0.436 \pm 0.017$
E(b-y)	$0.044 \pm 0.015$
$T_{\mbox{\scriptsize eff}}~$	$6265 \pm 85$	$6320 \pm 90$
$M_{\mbox{\scriptsize bol}}~$	$2.90 \pm 0.06$	$3.51 \pm 0.07$
$\log L/L_{\odot}$	$0.74 \pm 0.02$	$0.49 \pm 0.03$
B.C.	-0.01	-0.01
M_V	$2.91 \pm 0.06$	$3.52 \pm 0.07$
V₀-M_V	$7.37 \pm 0.09$	$7.37 \pm 0.10$
Distance (pc)	$298 \pm 12$	$298 \pm 13$
Abundance:
$[{\rm Fe/H}]$	$-0.12 \pm 0.07$

Notes. ^(a) Observed rotational velocity. ^(b) Equatorial velocity for synchronous rotation. ^(c) Equatorial velocity for pseudo-synchronous rotation. ^(d) Refers to periastron velocity. ^(e) Not corrected for interstellar absorption/reddening. Bolometric corrections (BC) by Flower (1996) have been assumed, together with $T_{\rm eff\odot} = 5780$ K, $BC_{\odot} = -0.08$ , and $M_{bol\odot} = 4.74$ .

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