Physical elements of the eclipsing binary δ Orionis

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Volume 520 (September-October 2010)

A&A, 520 (2010) A89

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Table 3:

Trial orbital and light-curve solutions aimed at determination of improved ephemeris for the binary.
	`FOTEL`	`PHOEBE`	`PHOEBE`
Parameter	RV	LC	LC&RV
$P_{\rm sidereal}$	5 $.\!\!^{\rm d}$ 732436(15)	5 $.\!\!^{\rm d}$ 732436(3)	5 $.\!\!^{\rm d}$ 732436(1)
$P_{\rm anom}$	5 $.\!\!^{\rm d}$ 732824(15)	5 $.\!\!^{\rm d}$ 732798(3)	5 $.\!\!^{\rm d}$ 732821
$T_{\rm periastr.}$	2.780(46)	2.7241(96)	2.7775(34)
$T_{\rm min.~I}$	1.984	1.9641	1.9701
e	0.0910(37)	0.0858(41)	0.0883(26)
$\omega$ ( $^\circ$ )	149.2(3.0)	145.6(3.9)	149.1(2.3)
$\dot\omega$ ( $^\circ$ /d)	0.00425(16)	0.00397(29)	0.00422(11)
No. of obs.	824	635	824 + 635

Notes. The epochs of periastron passage are in HJD-2454000. The rms errors of the last two quoted digits are given in brackets after the respective values.

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