Spectroscopic orbits and variations of RS Ophiuchi

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Volume 497 / No 3 (April III 2009)

A&A, 497 3 (2009) 815-825

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Table 2:

Orbital solutions of RS Oph.
Component	P	K	$\gamma_0$	e	$\omega$	T₀⁽¹⁾	$\Delta$ $\phi^{(2)}$	$a\sin i$	f(M)
	[days]	[ $\rm km~s^{-1}$ ]	[ $\rm km~s^{-1}$ ]		[deg]	[JD 24...]		[AU]	[ $M_\odot$ ]
M-giant
Our data	452.8 $\pm$ 1.5	19.5 $\pm$ 0.7	-38.0 $\pm$ 0.4	0⁽³⁾		51 055.50		0.81	0.35
Our data	453.2 $\pm$ 1.2	20.0 $\pm$ 0.7	-38.7 $\pm$ 0.4	0.10 $\pm$ 0.03	120 $\pm$ 16	51 205.95		0.83	0.37
DK+F+ours	453.6 $\pm$ 0.4	17.5 $\pm$ 0.6	-39.5 $\pm$ 0.4	0⁽³⁾		45 156.94	0.00	0.73	0.25
DK+F+ours	453.6⁽³⁾	18.6 $\pm$ 0.6	-40.2 $\pm$ 0.4	0.14 $\pm$ 0.03	135 $\pm$ 11	44 873.23		0.77	0.29
cF-abs
Our data⁽⁵⁾	453.6⁽³⁾	8.0 $\pm$ 1.2	-32.5 $\pm$ 0.9	0⁽³⁾		50 493.51	-0.24	0.33	0.024
	453.6⁽³⁾	10.2 $\pm$ 1.8	-31.8 $\pm$ 0.8	0.52 $\pm$ 0.14	200 $\pm$ 13	50 750.54		0.36	0.031
DK+ours	453.6⁽³⁾	3.2 $\pm$ 0.9	-34.7 $\pm$ 0.7	0⁽³⁾		45 041.11	-0.26	0.13	0.001
	453.6⁽³⁾	8.3 $\pm$ 2.8	-34.6 $\pm$ 0.7	0.82 $\pm$ 0.07	344 $\pm$ 16	46 799.95		0.20	0.005
Emission wings
H $\alpha$ wings	456.0 $\pm$ 6.1	8.6 $\pm$ 1.2	-35.4 $\pm$ 0.70	0⁽³⁾		50 376.11
H $\alpha$ wings	453.6⁽³⁾	8.5 $\pm$ 1.2	-35.4 $\pm$ 0.70	0⁽³⁾		50 385.80	0.53	0.42	0.029
H $\alpha$ wings⁽⁴⁾	453.6⁽³⁾	10.0 $\pm$ 2.3	-36.6 $\pm$ 1.5	0⁽³⁾				0.35	0.047

Combined orbital solutions ( $P=453.6\pm0.4$ days).

Component	K	$\gamma_0$	e	$\omega$	T₀⁽¹⁾	$a\sin i$	$M\sin^3$ i
	[ $\rm km~s^{-1}$ ]	[ $\rm km~s^{-1}$ ]		[deg]	[JD24...]	[AU]	[M $_\odot$ ]
DK+F+ours	17.1 $\pm$ 0.6	-38.7 $\pm$ 0.4	0⁽³⁾		45 612.05	0.71	0.35
H $\alpha$ wings	10.1 $\pm$ 1.2					0.42	0.59
DK+F+ours	17.2 $\pm$ 0.7	-38.7 $\pm$ 0.4	0.04 $\pm$ 0.03	87 $\pm$ 44	45 722.37	0.72	0.35
H $\alpha$ wings	10.2 $\pm$ 1.2					0.42	0.59
DK+F+ours⁽⁴⁾	16.4 $\pm$ 1.5	-38.4 $\pm$ 0.8	0⁽³⁾		0.00	0.68	0.35
H $\alpha$ wings⁽⁴⁾	10.4 $\pm$ 1.8					0.43	0.55

Notes: ⁽¹⁾ T₀ is the time of maximum velocity (circular orbits) or the time of periastron passage (elliptical orbits); ⁽²⁾ $\Delta\phi$ = ( $T_0 - T_{0, \rm giant})/P$ ; ⁽³⁾ assumed; ⁽⁴⁾ binned data; ⁽⁵⁾ solutions using only the measurements of the Ti II absorption lines.

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