Spectra disentangling applied to the Hyades binary θ2 Tauri AB: new orbit, orbital parallax and component properties

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Table 4

θ² Tau AB radial velocities.

HJD +	Orbital	RV_A	(C −	RV_B	(C −	Set
2 400 000	phase	(km s^-1)	FDB)	(km s^-1)	FDB)

47 844.67396	0.68250	+3.217 ± 1.208	+0.034	−4.264 ± 5.456	−0.038	1
47 942.61109	0.37842	−9.362 ± 1.130	+0.022	+12.409 ± 5.235	−0.021	1
47 957.58553	0.48483	−5.451 ± 0.747	+0.035	+7.225 ± 3.442	−0.038	1
48 142.89616	0.80161	+11.265 ± 0.773	+0.001	−14.933 ± 3.593	+0.005	1
48 145.81918	0.82238	+13.202 ± 0.701	−0.012	−17.498 ± 3.262	+0.023	1
48 158.82114	0.91477	+26.806 ± 0.697	−0.185	−35.530 ± 3.274	+0.251	1
48 162.77544	0.94286	+34.391 ± 0.730	−0.341	−45.585 ± 3.533	+0.457	1
48 168.69863	0.98495	+45.848 ± 0.747	−0.343	−60.771 ± 4.261	+0.459	1
48 189.80317	0.13492	−18.328 ± 0.557	−0.051	+24.293 ± 2.647	+0.076	1
48 191.74188	0.14869	−17.862 ± 0.557	−0.045	+23.676 ± 2.646	+0.069	1
48 193.75274	0.16298	−17.347 ± 0.557	−0.039	+22.994 ± 2.644	+0.061	1
48 194.82415	0.17060	−17.066 ± 0.557	−0.036	+22.620 ± 2.632	+0.056	1
48 198.64843	0.19777	−16.039 ± 0.605	−0.025	+21.259 ± 2.855	+0.041	1
48 199.72259	0.20540	−15.749 ± 0.605	−0.022	+20.874 ± 2.855	+0.037	1
48 204.81905	0.24162	−14.376 ± 0.726	−0.010	+19.055 ± 3.395	+0.021	1
48 206.74581	0.25531	−13.862 ± 0.605	−0.005	+18.374 ± 2.829	+0.015	1
48 221.70076	0.36158	−9.970 ± 0.532	+0.019	+13.215 ± 2.474	−0.017	1
48 225.71561	0.39010	−8.939 ± 0.531	+0.024	+11.847 ± 2.461	−0.024	1
48 226.67264	0.39690	−8.692 ± 0.869	+0.025	+11.521 ± 4.016	−0.025	1
48 227.69380	0.40416	−8.429 ± 0.531	+0.027	+11.172 ± 2.455	−0.028	1
48 230.72959	0.42573	−7.644 ± 0.530	+0.029	+10.132 ± 2.449	−0.030	1
48 232.73228	0.43996	−7.122 ± 0.530	+0.031	+9.440 ± 2.447	−0.033	1
48 234.69604	0.45392	−6.607 ± 0.530	+0.032	+8.757 ± 2.446	−0.035	1
48 252.69842	0.58184	−1.570 ± 0.529	+0.041	+2.080 ± 2.343	−0.047	1
48 257.64582	0.61699	−0.016 ± 0.529	+0.041	+0.022 ± 2.300	−0.046	1
48 258.58654	0.62368	+0.291 ± 0.601	+0.040	−0.386 ± 2.609	−0.045	1
48 278.54634	0.76551	+8.384 ± 1.415	+0.020	−11.112 ± 6.565	−0.019	1
48 279.54381	0.77260	+8.910 ± 0.700	+0.018	−11.809 ± 3.249	−0.016	1
48 289.66074	0.84449	+15.569 ± 1.134	−0.029	−20.636 ± 5.319	+0.045	1
48 290.50641	0.85049	+16.279 ± 0.653	−0.037	−21.576 ± 3.066	+0.056	1
48 310.51233	0.99265	+41.466 ± 0.561	+0.158	−54.962 ± 3.007	−0.204	1
48 325.50344	0.09918	−19.195 ± 0.654	−0.061	+25.443 ± 3.111	+0.090	1
48 344.51304	0.23425	−14.654 ± 1.132	−0.011	+19.423 ± 5.296	+0.023	1
48 350.50753	0.27685	−13.060 ± 0.629	+0.001	+17.311 ± 2.940	+0.007	1
48 992.52662	0.83891	+14.945 ± 0.604	−0.018	−19.809 ± 2.827	+ 0.030	1
49 004.66293	0.92514	+29.323 ± 0.628	−0.212	−38.867 ± 2.953	+ 0.286	1
49 050.57611	0.25139	−14.006 ± 0.895	−0.003	+18.564 ± 4.186	+ 0.012	1
49 267.89835	0.79564	+10.761 ± 0.917	+ 0.015	−14.264 ± 4.262	−0.013	1
49 286.83598	0.93021	+30.671 ± 0.905	−0.228	−40.655 ± 4.269	+ 0.307	1
49 313.76324	0.12155	−18.728 ± 0.920	−0.053	+24.823 ± 4.375	+ 0.079	1
49 329.74569	0.23512	−14.617 ± 0.943	−0.007	+19.375 ± 4.414	+ 0.018	1
49 345.71675	0.34860	−10.435 ± 0.894	+ 0.021	+13.831 ± 4.165	−0.020	1
49 358.67549	0.44069	−7.092 ± 1.075	+ 0.035	+9.399 ± 4.960	−0.039	1
49 371.67152	0.53303	−3.575 ± 1.011	+ 0.044	+4.740 ± 4.575	−0.050	1
49 379.58646	0.58927	−1.244 ± 0.842	+ 0.046	+1.649 ± 3.713	−0.053	1
49 389.64176	0.66073	+2.090 ± 0.866	+ 0.045	−2.770 ± 3.819	−0.052	1
49 404.46549	0.76606	+8.432 ± 0.845	+ 0.027	−11.177 ± 3.920	−0.029	1
49 979.79433	0.85423	+16.758 ± 0.484	−0.021	−22.212 ± 2.272	+ 0.035	1
49 990.88998	0.93307	+31.490 ± 0.503	−0.227	−41.740 ± 2.380	+ 0.306	1
49 992.84490	0.94696	+35.800 ± 0.579	−0.317	−47.453 ± 2.839	+ 0.425	1
49 993.92196	0.95462	+38.478 ± 0.581	−0.382	−51.002 ± 3.017	+ 0.511	1
49 999.87944	0.99695	+36.151 ± 0.680	+ 0.307	−47.917 ± 3.334	−0.402	1
50 000.83846	0.00376	+24.852 ± 0.660	+ 0.636	−32.941 ± 3.141	−0.837	1
50 001.80220	0.01061	+12.628 ± 0.700	+ 0.690	−16.737 ± 3.258	−0.907	1
50 002.85421	0.01809	+ 1.670 ± 0.842	+ 0.517	−2.214 ± 3.714	−0.678	1
50 004.84002	0.03220	−10.464 ± 0.701	+ 0.192	+13.871 ± 3.265	−0.246	1
50 006.86013	0.04655	−15.840 ± 0.653	+ 0.030	+20.996 ± 3.083	−0.031	1
50 007.84894	0.05358	−17.204 ± 0.654	−0.007	+22.803 ± 3.104	+ 0.018	1
50 008.83881	0.06061	−18.095 ± 0.581	−0.031	+23.984 ± 2.761	+ 0.050	1
50 009.86739	0.06792	−18.678 ± 0.581	−0.047	+24.758 ± 2.762	+ 0.071	1
50 020.84972	0.14596	−17.951 ± 0.557	−0.040	+23.794 ± 2.646	+ 0.062	1
50 021.84975	0.15307	−17.701 ± 0.581	−0.037	+23.462 ± 2.761	+ 0.058	1
50 026.75460	0.18792	−16.406 ± 0.629	−0.022	+21.746 ± 2.970	+ 0.037	1
50 027.82940	0.19556	−16.116 ± 0.581	−0.018	+21.361 ± 2.742	+ 0.033	1
50 138.48966	0.98189	+ 46.222 ± 1.407	−0.466	−61.267 ± 8.022	+ 0.622	1
50 140.56345	0.99662	+ 36.590 ± 0.605	+ 0.265	−48.499 ± 2.979	−0.346	1
50 143.47618	0.01732	+2.621 ± 0.746	+ 0.520	−3.474 ± 3.329	−0.681	1
50 146.47843	0.03865	−13.453 ± 0.677	+ 0.093	+ 17.831 ± 3.169	−0.115	1
50 152.51706	0.08156	−19.179 ± 0.775	−0.058	+ 25.422 ± 3.688	+ 0.086	1
53 657.52560	0.98743	+44.782 ± 0.257	−0.463	−59.357 ± 1.464	+ 0.618	2
53 667.67700	0.05957	−18.027 ± 0.097	−0.070	+23.893 ± 0.460	+ 0.101	2
53 686.56880	0.19381	−16.168 ± 0.097	−0.005	+21.431 ± 0.457	+ 0.016	2
53 690.58560	0.22235	−15.083 ± 0.097	+ 0.005	+19.992 ± 0.454	+ 0.002	2
53 711.46230	0.37070	−9.619 ± 0.145	+ 0.042	+12.751 ± 0.674	−0.047	2
53 724.36150	0.46236	−6.272 ± 0.096	+ 0.055	+8.314 ± 0.445	−0.064	2
53 728.37360	0.49087	−5.199 ± 0.072	+ 0.057	+6.891 ± 0.333	−0.068	2
53 739.43640	0.56948	−2.069 ± 0.120	+ 0.063	+2.743 ± 0.537	−0.076	2
53 747.35580	0.62575	+0.414 ± 0.240	+ 0.066	−0.549 ± 1.044	−0.080	2
53 749.39120	0.64021	+1.099 ± 0.120	+ 0.067	−1.457 ± 0.525	−0.081	2
53 759.35790	0.71103	+4.857 ± 0.096	+ 0.065	−6.438 ± 0.437	−0.079	2
53 777.34740	0.83886	+14.995 ± 0.121	+ 0.038	−19.876 ± 0.565	−0.044	2
53 787.30460	0.90962	+25.804 ± 0.123	−0.040	−34.202 ± 0.584	+ 0.059	2
53 793.32650	0.95241	+37.826 ± 0.101	−0.221	−50.137 ± 0.510	+ 0.298	2
53 801.33250	0.00930	+14.200 ± 0.145	+ 0.041	−18.821 ± 0.676	−0.048	2
53 801.34800	0.00941	+14.010 ± 0.145	+ 0.031	−18.570 ± 0.676	−0.035	2
53 801.36060	0.00950	+13.857 ± 0.169	+ 0.057	−18.367 ± 0.789	−0.069	2
53 801.37240	0.00958	+13.713 ± 0.169	+ 0.047	−18.177 ± 0.788	−0.056	2
53 801.38420	0.00966	+13.571 ± 0.145	+ 0.038	−17.987 ± 0.676	−0.043	2
53 802.30060	0.01618	+3.621 ± 0.830	+ 0.055	−4.800 ± 3.755	−0.066	2
53 802.34250	0.01647	+3.228 ± 0.265	+ 0.072	−4.278 ± 1.196	−0.088	2
53 802.36410	0.01663	+3.028 ± 0.708	+ 0.075	−4.013 ± 3.197	−0.092	2
53 803.27240	0.02308	−4.125 ± 0.145	+ 0.021	+5.467 ± 0.662	−0.020	2
53 803.28070	0.02314	−4.179 ± 0.120	+ 0.038	+5.539 ± 0.552	−0.043	2
53 803.29010	0.02321	−4.241 ± 0.120	+ 0.024	+5.621 ± 0.552	−0.024	2
53 803.29870	0.02327	−4.297 ± 0.349	+ 0.015	+5.695 ± 1.599	−0.013	2
53 803.30710	0.02333	−4.351 ± 0.145	+ 0.032	+5.768 ± 0.662	−0.034	2
53 803.31560	0.02339	−4.406 ± 0.145	+ 0.024	+5.840 ± 0.664	−0.024	2
53 803.32400	0.02345	−4.461 ± 0.120	+ 0.016	+5.912 ± 0.554	−0.014	2
53 803.33260	0.02351	−4.516 ± 0.265	+ 0.031	+5.986 ± 1.220	−0.033	2
53 803.34150	0.02357	−4.572 ± 0.651	+ 0.021	+6.061 ± 2.997	−0.019	2
53 806.29510	0.04456	−15.442 ± 0.194	−0.056	+20.468 ± 0.913	+ 0.083	2
53 806.30400	0.04462	−15.458 ± 0.194	−0.059	+20.489 ± 0.913	+ 0.087	2
53 806.31280	0.04469	−15.474 ± 0.194	−0.055	+20.511 ± 0.913	+ 0.082	2
53 806.32120	0.04475	−15.489 ± 0.218	−0.057	+20.532 ± 1.028	+ 0.085	2
53 806.32980	0.04481	−15.506 ± 0.218	−0.060	+20.552 ± 1.028	+ 0.088	2
53 806.33840	0.04487	−15.522 ± 0.266	−0.056	+20.573 ± 1.256	+ 0.082	2
53 806.34690	0.04493	−15.537 ± 0.266	−0.058	+20.593 ± 1.256	+ 0.085	2
53 806.35260	0.04497	−15.547 ± 0.691	−0.055	+20.608 ± 3.262	+ 0.082	2
53 806.37650	0.04514	−15.590 ± 0.378	−0.059	+20.665 ± 1.784	+ 0.087	2
53 806.38500	0.04520	−15.605 ± 0.266	−0.061	+20.684 ± 1.256	+ 0.089	2
54 905.41312	0.85467	+16.850 ± 0.069	+ 0.017	−22.340 ± 0.388	−0.021	3
54 905.42068	0.85472	+16.860 ± 0.062	+ 0.020	−22.350 ± 0.348	−0.023	3
54 905.42824	0.85478	+16.870 ± 0.078	+ 0.020	−22.360 ± 0.442	−0.020	3
54 906.39330	0.86163	+17.750 ± 0.081	+ 0.011	−23.530 ± 0.456	−0.011	3
54 906.39728	0.86166	+17.760 ± 0.078	+ 0.018	−23.540 ± 0.443	−0.016	3
54 906.40149	0.86169	+17.760 ± 0.078	+ 0.014	−23.540 ± 0.443	−0.012	3
55 079.70896	0.09318	−19.240 ± 0.095	−0.058	+25.500 ± 0.537	+ 0.083	3
55 079.71082	0.09319	−19.240 ± 0.095	−0.058	+25.500 ± 0.537	+ 0.083	3
55 080.70855	0.10028	−19.180 ± 0.095	−0.059	+25.420 ± 0.537	+ 0.085	3
55 080.71054	0.10030	−19.180 ± 0.095	−0.059	+25.420 ± 0.537	+ 0.085	3
55 080.71256	0.10031	−19.170 ± 0.119	−0.050	+25.420 ± 0.671	+ 0.085	3
55 082.70400	0.11446	−18.900 ± 0.095	−0.044	+25.050 ± 0.537	+ 0.066	3
55 082.70576	0.11447	−18.900 ± 0.095	−0.044	+25.050 ± 0.537	+ 0.066	3

Notes. The radial velocities (RV) were derived relatively to the center of mass (γ = 39.3 km s^-1) with the code FDBinary. (C-FDB) refers to the differences in the sense Combined astrometric–spectroscopic solution – FDBinary orbit. The uncertainties were computed as explained in Sect. 5.1. The heliocentric julian day (HJD) and orbital phase corresponding to each radial velocity are also included. Set 1: CfA data; Set 2: Elodie data; Set 3: Hermes data.

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