2019MNRAS.483.5026L


C.D.S. - SIMBAD4 rel 1.7 - 2020.08.09CEST02:01:07

2019MNRAS.483.5026L - Mon. Not. R. Astron. Soc., 483, 5026-5041 (2019/March-2)

Spectroscopic and astrometric radial velocities: Hyades as a benchmark.

LEAO I.C., PASQUINI L., LUDWIG H.-G. and DE MEDEIROS J.R.

Abstract (from CDS):

We study the accuracy of spectroscopic radial velocities (RVs) by comparing spectroscopic and astrometric RVs for stars of the Hyades open cluster. We obtained High-Accuracy Radial velocity Planet Searcher (HARPS) spectra for a large sample of Hyades stars and combined them with accurate astrometric RVs based on Hipparcos and Gaia data. After cleaning the sample from binaries, RV variables, and outliers, 71 stars remained. The distribution of the observed RV difference (between spectroscopic and astrometric) is skewed and depends on the star right ascension. This is consistent with the Hyades cluster rotating at 42.3 m s–1pc–1. The two Hyades giants in the sample show, as predicted by gravitational redshift (GR), a spectroscopic RV that is blue-shifted with respect to the dwarfs, and the empirical GR slope is of 626 ± 131 m s–1, in agreement with the theoretical prediction. The difference between spectroscopic and astrometric RVs is close to zero when considering the Gaia-based RVs corrected for cluster rotation. The mean difference is of -33 m s–1 and the median is of -16 m s–1, with a standard deviation of 347 m s–1 being close to the expected cluster velocity dispersion. We also determine a new value of the cluster centroid spectroscopic RV: 39.36 ± 0.26 km s–1. We finally discuss other phenomena that can influence the RV difference, such as cluster expansion, stellar rotation, stellar activity, general relativity, and Galactic potential. Clusters within the reach of current telescopes are expected to show differences of several hundreds m s–1, depending on their position in the Galaxy.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Open clusters and associations: individual: Hyades - Stars: late-type - Techniques: radial velocities - Astrometry

Status at CDS:   Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 142

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Number of rows : 142

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 14127 PM* 02 17 19.7581888156 +05 21 38.670780565   9.07 8.51     F7/8V 25 0
2 BD+17 455 PM* 02 55 16.2855708047 +17 53 30.157855318   9.52 8.80     K0 20 0
3 V* BW Ari BY* 02 57 46.6726058921 +29 39 41.266403609 10.24 9.778   8.10   K0V 69 0
4 * 47 Ari PM* 02 58 05.2213180567 +20 40 07.437303565   6.230   5.6   F0V(e) 170 0
5 V* BZ Cet BY* 03 00 02.8120517172 +07 44 59.117432323 9.635 8.908 7.955 7.436 6.994 K2.5Vk 114 0
6 BD+25 522 TT* 03 17 22.86105 +26 18 54.0950   12.51   10.7   K4V 38 0
7 BD+07 499 PM* 03 20 29.1951266889 +08 27 16.020294865   10.766   9.321   K4/5V 37 0
8 LP 355-64 Ro* 03 22 28.1397630012 +27 09 21.790174595   12.460   10.599   K7V 38 0
9 BD+23 465 PM* 03 32 50.0789017819 +23 41 31.873847085   9.719   8.3   G5 74 0
10 StKM 1-382 PM* 03 33 05.2981953506 +04 57 29.239821297   13.239 11.772     K4/5 16 0
11 BD+20 598 ** 03 37 34.9777508195 +21 20 35.449863956   10.282 9.362     K0V 63 1
12 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 2990 0
13 LP 533-57 PM* 03 48 11.8635323754 +07 08 46.476748377   12.189   10.375   K7V 42 0
14 HD 283066 PM* 03 51 03.1149697972 +23 54 13.142478403   11.364 10.118 9.821   K6V 68 0
15 HD 24357 PM* 03 53 10.0460920095 +17 19 37.509727343   6.294 5.946 5.745 5.545 F4V 168 0
16 HD 286363 PM* 03 55 01.4413073954 +12 29 08.110370466   11.180 10.094     K0 53 0
17 HD 285252 PM* 03 55 06.5011604336 +16 59 54.519700128   9.870 8.964 8.472 8.049 K0 85 0
18 HD 25102 PM* 03 59 40.4966295142 +10 19 49.266646656   6.762 6.340 6.097 5.860 ~ 132 0
19 HD 25202 PM* 04 00 48.7658986189 +18 11 38.400272628   6.212 5.865     F4V 72 0
20 HD 285348 PM* 04 03 39.0408158530 +19 27 18.043699697   11.162 10.095     K2 56 0
21 HG 7-88 PM* 04 05 25.6704977866 +19 26 31.746338325   12.750 11.400 10.94   K7 43 0
22 HD 285367 PM* 04 05 39.6750094705 +17 56 15.762174280   10.190 9.291     K0 60 0
23 HD 25825 PM* 04 06 16.1277831435 +15 41 53.234613641   8.416 7.811 7.484 7.169 G0V 164 0
24 HD 285507 PM* 04 07 01.2254128574 +15 20 06.108426912   11.670 10.473     K4 58 0
25 HD 26015 ** 04 07 41.98340 +15 09 46.0260           F3V 143 0
26 HD 285482 PM* 04 07 43.1988938145 +16 31 07.644792849   10.934 9.924     K0 66 0
27 HD 286554 PM* 04 08 26.6673715353 +12 11 30.646523283   12.599 11.269     K5 50 0
28 HD 26090 ** 04 08 54.3475281919 +29 11 26.208033749   8.914 8.240     G0V+G5V 50 0
29 HD 286572 PM* 04 09 49.3490750629 +09 18 19.772416682   11.291   9.4   K4 51 0
30 HD 26345 PM* 04 10 42.3629962013 +18 25 23.714440814   7.005 6.576 6.329 6.095 F6V 131 0
31 * 45 Tau PM* 04 11 20.2823319709 +05 31 22.987536222   6.057 5.699 5.487 5.284 F4V 224 0
32 HD 284163A RS* 04 11 56.2240577351 +23 38 11.048435474   10.470 9.392     K0 93 0
33 HD 26756 PM* 04 14 25.6502208510 +14 37 30.119616339   9.125 8.419 8.039 7.682 G5V 182 0
34 V* V1309 Tau BY* 04 14 27.2545515447 +12 26 07.132723657   8.682 8.030 7.673 7.341 G0 146 0
35 HD 26737 PM* 04 14 30.4190422398 +22 27 06.609929977   7.494 7.045     F5V 90 0
36 HD 26736 BY* 04 14 32.3143718674 +23 34 29.798017740   8.711 8.047 7.691 7.356 G5V 190 0
37 HD 26784 PM* 04 14 34.3408001832 +10 42 04.995568324   7.606 7.080 6.791 6.511 F8V 174 0
38 HD 286589 ** 04 14 51.9364731462 +13 03 17.842744408   11.890 10.681 10.34   K4 54 0
39 HD 285625 PM* 04 15 10.4083073596 +14 23 54.439393735   12.920 11.585 11.13   K5 62 0
40 HD 285590 PM* 04 15 33.6881348768 +15 42 22.563557503   12.135 10.931 10.53   K7 49 0
41 HD 26874 SB* 04 15 42.4372981629 +20 49 11.278242352 8.790 8.510 7.810     G4V 75 0
42 * 48 Tau El* 04 15 46.2844127105 +15 24 02.506391510   6.705 6.300 6.070 5.847 F5V 166 0
43 V* V984 Tau BY* 04 16 33.4774691433 +21 54 26.882967639   9.944 9.125     ~ 147 0
44 HD 27130 EB* 04 17 38.9458416476 +16 56 52.210019080   9.075 8.315 8.79   G8V 226 0
45 HD 285690 BY* 04 18 19.2715240400 +16 05 17.992757273   10.532 9.548 9.015 8.557 K0 127 0
46 V* V893 Tau BY* 04 18 57.9744787270 +19 54 24.125770975   9.345 8.597 8.192 7.829 G9V 125 0
47 HD 27282 PM* 04 19 08.0080652475 +17 31 29.118551040 9.46 9.157 8.427 8.034 7.675 G8V 166 0
48 * gam Tau ** 04 19 47.6038491 +15 37 39.515422 5.46 4.64 3.65 4.83   G9.5IIIabCN0.5 517 0
49 * 55 Tau ** 04 19 54.85720 +16 31 21.3283   7.401 6.853     F8V 231 0
50 * h Tau dS* 04 19 57.7045549280 +14 02 06.739482030   5.856 5.568 5.407 5.250 F0IV 206 0
51 HD 27406 BY* 04 20 12.9666887102 +19 14 00.523124676   8.016 7.444 7.131 6.826 F9V+ 174 0
52 HD 27524 PM* 04 21 31.6489558768 +21 02 23.558359736   7.215 6.779 6.531 6.283 F5V 154 0
53 HD 27534 PM* 04 21 32.2683661417 +18 25 03.301253447   7.234 6.787 6.532 6.279 F5V 148 0
54 HD 27561 PM* 04 21 34.7950093588 +14 24 35.245998570   6.999 6.578 6.338 6.099 F5IV-V 208 0
55 * 60 Tau dS* 04 22 03.5181535031 +14 04 37.917221958   6.054 5.710 7.05 5.38 A3m 252 0
56 HD 286770 PM* 04 22 25.6835742020 +11 18 20.605384262   11.054 9.820     K2 57 0
57 * del Tau SB* 04 22 56.1010361735 +17 32 33.055967140 5.56 4.74 3.76 5.56   G9.5IIICN0.5 497 0
58 HD 27732 SB* 04 23 22.3298068729 +21 22 44.753474020   9.628 8.846     ~ 121 0
59 V* V989 Tau BY* 04 23 25.2802710304 +15 45 47.247630096   11.885 10.472 10.19   K5V 102 0
60 HD 27731 PM* 04 23 30.4003605036 +24 24 19.472881541   7.625 7.159 6.905 6.643 ~ 100 0
61 HD 27771 PM* 04 23 32.3331702437 +14 40 13.722038843   9.963 9.097 8.631 8.222 G5 149 0
62 HD 286734 PM* 04 23 54.4125056103 +14 03 07.575609956   12.159 11.020 10.53   K4 69 0
63 * del02 Tau PM* 04 24 05.7612291035 +17 26 38.877118086 5.07 4.95 4.80 4.64 4.57 A2Vs 218 0
64 HD 27808 PM* 04 24 14.5735497717 +21 44 10.484870739   7.646 7.125 6.830 6.550 F8V 178 0
65 V* V990 Tau BY* 04 24 16.9397523417 +18 00 10.515757018   11.035 9.966 9.364 8.864 K5V 104 0
66 HD 27848 PM* 04 24 22.2733632887 +17 04 44.239701147   7.405 6.947 6.698 6.445 ~ 147 0
67 HD 27859 BY* 04 24 28.3272372657 +16 53 10.202274804   8.382 7.790     G2V 204 0
68 HG 7-200 ** 04 24 48.0345410826 +15 52 29.025832592   13.060 11.623 11.44   K7V 55 0
69 HD 27901 PM* 04 24 57.1263296659 +19 02 31.228698674   6.354 5.965 5.736 5.506 F4V 116 0
70 * 70 Tau SB* 04 25 37.3208691208 +15 56 27.717270305   6.951 6.439 7.75   F7V 258 0
71 HD 27990 SB* 04 25 47.5862729819 +18 01 01.895505133   9.928 8.989 8.469 8.011 K2V 93 0
72 HD 27989 BY* 04 25 51.72716 +18 51 50.6155   8.219 7.527     G4V 176 0
73 HD 28033 SB* 04 26 18.4986266367 +21 28 13.557737195   7.897 7.334     F8V 142 0
74 HD 28099 BY* 04 26 40.1215422118 +16 44 48.884181598 8.98 8.78 8.12 7.56 7.23 G2+V 371 0
75 HD 286798 ** 04 26 42.82285 +12 41 11.6835   11.848 10.501 9.98   K2 60 0
76 HD 286820 ** 04 26 48.2672215061 +10 52 15.941127850   10.477 9.432     K0 46 0
77 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2664 0
78 HD 286789 PM* 04 26 54.3424323974 +13 08 17.436537483   11.620 10.469 10.13   K7 63 0
79 V* V993 Tau BY* 04 27 35.8913866973 +15 35 21.092605003   7.949 7.404 7.102 6.805 ~ 207 0
80 HD 28237 PM* 04 27 46.0745623833 +11 44 11.108366342   8.066 7.482     F8 130 0
81 HD 285830 PM* 04 27 47.0353503191 +14 25 03.899722196   10.402 9.475 8.966 8.526 K0 104 0
82 HD 28226 PM* 04 28 00.7833328503 +21 37 11.652517024   5.996 5.711 5.553 5.406 Am 131 0
83 HD 28258 PM* 04 28 04.4336082048 +13 52 04.581177543   9.860 9.032 9.03   G5V 112 0
84 * 76 Tau PM* 04 28 23.4056518148 +14 44 27.396017837   6.227 5.892 5.694 5.501 F0IV 133 0
85 * eps Tau ** 04 28 36.9988174 +19 10 49.544603 5.42 4.54 3.53     G9.5IIICN0.5 543 1
86 V* V918 Tau BY* 04 28 37.2159666702 +19 44 26.482689542   9.316 8.580 8.182 7.816 G5 120 0
87 HD 28344 BY* 04 28 48.2983169461 +17 17 07.686115512 8.57 8.456 7.837 7.498 7.180 G2V 255 0
88 * b Tau PM* 04 28 50.1638027833 +13 02 51.375403335   5.226 5.014 4.907 4.795 kA5hF0VmF0 174 0
89 HD 28406 PM* 04 29 30.3505336847 +17 51 47.395473227 7.36 7.352 6.890 6.631 6.373 F6V 171 0
90 HD 283704 PM* 04 29 30.7658053030 +26 40 17.571803843 12.79 9.985 9.182     G5 96 0
91 HD 285773 BY* 04 29 31.6063189199 +17 53 35.461078275 10.28 9.761 8.934 8.486 8.093 K0V 174 0
92 HD 28462 PM* 04 29 57.7281254013 +16 40 22.227276252   10.051 9.069 9.12   K1V 121 0
93 HD 28483 PM* 04 30 17.9777149991 +19 50 25.913280997   7.583 7.087     F6V 145 0
94 HD 28527 dS* 04 30 33.6330527888 +16 11 38.462112418   4.975 4.764 6.52   A6IV 179 0
95 * 81 Tau SB* 04 30 38.8891812919 +15 41 30.762581514   5.739 5.454 6.76   Am 192 0
96 HD 28608 PM* 04 30 57.1713987199 +10 45 06.362771222   7.491 7.015 6.741 6.479 F7V 112 0
97 HD 28593 PM* 04 31 15.6942612546 +20 07 59.409641235   9.327 8.572 8.169 7.801 G8V 112 0
98 HD 28635 SB* 04 31 29.3444023836 +13 54 12.322586634   8.300 7.746 7.445 7.147 F9V 126 0
99 * 85 Tau PM* 04 31 51.7593427946 +15 51 05.835960545   6.342 5.998 5.799 5.604 F1.5Vn 115 0
100 HD 285876 PM* 04 31 52.4722287818 +15 29 58.133228299   12.300 11.000 10.622   K0V 79 0
101 HD 28736 PM* 04 32 04.8082392593 +05 24 36.150896355   6.783 6.352 6.104 5.874 ~ 140 0
102 HD 284552 PM* 04 33 37.1805948888 +21 09 03.064149281   11.920 10.726 10.261   K7V 53 0
103 HD 285837 PM* 04 33 41.9269728826 +19 00 50.523070236   11.926 10.733     K7 45 0
104 HD 28911 PM* 04 33 46.6421338634 +13 15 06.788779219   7.031 6.597 6.351 6.108 ~ 111 0
105 HD 28992 BY* 04 34 35.3101760915 +15 30 16.643497474   8.530 7.898 7.556 7.226 ~ 187 0
106 V* V1116 Tau dS* 04 36 29.1480883846 +23 20 27.031439616   6.418 6.019     F2 103 0
107 HD 29225 PM* 04 36 40.7179502876 +15 52 09.677553504   7.074 6.619 6.371 6.115 ~ 125 0
108 HD 29310 BY* 04 37 31.9781330179 +15 08 47.331434720   8.153 7.545     G0 156 0
109 * c Tau PM* 04 38 09.4616564927 +12 30 38.991822704 4.52 4.39 4.27 4.13 4.08 A6V 175 0
110 HD 29499 PM* 04 39 06.1590758485 +07 52 15.558265082   5.623 5.365 5.226 5.093 A5m 104 0
111 HD 286929 PM* 04 39 50.9725939027 +12 43 42.521864924   11.077 9.992 9.368 8.857 K7 69 0
112 HD 284574 PM* 04 40 05.8433191784 +23 18 16.363836993   10.211 9.402     K0 78 0
113 StKM 1-512 PM* 04 46 18.7936087421 +03 38 10.812153696   12.189 10.922     K4/5 42 0
114 HD 30246 PM* 04 46 30.3864259988 +15 28 19.348842103   8.954 8.280 7.914 7.569 G5 109 1
115 HD 30264 ** 04 46 49.4586928457 +17 44 54.002002151   10.643 9.581     K3 42 0
116 HD 284653 PM* 04 47 26.1880735336 +23 03 03.321631840   11.799 10.674 10.471   K4V 39 0
117 HD 283869 PM* 04 47 41.8005286607 +26 09 00.821338732   11.777 10.603     K7 42 0
118 HD 30505 ** 04 49 03.5217039672 +18 38 28.490141947   9.789 8.947 8.492 8.089 K1V 85 0
119 HD 30589 PM* 04 49 32.1249664135 +15 53 19.474471734   8.324 7.739 7.412 7.111 F8 109 0
120 HD 30738 EB* 04 50 48.5434455463 +16 12 37.623048440   7.797 7.266     ~ 119 0
121 HD 30810 ** 04 51 12.5284595938 +11 04 04.881592537   7.322 6.753     F6V 182 1
122 HD 30809 PM* 04 51 23.2149187922 +15 26 00.474500594   8.418 7.886 7.591 7.302 F8 78 0
123 HD 284930 PM* 04 52 23.5315139170 +18 59 48.866464004   11.351 10.280     K0 48 0
124 HD 31236 PM* 04 54 58.3611062835 +19 29 07.395516453   6.640 6.347 6.172 6.005 F1V(n) 93 0
125 HD 31609 PM* 04 57 49.5055252970 +14 00 07.881489455   9.622 8.892     G5 85 0
126 * 101 Tau PM* 04 59 44.3215855444 +15 55 00.238515439   7.220 6.747     F5V 120 0
127 BD+04 810 PM* 05 00 48.8864889576 +04 43 59.202451494   10.67 9.74     K2 34 0
128 HD 32347 PM* 05 03 07.6578243018 +13 43 50.412068300   9.372 8.596 8.182 7.810 K0 92 0
129 HD 240648 PM* 05 06 17.9892077081 +17 48 59.099415584   9.552 8.818     K0 51 0
130 * h Ori SB* 05 09 19.6456259298 +09 49 46.496469787 5.83 5.67 5.43 5.25 5.13 A2m 234 0
131 HD 242780 PM* 05 20 25.4232282765 +11 36 35.348882467   9.74 8.97     K0 38 0
132 * 122 Tau PM* 05 37 03.7354898170 +17 02 25.182041452   5.775 5.525     F0V 78 0
133 M 37 OpC 05 52 18 +32 33.2   6.19 5.6     ~ 333 2
134 HD 40512 * 05 59 29.9243438222 +02 28 34.173449795   8.21 7.74     F5V 41 0
135 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2037 0
136 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 391 1
137 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 896 1
138 NAME Upper Sco Association As* 16 12 -23.4           ~ 1034 1
139 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1485 0
140 IC 4725 OpC 18 31 47 -19 07.0           ~ 192 0
141 V* BY Dra BY* 18 33 55.7719224141 +51 43 08.903033617 10.22 9.23   8.733   K4Ve+K7.5Ve 594 0
142 NGC 7789 OpC 23 57 24 +56 42.5   7.68 6.7     ~ 455 0

    Equat.    Gal    SGal    Ecl

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2020.08.09-02:01:07

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