2002A&A...390..383G


Query : 2002A&A...390..383G

2002A&A...390..383G - Astronomy and Astrophysics, volume 390, 383-395 (2002/7-4)

Determination of accurate stellar radial-velocity measures.

GULLBERG D. and LINDEGREN L.

Abstract (from CDS):

Wavelength measurements in stellar spectra cannot readily be interpreted as true stellar motion on the sub-km/s accuracy level due to the presence of many other effects, such as gravitational redshift and stellar convection, which also produce line shifts. Following a recommendation by the IAU, the result of an accurate spectroscopic radial-velocity observation should therefore be given as the ``barycentric radial-velocity measure'', i.e. the absolute spectral shift as measured by an observer at zero gravitational potential located at the solar-system barycentre. Standard procedures for reducing accurate radial-velocity observations should be reviewed to take into account this recommendation. We describe a procedure to determine accurate barycentric radial-velocity measures of bright stars, based on digital cross-correlation of spectra obtained with the ELODIE spectrometer (Observatoire de Haute-Provence) with a synthetic template of FeI lines. The absolute zero point of the radial-velocity measures is linked to the wavelength scale of the Kurucz (1984, Solar flux atlas from 296 to 1300nm (National Solar Observatory, Sunspot)) Solar Flux Atlas via ELODIE observations of the Moon.
Result. are given for the Sun and 42 stars, most of them members of the Hyades and Ursa Major clusters. The median internal standard error is 27m/s. The external error is estimated at around 120m/s, mainly reflecting the uncertainty in the wavelength scale of the Solar Flux Atlas. For the Sun we find a radial-velocity measure of +257±11m/s referring to the full-disk spectrum of the selected FeI lines.

Abstract Copyright:

Journal keyword(s): methods: data analysis - techniques: radial velocities - stars: kinematics - open clusters and associations: general

Simbad objects: 40

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Number of rows : 40
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 * 6 Cet PM* 00 11 15.8580395472 -15 28 04.720468404 5.35 5.38 4.89     F8VFe-0.8CH-0.5 298 0
2 HD 2665 PM* 00 30 45.4469338728 +57 03 53.628989292 8.66 8.51 7.72     G5IIIw 171 0
3 V* BW Ari BY* 02 57 46.6725922800 +29 39 41.267627640 10.24 9.778   8.10   K0V 79 0
4 * 47 Ari PM* 02 58 05.2213070040 +20 40 07.442238720   6.230   5.6   F0V(e) 181 0
5 LP 355-64 PM* 03 22 28.1398048176 +27 09 21.789867348   12.460   10.599   K7V 49 0
6 BD+23 465 PM* 03 32 50.0788552872 +23 41 31.872801696   9.719   8.3   G5 81 0
7 HD 25825 PM* 04 06 16.1277225936 +15 41 53.233746900   8.416 7.811 7.484 7.169 G0V 180 0
8 HD 26345 PM* 04 10 42.3629157312 +18 25 23.714993208   7.005 6.576 6.329 6.095 F6V 140 0
9 MCC 435 PM* 04 12 42.1723491600 +70 12 05.641609284   10.89 9.70 9.318   K7V 36 0
10 V* V1309 Tau BY* 04 14 27.2546195976 +12 26 07.133100324   8.682 8.030 7.673 7.341 G0 158 0
11 HD 26784 PM* 04 14 34.3409896608 +10 42 04.993916796   7.606 7.080 6.791 6.511 F8V 184 0
12 * gam Tau ** 04 19 47.6038491 +15 37 39.515422 5.46 4.64 3.65 4.83   G9.5IIIabCN0.5 532 0
13 HD 27406 BY* 04 20 12.9666179232 +19 14 00.518450172   8.016 7.444 7.131 6.826 F9V+ 185 0
14 * eps Tau ** 04 28 37.0002551195 +19 10 49.563140930 5.42 4.54 3.53     G9.5IIICN0.5 569 1
15 HD 28344 BY* 04 28 48.2984108040 +17 17 07.685984400 8.57 8.456 7.837 7.498 7.180 G2V 271 0
16 HD 283704 PM* 04 29 30.7656855048 +26 40 17.572841688 12.79 9.985 9.182     G5 109 0
17 HD 285837 PM* 04 33 41.9273592288 +19 00 50.523664932   11.926 10.733     K7 56 0
18 HD 28992 BY* 04 34 35.3100676992 +15 30 16.642906992   8.530 7.898 7.556 7.226 ~ 199 0
19 HD 29419 PM* 04 38 51.2919739632 +23 08 59.904203964   8.103 7.501     G5V 124 0
20 HD 284574 PM* 04 40 05.8433176920 +23 18 16.365681612   10.211 9.402     K0 87 0
21 HD 284930 PM* 04 52 23.5314653976 +18 59 48.866831160   11.351 10.280     K0 57 0
22 * 101 Tau PM* 04 59 44.3220286320 +15 55 00.236683308   7.220 6.747     F5V 128 0
23 BD+04 810 PM* 05 00 48.8864723520 +04 43 59.202316740   10.67 9.74     K2 44 0
24 * chi01 Ori RS* 05 54 22.9829893 +20 16 34.222038 5.08 5.00 4.40 3.90 3.59 G0V 826 0
25 HD 59747 BY* 07 33 00.5805100512 +37 01 47.446248504   8.58 7.70     G5V 90 0
26 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1828 0
27 HD 238087 PM* 12 12 05.2231541016 +58 55 35.008503240   11.4 10.021 9.633   K5V 50 0
28 HD 110463 BY* 12 41 44.5223098128 +55 43 28.822255644   9.250 8.265     K3Ve 106 0
29 HD 115043 PM* 13 13 37.0081725552 +56 42 29.759356008   7.423 6.813     G1Va 249 0
30 * sig Boo PM* 14 34 40.8173867232 +29 44 42.457673940 4.76 4.84 4.47 4.13 3.94 F4VkF2mF1 588 0
31 HD 135599 BY* 15 15 59.1668432664 +00 47 46.900249728 8.215 7.748 6.905 6.438 6.028 K0V 107 0
32 HD 155712 PM* 17 12 37.6225386888 +18 21 04.300505496       7.4   K2.5V 45 0
33 HD 163183 PM* 17 47 38.1777173760 +73 07 57.646788816   8.33 7.75     G0 35 0
34 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 473 0
35 * omi Aql PM* 19 51 01.6436960928 +10 24 56.592457524   5.66   4.8   F8V 439 0
36 HD 197076 PM* 20 40 45.1407228005 +19 56 07.930118119 7.14 7.06 6.44 5.95 5.61 G5V 239 0
37 * bet Aqr * 21 31 33.5317148 -05 34 16.232006 4.27 3.71 2.89 2.29 1.84 G0Ib 438 0
38 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1128 1
39 HD 221170 Pe* 23 29 28.8087143040 +30 25 57.849303180 9.43 8.74 7.66     G2IV 276 0
40 * iot Psc PM* 23 39 57.0413764 +05 37 34.647529 4.640 4.620 4.120 3.68 3.37 F7V 599 0

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2022.10.02-02:48:48

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