1999A&A...348.1040D

Query : 1999A&A...348.1040D

1999A&A...348.1040D - Astronomy and Astrophysics, volume 3481040-1051 (1999/8-3)

Astrometric radial velocities. I. Non-spectroscopic methods for measuring stellar radial velocity.

DRAVINS D., LINDEGREN L. and MADSEN S.

Abstract (from CDS):

High-accuracy astrometry permits the determination of not only stellar tangential motion, but also the component along the line-of-sight. Such non-spectroscopic (i.e. astrometric) radial velocities are independent of stellar atmospheric dynamics, spectral complexity and variability, as well as of gravitational redshift. Three methods are analysed: (1) changing annual parallax, (2) changing proper motion and (3) changing angular extent of a moving group of stars. All three have significant potential in planned astrometric projects. Current accuracies are still inadequate for the first method, while the second is marginally feasible and is here applied to 16 stars. The third method reaches high accuracy (<1km/s) already with present data, although for some clusters an accuracy limit is set by uncertainties in the cluster expansion rate.

Abstract Copyright: ∼

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

Simbad objects: 68

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Number of rows : 68
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 225213 PM* 00 05 24.4284351777 -37 21 26.507931505 11.074 10.022 8.562 7.589 6.432 M2V 229 0
2 HD 1326 PM* 00 18 22.8849799680 +44 01 22.637951588   9.61 8.14 7.3   M2V 602 0
3 HD 1326B PM* 00 18 25.8251408611 +44 01 38.092431857   12.84 11.04 10.3   M3.5V 317 0
4 Wolf 28 WD* 00 49 09.8983373329 +05 23 18.993828947 12.984 12.92 12.374 12.106 11.854 DZ7.5 266 0
5 * mu. Cas SB* 01 08 16.3029454473 +54 55 12.561201263 5.93 5.86 5.17 4.55 4.13 G5Vb 593 1
6 G 272-61B PM* 01 39 01.6377185550 -17 57 01.001240728           M6V 892 0
7 * tau Cet PM* 01 44 04.0831371922 -15 56 14.927607677 4.43 4.22 3.50 2.88 2.41 G8V 1354 1
8 NGC 752 OpC 01 56 53.7 +37 45 06           ~ 712 0
9 HD 13949 PM* 02 14 18.5103072648 -49 51 44.626222980   11.04 9.76     K6.5Vk: 28 0
10 Cl Stock 2 OpC 02 15 47.8 +59 33 12           ~ 155 0
11 * e Eri PM* 03 19 55.6509122226 -43 04 11.215188426 5.20 4.98 4.27 3.65 3.25 G6V 501 1
12 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
13 Ass Per OB 2 As* 03 42.2 +33 26           ~ 350 0
14 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
15 * omi02 Eri PM* 04 15 16.3196189945 -07 39 10.330779018 5.69 5.25 4.43 3.74 3.29 K0V 879 0
16 * omi02 Eri C PM* 04 15 21.5359980886 -07 39 20.694578096   12.85 11.17     M4.5V 249 0
17 * omi02 Eri B WD* 04 15 21.7957181469 -07 39 29.203986789 9.147 9.83 9.53     DA2.9 357 0
18 NAME CAS-TAU ASS MGr 04 16 +27.6           ~ 86 1
19 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
20 HD 33793 PM* 05 11 40.5898395497 -45 01 06.361734876 11.624 10.433 8.853 7.9 6.899 M1VIp 367 0
21 Cl Collinder 70 OpC 05 35 30 -01 06.0           ~ 65 0
22 M 37 OpC 05 52 18.6 +32 32 36           ~ 436 0
23 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
24 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1610 0
25 * alf CMa B WD* 06 45 09.3041925037 -16 43 00.724740067   8.41 8.44     DA1.9 563 1
26 Cl Collinder 121 OpC 06 56 20 -24 43.8   3.02 2.6     ~ 156 0
27 BD+05 1668 PM* 07 27 24.4989685603 +05 13 32.841491057 12.558 11.443 9.872 8.699 7.161 M3.5V 477 0
28 NGC 2451 Cl* 07 45.4 -37 58           ~ 165 1
29 NGC 2477 OpC 07 52 11.4 -38 32 47   6.64 5.8     ~ 314 0
30 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
31 Ross 619 PM* 08 11 57.5691729379 +08 46 22.952885566   14.60 12.834 12.527   M4.5V 227 0
32 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
33 Cl Trumpler 10 OpC 08 47 46.4 -42 31 52           ~ 203 0
34 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
35 Wolf 359 PM* 10 56 28.9208702274 +07 00 53.003285286 16.706 15.541 13.507 11.684 9.507 dM6 775 0
36 HD 95735 PM* 11 03 20.1948195942 +35 58 11.576182057 10.030 8.960 7.520 5.99 4.79 M2+V 795 0
37 BD+44 2051 PM* 11 05 28.5769490063 +43 31 36.386948721 11.440 10.270   7.9   M1.0V 368 0
38 BD+44 2051B PM* 11 05 30.8855820790 +43 31 17.885197587   16.45 14.45 13.4   M6.0V 279 0
39 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
40 LAWD 37 WD* 11 45 42.9169346379 -64 50 29.461957832 11.08 11.725 11.513 11.34 11.163 DQ 287 0
41 HD 103095 Pe* 11 52 58.7673387755 +37 43 07.254113125 7.38 7.20 6.45 5.80 5.35 K1V_Fe-1.5 842 1
42 Cl Melotte 111 OpC 12 11 54.9 +25 16 36           ~ 520 0
43 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
44 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 467 1
45 NAME Proxima Centauri PM* 14 29 42.9461331854 -62 40 46.164680672 14.21 12.95 11.13 9.45 7.41 M5.5Ve 1483 0
46 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 1092 2
47 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1352 1
48 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
49 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
50 NAME Barnard's star BY* 17 57 48.4984700685 +04 41 36.113879676 12.497 11.24 9.511 8.298 6.741 M4V 907 2
51 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0
52 IC 4725 OpC 18 31 47.5 -19 07 37           ~ 239 0
53 IC 4756 OpC 18 38 39.0 +05 26 14           ~ 274 0
54 HD 173739 PM* 18 42 46.7043860406 +59 37 49.409446059   10.43 8.93     M3V 427 1
55 HD 173740 PM* 18 42 46.8946714770 +59 37 36.721161413   11.32 9.78     M3.5V 381 1
56 L 347-14 PM* 19 20 47.9843202599 -45 33 29.643538526   13.93 12.23     M4.5V 90 0
57 HD 189433 * 19 58 34.9789531272 +36 56 44.454150888   8.89 8.85     A 19 0
58 * 61 Cyg A BY* 21 06 53.9395895022 +38 44 57.902349973 7.50 6.39 5.21 4.19 3.54 K5V 1099 0
59 * 61 Cyg B PM* 21 06 55.2638444466 +38 44 31.358519864 8.63 7.40 6.03 4.86 3.55 K7V 765 0
60 V* AX Mic PM* 21 17 15.2690680973 -38 52 02.503938581   8.06 6.68     M1V 249 0
61 Ass Cep OB 2 As* 21 51 +60.0           ~ 303 0
62 * eps Ind PM* 22 03 21.6536261624 -56 47 09.522795714   5.75 4.69     K5V 616 0
63 Ass Cep OB 6 As* 22 30 +58.0           ~ 46 0
64 V* EZ Aqr Er* 22 38 33.576000 -15 17 59.75700 15.762 14.33 12.38 12.12 8.677 M5V 320 1
65 NAME I Lac As* 22 41 +38.5           ~ 158 0
66 HD 217987 PM* 23 05 52.0357857091 -35 51 11.055185039   8.83 7.39     M2V 320 0
67 Ross 248 BY* 23 41 55.0363002516 +44 10 38.818911116   14.19   11.1   M5.0V 361 0
68 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0

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