1999A&A...351..247V


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.14CEST03:18:54

1999A&A...351..247V - Astronomy and Astrophysics, volume 351, 247-266 (1999/11-1)

Chemical abundances of A and F-type stars: the Hyades open cluster.

VARENNE O. and MONIER R.

Abstract (from CDS):

Abundances of 11 chemical elements have been determined for 29 F and 19 A dwarfs (``normal'' and chemically peculiar with apparent rotational velocities ranging from 11 to 237km/s) members of the Hyades cluster using Takeda's (1995) iterative procedure well suited for fast rotators. High quality spectra of high to moderate resolution have been synthesized to derive the apparent rotational velocities, microturbulent velocities and abundances of C, O, Na, Mg, Si, Ca, Sc, Fe, Ni, Y and Ba. For the F stars, the found abundances are compared to the predictions of Turcotte et al.'s (1998ApJ...504..559T) evolutionary models for the age of the Hyades. We fail to find the expected underabundances for light elements nor the overabundances for the iron-peak elements for stars having effective temperatures greater than 6500K. This suggests that diffusion alone cannot account for the derived abundances: other transport processes which counteract diffusion are probably at play. For the A stars, abundances of Na, Mg, Si, Ca, Fe, Ni and Ba are anticorrelated (correlated for O) with the apparent equatorial velocities for vesini higher than ∼100km/s. Below this value, we find no correlation in agreement with the predictions of Charbonneau & Michaud (1991ApJ...370..693C) except possibly for the abundance of Ni which might be anticorrelated with vesini. The fastest rotators (vesini≥150km/s) are strongly depletted in Mg, Si, Ca, Fe, Ni and Ba (between -0.3dex and -0.94dex) while their O abundance is normal.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: chemically peculiar - stars: rotation - Galaxy: open clusters and associations: individual: Hyades

Simbad objects: 54

goto View the reference in ADS

Number of rows : 54

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 * 47 Ari PM* 02 58 05.2213180567 +20 40 07.437303565   6.230   5.6   F0V(e) 175 0
2 HD 24357 PM* 03 53 10.0460920095 +17 19 37.509727343   6.294 5.946 5.745 5.545 F4V 171 0
3 HD 25102 PM* 03 59 40.4966295142 +10 19 49.266646656   6.762 6.340 6.097 5.860 ~ 136 0
4 HD 26015 ** 04 07 41.98340 +15 09 46.0260           F3V 146 0
5 HD 26105 * 04 07 59.7263465008 +01 13 24.136392206   9.91 9.42     F2/3V 14 0
6 HD 26345 PM* 04 10 42.3629962013 +18 25 23.714440814   7.005 6.576 6.329 6.095 F6V 134 0
7 * 45 Tau PM* 04 11 20.2823319709 +05 31 22.987536222   6.057 5.699 5.487 5.284 F4V 229 0
8 * 48 Tau El* 04 15 46.2844127105 +15 24 02.506391510   6.705 6.300 6.070 5.847 F5V 169 0
9 * 55 Tau ** 04 19 54.85720 +16 31 21.3283   7.401 6.853     F8V 235 0
10 * h Tau dS* 04 19 57.7045549280 +14 02 06.739482030   5.856 5.568 5.407 5.250 F0IV 210 0
11 * 58 Tau dS* 04 20 36.3097243891 +15 05 43.632188598   5.475 5.242 5.126 4.999 F0IV-V 178 0
12 HD 27524 PM* 04 21 31.6489558768 +21 02 23.558359736   7.215 6.779 6.531 6.283 F5V 158 0
13 HD 27534 PM* 04 21 32.2683661417 +18 25 03.301253447   7.234 6.787 6.532 6.279 F5V 151 0
14 HD 27561 PM* 04 21 34.7950093588 +14 24 35.245998570   6.999 6.578 6.338 6.099 F5IV-V 211 0
15 * 60 Tau dS* 04 22 03.5181535031 +14 04 37.917221958   6.054 5.710 7.05 5.38 A3m 257 0
16 * 63 Tau SB* 04 23 25.0639692398 +16 46 38.158913556   5.957 5.625 7.04 5.33 A1m 275 0
17 * del02 Tau PM* 04 24 05.7612291035 +17 26 38.877118086 5.07 4.95 4.80 4.64 4.57 A2Vs 221 0
18 HD 27848 PM* 04 24 22.2733632887 +17 04 44.239701147   7.405 6.947 6.698 6.445 ~ 150 0
19 * kap01 Tau PM* 04 25 22.1650526 +22 17 37.937535   4.366 4.201     A7IV-V 168 0
20 * kap02 Tau dS* 04 25 25.0168077862 +22 12 00.005843814   5.544 5.264     F0Vn 126 0
21 * del03 Tau a2* 04 25 29.38340 +17 55 40.4579   4.369 4.298 6.18 4.24 A2IV-Vs 385 0
22 * 70 Tau SB* 04 25 37.3208691208 +15 56 27.717270305   6.951 6.439 7.75   F7V 262 0
23 * ups Tau dS* 04 26 18.4636760 +22 48 48.888498   4.572 4.282     A8Vn 166 0
24 Cl Melotte 25 OpC 04 26 54.00 +15 52 00.0           ~ 2769 0
25 HD 28226 PM* 04 28 00.7833328503 +21 37 11.652517024   5.996 5.711 5.553 5.406 Am 135 0
26 * tet02 Tau dS* 04 28 39.7445471109 +15 52 15.122606898 3.690 3.600 3.410 5.43   A7III 423 0
27 * b Tau PM* 04 28 50.1638027833 +13 02 51.375403335   5.226 5.014 4.907 4.795 kA5hF0VmF0 178 0
28 HD 28363 ** 04 28 59.7541918878 +16 09 32.653706125   7.101 6.565 6.258 5.966 F8V 184 0
29 HD 28406 PM* 04 29 30.3505336847 +17 51 47.395473227 7.36 7.352 6.890 6.631 6.373 F6V 175 0
30 HD 28527 dS* 04 30 33.6330527888 +16 11 38.462112418   4.975 4.764 6.52   A6IV 182 0
31 * 83 Tau ** 04 30 37.3625936730 +13 43 27.850040832   5.655 5.395 5.245 5.093 F0IV 132 0
32 * 81 Tau SB* 04 30 38.8891812919 +15 41 30.762581514   5.739 5.454 6.76   Am 196 0
33 HD 28568 PM* 04 30 46.7979780745 +16 08 55.257372193   6.940 6.491 7.51   ~ 173 0
34 * 85 Tau PM* 04 31 51.7593427946 +15 51 05.835960545   6.342 5.998 5.799 5.604 F1.5Vn 118 0
35 HD 28736 PM* 04 32 04.8082392593 +05 24 36.150896355   6.783 6.352 6.104 5.874 ~ 144 0
36 HD 28911 PM* 04 33 46.6421338634 +13 15 06.788779219   7.031 6.597 6.351 6.108 ~ 115 0
37 * rho Tau dS* 04 33 50.9193650280 +14 50 39.936472608 4.98 4.90 4.65 4.41 4.29 A8V 209 0
38 V* V1116 Tau dS* 04 36 29.1480883846 +23 20 27.031439616   6.418 6.019     F2 106 0
39 HD 29225 PM* 04 36 40.7179502876 +15 52 09.677553504   7.074 6.619 6.371 6.115 ~ 129 0
40 * c Tau PM* 04 38 09.4616564927 +12 30 38.991822704 4.52 4.39 4.27 4.13 4.08 A6V 177 0
41 HD 29499 PM* 04 39 06.1590758485 +07 52 15.558265082   5.623 5.365 5.226 5.093 A5m 107 0
42 * sig02 Tau PM* 04 39 16.5023050 +15 55 04.702951   4.842 4.665     A5Vn 130 0
43 HD 30034 PM* 04 44 25.8285547424 +11 08 46.097692092   5.638 5.379 5.230 5.082 F0V 108 0
44 HD 30210 PM* 04 46 01.7399683665 +11 42 20.120763822   5.566 5.346     Am 145 0
45 HD 30810 ** 04 51 12.5284595938 +11 04 04.881592537   7.322 6.753     F6V 185 1
46 * i Tau dS* 04 51 22.4527939633 +18 50 23.657192876   5.302 5.085 4.964 4.830 A7IV-V 172 0
47 HD 30869A SB* 04 51 49.978609 +13 39 18.53294   6.81 6.36     ~ 179 0
48 HD 30869 ** 04 51 49.9954760810 +13 39 18.503094115   6.751 6.250 7.34 5.674 ~ 182 0
49 HD 31236 PM* 04 54 58.3611062835 +19 29 07.395516453   6.640 6.347 6.172 6.005 F1V(n) 96 0
50 * 101 Tau PM* 04 59 44.3215855444 +15 55 00.238515439   7.220 6.747     F5V 123 0
51 * iot Tau ** 05 03 05.7455626893 +21 35 23.865671091   4.797 4.615     A7V 157 0
52 * h Ori SB* 05 09 19.6456259298 +09 49 46.496469787 5.83 5.67 5.43 5.25 5.13 A2m 237 0
53 HD 33204 EB* 05 09 45.0935047294 +28 01 49.690740243   6.296 5.997   5.69 A7VAm: 153 0
54 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1786 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 1999A&A...351..247V and select 'bookmark this link' or equivalent in the popup menu


2021.06.14-03:18:54

© Université de Strasbourg/CNRS

    • Contact