2001A&A...367..253F


Query : 2001A&A...367..253F

2001A&A...367..253F - Astronomy and Astrophysics, volume 367253-265 (2001/2-3)

The nature of super-metal-rich stars. Detailed abundance analysis of 8 super-metal-rich star candidates.

FELTZING S. and GONZALEZ G.

Abstract (from CDS):

We provide detailed abundance analyses of 8 candidate super-metal-rich stars. Five of them are confirmed to have [Fe/H]>0.2dex, the generally-accepted limit for super-metal-richness. Furthermore, we derive abundances of several elements and find that the stars follow trends seen in previous studies of metal-rich stars. Ages are estimated from isochrones and velocities calculated. We find that there do exist very metal-rich stars that are older than 10Gyr. This is contrary to what is found in several recent studies of the galactic age-metallicity relation. This is tentative evidence that there might not exist a one-to-one relation between age and metallicity for all stars. This is not surprising considering the current models of the independent evolution of the different galactic components. We also find that one star, HD 182572, could with ∼75% chance be a thick disk star with, for the thick disk, an extremely high metallicity at 0.34 dex. This star is, intriguingly, also somewhat enhanced in the α-elements.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances, fundamental parameters, late-type, individual: HD 10780, HD 32147, HD 99491, HD 104304, HD 121370, HD 145675, HD 196755, HD 182572 - Galaxy: solar neighbourhood

Simbad objects: 24

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Number of rows : 24
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 * ups And PM* 01 36 47.8415443907 +41 24 19.651368029 4.70 4.64 4.10 3.64 3.35 F9V 1017 1
2 HD 10780 BY* 01 47 44.8344358038 +63 51 09.011001993 6.84 6.44 5.63 4.99 4.60 K0V 384 0
3 HD 32147 PM* 05 00 48.9993452248 -05 45 13.224327192 8.27 7.27 6.21 5.36 4.87 K3+V 500 1
4 HD 75289 PM* 08 47 40.3893739728 -41 44 12.455319264 7.04 6.94 6.36     F9VFe+0.3 295 1
5 * rho01 Cnc PM* 08 52 35.8111044043 +28 19 50.954994470 7.45 6.82   5.4   K0IV-V 1223 1
6 HD 89744 PM* 10 22 10.5618854376 +41 13 46.309698444   6.25 5.72     F7V 360 1
7 BD-10 3166 PM* 10 58 28.7841138528 -10 46 13.394735436   10.88 10.01 9.85 9.19 K3.0V 145 1
8 * 47 UMa PM* 10 59 27.9727514012 +40 25 48.920572724   5.66   4.7   G1-VFe-0.5 824 1
9 * 83 Leo A PM* 11 26 45.3217299671 +03 00 47.156637705 7.78 7.28 6.46 6.0   G9IV-V 259 0
10 * 83 Leo ** 11 26 45.8 +03 00 35 7.63 7.01 6.16     ~ 215 0
11 HD 104304 SB* 12 00 44.4601479291 -10 26 46.067117528 6.76 6.32 5.55     G8IV 264 0
12 * 70 Vir PM* 13 28 25.8085908881 +13 46 43.638308807 5.930 5.680 4.970 4.37 3.98 G4Va 754 1
13 * tau Boo PM* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 1049 1
14 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 733 0
15 * alf Cen ** 14 39 36.50 -60 50 02.3   0.4 -0.1     G2V+K1V 1031 0
16 * rho CrB PM* 16 01 02.6604891411 +33 18 12.639472357   6.01   5.0   G0+VaFe-1 686 1
17 * 14 Her PM* 16 10 24.3156759007 +43 49 03.507406809   7.57   6.1   K0V 482 1
18 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 522 0
19 * 16 Cyg A ** 19 41 48.9534996168 +50 31 30.219536784 6.79 6.59 5.95 5.50 5.17 G1.5Vb 814 0
20 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 949 1
21 HD 187123 PM* 19 46 58.1122487784 +34 25 10.281404460       7.4   G2V 264 1
22 * kap Del PM* 20 39 07.7867477765 +10 05 10.291671448   5.77   4.6   G2IV 206 0
23 HD 210277 PM* 22 09 29.8657847411 -07 32 55.162082226   8.85 8.57 7.36   G8V 366 1
24 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1216 1

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