2002ApJ...570..820P

Query : 2002ApJ...570..820P

2002ApJ...570..820P - Astrophys. J., 570, 820-824 (2002/May-2)

Detailed analysis of nearby bulgelike dwarf stars. II. Lithium abundances.

POMPEIA L., BARBUY B., GRENON M. and CASTILHO B.V.

Abstract (from CDS):

Li abundances are derived for a sample of bulgelike stars with isochronal ages of 10-11 Gyr. These stars have orbits with pericentric distances, Rp, as small as 2-3 kpc and Zmax<1 kpc. The sample comprises G and K dwarf stars in the metallicity range -0.80≤[Fe/H]≤+0.40. Few data on Li abundances in old turnoff stars (≥4.5 Gyr) within the present metallicity range are available. M67 (4.7 Gyr) and NGC 188 (6 Gyr) are the oldest studied metal-rich open clusters with late-type stars. Li abundances have also been studied for a few samples of old metal-rich field stars. In the present work, a high dispersion in Li abundances is found for bulgelike stars with all metallicity ranges, comparable with values in M67. The role of metallicity and age on a Li depletion pattern is discussed. The possible connection between Li depletion and oxygen abundance due to atmospheric opacity effects is investigated.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Abundances - Stars: Abundances - Stars: Evolution - Stars: Late-Type

Simbad objects: 52

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Number of rows : 52
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 Cl Blanco 1 OpC 00 03 04.1 -29 48 55           ~ 380 0
2 HD 4308 PM* 00 44 39.2672095011 -65 38 58.277728125 7.31 7.193 6.552     G6VFe-0.9 267 1
3 NGC 188 OpC 00 47 14.8 +85 14 42           ~ 990 0
4 * 29 Cet PM* 01 07 59.6638945208 +01 59 34.981418276   7.31   5.9   G8IV/V 168 0
5 HD 8638 PM* 01 24 49.2068801478 -27 50 20.563364516   8.99 8.36     G6V(w) 125 0
6 HD 9424 SB* 01 31 22.1659299081 -58 43 11.616943596   9.97 9.17     G8V 45 0
7 HD 10576 PM* 01 40 32.2390490328 -69 59 13.096455000   9.08 8.50     G0/1V 37 0
8 HD 10785 PM* 01 45 16.3605201249 -15 53 44.361052406   9.13 8.50     G1/2V 56 0
9 HD 11306 PM* 01 48 19.2891990576 -70 04 11.001858096   9.97 9.20     G8V 34 0
10 HD 11397 PM* 01 51 40.5281107159 -16 19 03.566317848   9.63 9.02     G6IV/V 141 0
11 NGC 754 AG? 01 54 20.8410799056 -56 45 39.631847724   15.24   13.91   ~ 14 0
12 HD 14282 PM* 02 18 26.0413313304 -06 36 20.936530512   8.97 8.40     G8/K0+F/G 32 0
13 HD 16623 PM* 02 39 09.6723696912 -26 19 07.376108124   9.37 8.83     F7wG3V 74 0
14 NGC 1039 OpC 02 42 09.1 +42 44 02           ~ 467 0
15 HD 20683 PM* 03 19 44.3333805912 -02 04 18.092526384   9.63 9.07     G2/3V 20 0
16 Cl Melotte 20 MGr 03 26 50.6 +48 51 48           ~ 928 0
17 HD 21543 PM* 03 28 21.0836248328 -06 31 51.313523590   9.113 9.125     G2V 122 0
18 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
19 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
20 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
21 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
22 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
23 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
24 NGC 3688 Sy2 11 27 44.4518431464 -09 09 55.815802380   15   13.89   ~ 23 0
25 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 467 1
26 HD 143016 SB* 15 58 24.4158442986 -17 45 07.390399415   9.14 8.50     G3V 31 0
27 HD 143102 PM* 16 01 12.7602644444 -56 41 41.732728891   8.62 7.88     G6IV/V 34 0
28 HD 148530 PM* 16 28 35.9491456781 +03 15 10.626401149   9.59   8.3   G8/K0V 67 0
29 HD 149256 PM* 16 35 06.7549909705 -36 03 42.004647384   9.26 8.40     G8IV 26 0
30 HD 152391 PM* 16 52 58.8025159848 -00 01 35.118396116   7.40 6.64     G8.5Vk: 396 0
31 HD 326583 PM* 16 57 47.1374819496 -43 47 59.299966392   10.10 9.46     G0 19 0
32 IC 4651 OpC 17 24 48.5 -49 55 23           ~ 374 0
33 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
34 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
35 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
36 HD 175617 PM* 18 56 20.7708334339 -04 24 48.653532334   10.81 10.10     G6V 43 0
37 HD 179764 PM* 19 14 12.0883053251 -09 58 17.627987910   9.82 9.05     K0V 25 0
38 HD 181234 PM* 19 20 00.0974335061 -09 19 24.952809813   9.44 8.59     G8IV 67 0
39 HD 178737 PM* 19 23 48.4726031808 -81 32 26.277815040   9.40 8.71     G2/3V 21 0
40 HD 184846 PM* 19 43 07.2353290296 -73 14 55.767085260   9.62 8.94     G5V 37 0
41 BD-17 6035 PM* 20 36 53.3231766432 -16 45 54.970955028   11.38 10.143 10.128   K4V 27 0
42 HD 198245 PM* 20 50 22.5567684068 -40 36 30.498682353   9.57 8.98     G3V 53 0
43 HD 201237 PM* 21 08 41.6961978936 -19 59 41.420822640   11.33 10.15     K2(III) 28 0
44 HD 211276 ** 22 16 06.5518434827 -07 05 26.481952630   9.43 8.74     G5V 62 0
45 HD 211532 PM* 22 17 50.8032769584 -07 35 16.209208068   10.06 9.27     K0V 25 0
46 HD 211706 PM* 22 19 07.7662330368 -07 18 48.944142144   9.48 8.86     G2/3V 46 0
47 HD 214059 PM* 22 35 38.1673452306 +05 22 24.163080925   8.94 8.25 7.8   G6V 77 0
48 CD-40 15036 PM* 23 08 31.2728325456 -39 22 33.172909608   10.90 10.04     ~ 18 0
49 HD 219180 PM* 23 14 10.5105887520 -33 03 13.898175264   10.59 9.82     G5V 20 0
50 HD 220536 PM* 23 24 45.2175972672 -40 25 08.779260288   9.62 9.06     G1V 34 0
51 HD 220993 PM* 23 28 39.4379650128 -43 41 31.823447568   10.01 9.38     G3V 21 0
52 HD 224383 PM* 23 57 33.5181718097 -09 38 51.070746906   8.51 7.88     G3V 135 0

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