2014A&A...570A..22T


Query : 2014A&A...570A..22T

2014A&A...570A..22T - Astronomy and Astrophysics, volume 570A, 22-22 (2014/10-1)

Heavy elements in old very metal-rich stars.

TREVISAN M. and BARBUY B.

Abstract (from CDS):

We studied a sample of high proper motion, old and metal-rich dwarf stars, selected from the NLTT catalogue. The low pericentric distances and eccentric orbits of these solar neighbourhood stars indicate that they might have originated in the inner parts of the Galaxy. Chemical tagging can probe the formation history of stellar populations. To identify the origin of a sample of 71 very metal-rich dwarf stars, we derive the abundances of the neutron-capture elements Y, Ba, La, and Eu. The spectroscopic analysis is based on optical high-resolution echelle spectra obtained with the FEROS spectrograph at the ESO 1.52m Telescope at La Silla, Chile. The abundances of Y, Ba, La, and Eu were derived through LTE analysis, employing the MARCS model atmospheres. The abundances of Y, Ba, La, and Eu vs. Fe and Mg as the reference elements indicate similarities between our sample of old metal-rich dwarf stars and the thin disk. On the other hand, the abundance ratios using O as the reference element, as well as their kinematics, suggest that our sample is clearly distinct from the thin-disk stars. They could be old inner thin-disk stars, as suggested previously, or bulge stars. In either cases, they would have migrated from the inner parts of the Galaxy to the solar neighbourhood.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: atmospheres - solar neighborhood

VizieR on-line data: <Available at CDS (J/A+A/570/A22): abunds.dat>

Simbad objects: 73

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Number of rows : 73
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 CD-32 327 PM* 00 50 14.7476163264 -31 19 57.977967612   11.44 10.50     ~ 13 0
2 BD-02 180 PM* 01 13 20.9288599920 -01 43 45.596478000   11.01 10.06     K0 20 0
3 HD 8389 PM* 01 23 02.6387118640 -12 57 57.844303470   8.74 7.84     K0VCN+2 101 0
4 HD 9174 PM* 01 30 01.0020741024 -19 36 16.207733484   9.14 8.37     G8IV 35 0
5 HD 9424 SB* 01 31 22.1659299081 -58 43 11.616943596   9.97 9.17     G8V 37 0
6 HD 10576 PM* 01 40 32.2390490328 -69 59 13.096455000   9.08 8.50     G0/1V 32 0
7 HD 11608 PM* 01 53 31.4441065584 -21 15 09.820414260   10.26 9.28     K1/2V 32 0
8 HD 12789 PM* 02 04 06.5014501200 -46 22 29.041555404   9.59 8.89     G8/K0III+F 18 0
9 HD 13386 PM* 02 10 08.0354080704 -31 04 11.530968528   9.79 8.91     K0V 47 0
10 HD 15133 PM* 02 25 32.8918930440 -28 59 15.653828220   10.26 9.31     K1III 18 0
11 HD 15555 RG* 02 29 34.0169251662 -24 06 14.271763531   8.39 7.34     K1III 41 0
12 HD 16905 PM* 02 40 03.1897395960 -61 21 15.279551388   10.46 9.46     K3V 31 0
13 HD 25061 PM* 03 56 25.2983410040 -52 55 51.126291999   10.11 9.26     K1V 61 0
14 HD 26151 PM* 04 07 20.7228981816 -27 25 32.379388428   9.34 8.50     K1V 59 0
15 HD 26794 PM* 04 14 30.2993352984 +03 01 19.389478656   9.78   8.2   K3V 75 0
16 HD 27894 PM* 04 20 47.0461066173 -59 24 39.024646358   10.42 9.42     K2V 78 1
17 HD 30295 PM* 04 42 19.9767596688 -61 37 14.492749008   9.60 8.83     K0/1V 40 0
18 HD 31452 PM* 04 56 10.6943726719 +02 56 03.038805588   9.28   7.8   G8/K0IV 56 0
19 HD 31827 PM* 04 56 18.3105842424 -51 02 51.049567320   9.03 8.24     G8IV 39 0
20 HD 35854 PM* 05 26 14.7380907720 -32 30 17.137639800 9.431 8.673 7.711 7.184 6.7 K2/3V 79 0
21 HD 37986 PM* 05 41 53.6865095232 -15 37 49.950691068   8.16 7.37     G8+VCN+1 100 0
22 HD 39213 PM* 05 49 16.4902898784 -37 30 48.043081692   9.79 8.93     K0V 37 0
23 HD 39715 PM* 05 54 28.5765205846 +02 08 32.041435253   9.86   8.1   K3V 81 0
24 HD 43848 PM* 06 16 31.3559942976 -40 31 54.827597100   9.57 8.64     K2IV 36 1
25 HD 77338 PM* 09 01 12.4934924904 -25 31 37.432543296   9.47 8.59     K0IV 65 1
26 G 161-29 PM* 09 25 42.4168171439 -06 46 19.443320826   12.49 11.29     ~ 18 0
27 HD 81767 PM* 09 27 09.2786581728 -16 39 43.132300200   10.41 9.47     K2(III) 33 0
28 HD 82943 PM* 09 34 50.7353072232 -12 07 46.369202196   7.17 6.53     F9VFe+0.5 451 2
29 HD 86065 PM* 09 55 42.5148077082 -18 06 26.664842067   10.31 9.34     K2.5V 47 0
30 HD 86249 PM* 09 56 12.5052306576 -40 47 13.082454420   9.96 8.98     K2.5V 49 0
31 HD 87007 PM* 10 01 58.5834562296 -10 24 19.411744716   9.60 8.73     K0V 35 0
32 HD 90054 PM* 10 23 43.4475962616 +02 37 09.632156484       7.5   F8V 40 0
33 HD 91585 PM* 10 33 57.1216216873 -29 32 00.677679524   10.33 9.42     K2V 23 0
34 HD 91669 PM* 10 34 54.4257484776 -13 47 16.624536036   10.62 9.70     K0/1III 20 0
35 HD 93800 PM* 10 49 31.6945155936 -06 46 10.495954272   10.00 9.10     K1III 27 0
36 HD 94374 PM* 10 53 22.5034546940 -14 22 28.213514211   10.21 9.25     K3V 22 0
37 HD 95338 PM* 10 59 26.3040013933 -56 37 22.947342987   9.50 8.62     K1IV-V 50 0
38 HD 104212 PM* 12 00 03.3629024112 -46 47 03.087575268   9.04 8.38     G3V 49 0
39 HD 107509 PM* 12 21 44.4664587000 -61 32 19.488710256   8.49 7.92     F8V 35 0
40 HD 120329 PM* 13 50 16.3071580028 -57 15 43.124282827   9.08 8.34     G3/5V 36 0
41 HD 143102 PM* 16 01 12.7602644444 -56 41 41.732728891   8.62 7.88     G6IV/V 29 0
42 HD 148530 PM* 16 28 35.9491456781 +03 15 10.626401149   9.59   8.3   G8/K0V 58 0
43 HD 149256 PM* 16 35 06.7549909705 -36 03 42.004647384   9.26 8.40     G8IV 21 0
44 HD 149606 PM* 16 37 36.1132890770 -40 53 17.005865467   9.91 8.94     K2.5V 45 0
45 HD 149933 PM* 16 37 45.8502514028 +00 02 24.600012750       7.6   K0V 59 0
46 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 13430 0
47 HD 165920 PM* 18 09 17.6784789024 -22 54 30.384803982   8.74 7.88     K1IV 61 0
48 HD 168714 PM* 18 24 14.5927918920 -55 03 20.606569992   9.66 8.89     G6III/IV 14 0
49 HD 171999 SB* 18 37 58.8187971885 -06 48 19.714925000   9.18 8.30 7.8   K0IV/V 77 1
50 HD 177374 PM* 19 04 45.0802503120 -07 27 21.670128108   10.38 9.40     K1V 17 0
51 HD 179764 PM* 19 14 12.0884537057 -09 58 17.619273774   9.82 9.05     K0V 20 0
52 HD 181234 PM* 19 20 00.0974335061 -09 19 24.952809813   9.44 8.59     G8IV 50 0
53 HD 180865 PM* 19 22 49.6663167268 -66 09 07.033273637   9.87 8.92     K2V 32 0
54 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 476 0
55 HD 181433 PM* 19 25 09.5666936172 -66 28 07.676956827   9.42 8.38     K3III-IV 119 1
56 BD-17 6035 PM* 20 36 53.3231766432 -16 45 54.970955028   11.38 10.143 10.128   K4V 21 0
57 HD 196397 PM* 20 37 25.5556964568 -11 52 15.815355276   9.78 8.95     G8/K0V 35 0
58 HD 196794 PM* 20 39 22.0506548605 +10 04 32.649286280   9.47   7.9   K2IV 33 0
59 HD 197921 PM* 20 49 10.1944692960 -54 46 39.850261904   10.20 9.25     K3V 41 0
60 HD 201237 PM* 21 08 41.6961978936 -19 59 41.420822640   11.33 10.15     K2(III) 20 0
61 HD 209721 PM* 22 08 22.5077890128 -69 17 13.076196144   10.32 9.49     G8IV/V 18 0
62 HD 211706 PM* 22 19 07.7662330368 -07 18 48.944142144   9.48 8.86     G2/3V 38 0
63 BD-05 5798 PM* 22 28 19.6222386576 -04 50 06.692358624   11.36 10.34     ~ 12 0
64 HD 213996 PM* 22 35 05.6669655346 +11 52 53.064616293       8.2   K2 42 0
65 HD 214463 PM* 22 38 47.9659821480 -30 12 37.203680808   10.60 9.61     K1III/IV 17 0
66 CD-40 15036 PM* 23 08 31.2728325456 -39 22 33.172909608   10.90 10.04     ~ 14 0
67 HD 218566 PM* 23 09 10.7269903047 -02 15 38.682667763   9.641 9.208 9.105 8.73 K3V 99 1
68 HD 218750 PM* 23 11 01.5284581402 -50 58 06.392726320   10.16 9.26     K1V 54 0
69 HD 221313 PM* 23 31 17.2440029808 -33 04 34.589839620   10.76 9.83     K1(III) 18 0
70 HD 221974 PM* 23 36 45.7795621080 -17 14 12.487740684   10.21 9.33     K1III 52 0
71 HD 224230 PM* 23 56 10.2725648568 -72 00 07.843357584   10.91 9.94     K3(V) 30 0
72 HD 224383 PM* 23 57 33.5181718097 -09 38 51.070746906   8.51 7.88     G3V 113 0
73 NAME Galactic Bar reg ~ ~           ~ 1109 0

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2023.01.30-02:01:57

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