2016A&A...592A..87A


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST00:24:22

2016A&A...592A..87A - Astronomy and Astrophysics, volume 592A, 87-87 (2016/8-1)

Abundance trend with condensation temperature for stars with different Galactic birth places.

ADIBEKYAN V., DELGADO-MENA E., FIGUEIRA P., SOUSA S.G., SANTOS N.C., GONZALEZ HERNANDEZ J.I., MINCHEV I., FARIA J.P., ISRAELIAN G., HARUTYUNYAN G., SUAREZ-ANDRES L. and HAKOBYAN A.A.

Abstract (from CDS):

Context. During the past decade, several studies reported a correlation between chemical abundances of stars and condensation temperature (also known as Tc trend). However, the real astrophysical nature of this correlation is still debated.
Aims. The main goal of this work is to explore the possible dependence of the Tc trend on stellar Galactocentric distances, Rmean.
Methods. We used high-quality spectra of about 40 stars observed with the HARPS and UVES spectrographs to derive precise stellar parameters, chemical abundances, and stellar ages. A differential line-by-line analysis was applied to achieve the highest possible precision in the chemical abundances.
Results. We confirm previous results that [X/Fe] abundance ratios depend on stellar age and that for a given age, some elements also show a dependence on Rmean. When using the whole sample of stars, we observe a weak hint that the Tc trend depends on Rmean. The observed dependence is very complex and disappears when only stars with similar ages are considered.
Conclusions. To conclude on the possible dependence of the Tc trend on the formation place of stars, a larger sample of stars with very similar atmospheric parameters and stellar ages observed at different Galactocentric distances is needed.

Abstract Copyright: © ESO, 2016

Journal keyword(s): techniques: spectroscopic - stars: abundances - stars: atmospheres - Galaxy: disk - Galaxy: evolution

VizieR on-line data: <Available at CDS (J/A+A/592/A87): param.dat abund.dat>

Simbad objects: 46

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Number of rows : 46

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 8828 PM* 01 27 01.5472419697 -00 09 27.303543725   8.67 7.93     G5V 71 0
2 HD 11271 PM* 01 50 52.0844149259 +06 31 42.721055374   9.05 8.46     G5 27 0
3 * zet01 Ret PM* 03 17 46.1632605674 -62 34 31.154247481 6.24 6.18 5.54 5.00 4.66 G2.5VHdel1 269 0
4 * zet02 Ret ** 03 18 12.8185412558 -62 30 22.917300282   5.814 5.228     G1V 325 0
5 HD 23079 PM* 03 39 43.0960508327 -52 54 57.016146971   7.68 7.11     F9.5V 136 1
6 HD 44594 ** 06 20 06.13530 -48 44 27.9344 7.46 7.26 6.60     G2Va 151 0
7 HD 45067 PM* 06 25 16.5464141963 -00 56 45.178168018   6.43 5.90     F9V 174 0
8 HD 59967 PM* 07 30 42.5117283582 -37 20 21.704201159 7.386 7.274 6.635 6.28 5.945 G3V 126 0
9 HD 69830 PM* 08 18 23.9469692487 -12 37 55.810202572   6.74 5.95     G8:V 464 2
10 HD 77462 PM* 09 01 48.9858558563 -26 33 48.708465995   7.79 7.28     F7V 32 0
11 HD 86997 PM* 10 00 18.7916308458 -59 00 46.066532624   8.45 7.99     F7V 23 0
12 HD 90774 PM* 10 27 10.2886276354 -62 01 08.172160296   8.08 7.58     F8V 22 0
13 * iot Crt PM* 11 38 40.0179118728 -13 12 06.976480654   5.97 5.48     F6.5V 60 0
14 HD 105665 * 12 09 58.0877805981 -13 26 07.781273994   8.85 8.32     G0/1V 23 0
15 HD 106200 * 12 13 13.2584147475 -41 48 09.571546559   8.91 8.42     F5V 20 0
16 HD 106869 PM* 12 17 31.8723708968 -48 55 32.030868435   7.40 6.82     F8V 42 0
17 HD 109591 PM* 12 36 06.5845165162 -42 51 08.281025285   8.557 7.884 7.89   G5V 41 0
18 HD 115031 PM* 13 15 20.5130831711 -55 20 29.725322411   8.98 8.34     G2/3V 40 0
19 HD 116941 PM* 13 26 44.4244711719 +16 56 55.202170148   8.53 8.01     F8 22 0
20 HD 117190 PM* 13 28 26.67982 +15 42 29.8769   8.41 7.91     F5 46 1
21 HD 117618 PM* 13 32 25.5555942170 -47 16 16.913384391   7.77 7.17     G0V 98 1
22 HD 119758 * 13 45 59.3916057553 -43 32 18.622114030   9.38 8.71     G5V 19 0
23 HD 122194 PM* 14 01 03.6087448477 -32 45 25.020124746   10.04 9.36     G3V 38 0
24 HD 122603 PM* 14 02 47.6281354964 +03 32 43.817770459       7.2   F8/G0IV 26 0
25 HD 128760 * 14 40 12.6851374092 -45 32 45.448165218   8.65 8.12     F8/G0V 37 0
26 HD 129290 PM* 14 41 28.7754053814 +13 36 05.302399302   8.99   8.1   G2V 50 1
27 HD 130265 PM* 14 49 31.6018139355 -59 07 54.537188294   9.13 8.53     G3V 36 0
28 HD 134330 PM* 15 10 43.2147203018 -43 43 00.893110430   8.28 7.59     G6V 44 0
29 HD 139590 PM* 15 39 01.0555895132 -00 18 41.400114825   8.06 7.51     G3V 63 0
30 HD 142921 PM* 16 00 37.1780073278 -61 18 14.139821696   8.59 7.94     G2V 34 0
31 HD 146546 * 16 18 21.1557787403 -36 33 57.321390294   8.29 7.76     F7/8V 20 1
32 HD 147644 PM* 16 23 09.4457065313 -00 42 29.010390999   8.76 8.19     F8V 30 0
33 HD 148998 PM* 16 31 34.3868388334 +08 17 58.307649287   8.81 8.26     G5 25 0
34 HD 157060 PM* 17 22 37.9482545942 -35 54 38.186673855   6.954 6.419     F9V: 35 0
35 HD 158469 * 17 31 19.7569092856 -39 09 55.120366645   8.48 7.94     F8/G2V 35 0
36 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11542 0
37 HD 168432 Al* 18 19 48.16837 -04 57 41.9589   8.26       F6V 35 0
38 HD 169822 SB* 18 26 10.0892926230 +08 46 39.282248976   8.52   7.4   G6V 94 0
39 HD 175128 PM* 18 55 20.5266573835 -32 32 34.240359606   8.95 8.37     F7/8V 24 0
40 * 16 Cyg ** 19 41 49.09 +50 31 31.6           ~ 121 0
41 HD 184588 PM* 19 43 00.0388855113 -75 23 51.432584742   8.52 8.02     G0V 24 0
42 HD 188345 PM* 19 53 59.7039605474 +20 00 34.559368430   8.58 7.96     G5 26 0
43 HD 198227 * 20 48 35.7923170223 +09 27 58.533745182   8.17 7.62     F8 19 0
44 HD 213791 PM* 22 34 24.7233802331 -19 03 10.722307440   9.12 8.62     F8V 19 0
45 HD 216054 PM* 22 50 10.5269775878 -41 29 24.382975444   8.51 7.77     G9V 56 0
46 HD 219272 PM* 23 15 37.6492765022 -66 53 14.994684120   9.45 8.93     F8/G0V 14 0

    Equat.    Gal    SGal    Ecl

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2020.07.13-00:24:22

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