2016A&A...595A..18G


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.09CEST06:40:20

2016A&A...595A..18G - Astronomy and Astrophysics, volume 595A, 18-18 (2016/11-1)

The AMBRE project: Constraining the lithium evolution in the Milky Way.

GUIGLION G., DE LAVERNY P., RECIO-BLANCO A., WORLEY C.C., DE PASCALE M., MASSERON T., PRANTZOS N. and MIKOLAITIS S.

Abstract (from CDS):

Context. The chemical evolution of lithium in the Milky Way represents a major problem in modern astrophysics. Indeed, lithium is, on the one hand, easily destroyed in stellar interiors, and, on the other hand, produced at some specific stellar evolutionary stages that are still not well constrained.
Aims. The goal of this paper is to investigate the lithium stellar content of Milky Way stars in order to put constraints on the lithium chemical enrichment in our Galaxy, in particular in both the thin and thick discs.
Methods. Thanks to high-resolution spectra from the ESO archive and high quality atmospheric parameters, we were able to build a massive and homogeneous catalogue of lithium abundances for 7300 stars derived with an automatic method coupling, a synthetic spectra grid, and a Gauss-Newton algorithm. We validated these lithium abundances with literature values, including those of the Gaia benchmark stars.
Results. In terms of lithium galactic evolution, we show that the interstellar lithium abundance increases with metallicity by 1dex from [M/H]=-1dex to +0.0dex. Moreover, we find that this lithium ISM abundance decreases by about 0.5 dex at super-solar metalllicity. Based on a chemical separation, we also observed that the stellar lithium content in the thick disc increases rather slightly with metallicity, while the thin disc shows a steeper increase. The lithium abundance distribution of α-rich, metal-rich stars has a peak at ALi∼3dex.
Conclusions. We conclude that the thick disc stars suffered of a low lithium chemical enrichment, showing lithium abundances rather close to the Spite plateau while the thin disc stars clearly show an increasing lithium chemical enrichment with the metallicity, probably thanks to the contribution of low-mass stars.

Abstract Copyright: © ESO, 2016

Journal keyword(s): Galaxy: abundances - Galaxy: stellar content - Galaxy: formation - stars: abundances

VizieR on-line data: <Available at CDS (J/A+A/595/A18): lithium.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 27

goto Full paper

goto View the reference in ADS

Number of rows : 27

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 * bet Hyi PM* 00 25 45.07036 -77 15 15.2860 3.52 3.41 2.79 2.28 1.94 G0V 560 0
2 * tau Cet PM* 01 44 04.0834226 -15 56 14.926552 4.43 4.22 3.50 2.88 2.41 G8V 1124 1
3 * eps For PM* 03 01 37.6304831834 -28 05 29.376723799   6.68 5.85     G9:V 165 0
4 * eps Eri BY* 03 32 55.8449634 -09 27 29.731165 5.19 4.61 3.73 3.00 2.54 K2V 1746 1
5 HD 22879 Pe* 03 40 22.0654223510 -03 13 01.124769689 7.146 7.222 6.667 6.346 6.016 G0VmF2 448 0
6 HD 23030 * 03 41 41.4467966568 -02 50 50.997740132   8.72 8.07     G3V 37 0
7 * del Eri RS* 03 43 14.9008787 -09 45 48.208444 5.13 4.46 3.54 2.82 2.32 K0+IV 554 0
8 * alf Tau LP? 04 35 55.23907 +16 30 33.4885 4.32 2.40 0.86 -0.37 -1.31 K5+III 1195 1
9 HD 49933 ** 06 50 49.831 -00 32 27.18           F3V 338 2
10 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1782 0
11 HD 84937 PM* 09 48 56.09801 +13 44 39.3237 8.49 8.68 8.32 7.97 7.70 F8Vm-5 734 0
12 HD 90422 PM* 10 25 29.4913068171 -45 10 57.762571295   8.76 8.24     G0V 44 0
13 * Y Vel PM* 10 31 21.8213012849 -53 42 55.737315449   5.39 4.89     F9VFe-0.8CH-0.7 147 0
14 * bet Vir PM* 11 50 41.7182390 +01 45 52.991019 4.26 4.15 3.60 3.13 2.85 F9V 868 0
15 * c Vir PM* 12 20 20.9813348 +03 18 45.260365 7.27 6.12 4.96 4.07 3.46 K0.5IIIbFe-0.5 342 0
16 * eps Vir PM* 13 02 10.5978496 +10 57 32.941443 4.45 3.71 2.79 2.16 1.71 G8III-IIIb 525 0
17 * sig Boo PM* 14 34 40.8171808483 +29 44 42.463685978 4.76 4.84 4.47 4.13 3.94 F4VkF2mF1 580 0
18 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 922 1
19 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1162 0
20 HD 140283 Pe* 15 43 03.0967798658 -10 56 00.595803430 7.508 7.711 7.212 6.63 8.21 F9VkA5mA1 873 0
21 * 18 Sco PM* 16 15 37.2703721200 -08 22 09.981989277   6.15 5.50     G2Va 510 0
22 * mu. Ara PM* 17 44 08.7036342277 -51 50 02.591049123   5.85 5.15     G3IV-V 480 2
23 HD 162396 PM* 17 52 52.5828939517 -41 59 47.487625525   6.74 6.20     F9VFe-0.7CH-0.4 111 0
24 HD 199288 PM* 20 57 40.0679487434 -44 07 45.739637893   7.11 6.52     G2VFe-1.0 176 0
25 * nu. Ind ** 22 24 36.8855638745 -72 15 19.494501994   5.94 5.29     G9VFe-3.1CH-1.5 253 0
26 HD 215257 PM* 22 43 50.7183139841 +03 53 12.629544211   7.93   7.1   F5V 140 0
27 NAME Galactic Bulge reg ~ ~           ~ 3576 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2016A&A...595A..18G and select 'bookmark this link' or equivalent in the popup menu


2021.05.09-06:40:20

© Université de Strasbourg/CNRS

    • Contact