2008A&A...480..889S


C.D.S. - SIMBAD4 rel 1.7 - 2019.07.23CEST18:44:22

2008A&A...480..889S - Astronomy and Astrophysics, volume 480, 889-897 (2008/3-4)

Chemical abundances in six nearby star-forming regions. Implications for galactic evolution and planet searches around very young stars.

SANTOS N.C., MELO C., JAMES D.J., GAMEIRO J.F., BOUVIER J. and GOMES J.I.

Abstract (from CDS):

In this paper we present a study of chemical abundances in six star-forming regions. Stellar parameters and metallicities are derived using high-resolution, high S/N spectra of weak-line T-Tauri stars in each region. The results show that nearby star-forming regions have a very small abundance dispersion (only 0.033dex in [Fe/H]). The average metallicity found is slightly below that of the Sun, although compatible with solar once the errors are taken into account. The derived abundances for Si and Ni show that the observed stars have the abundances typical of Galactic thin disk stars of the same metallicity. The impact of these observations is briefly discussed in the context of the Galactic chemical evolution, local inter-stellar medium abundances, and in the origin of metal-rich stars in the solar neighbourhood (namely, stars more likely to harbour planets). The implication for future planet-search programmes around very young, nearby stars is also discussed.

Abstract Copyright:

Journal keyword(s): planetary systems: formation - ISM: abundances - stars: abundances - Galaxy: abundances - solar neighborhood - stars: formation

Simbad objects: 28

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Number of rows : 28

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 NAME Hyades OpC 04 26 54.00 +15 52 00.0           ~ 2555 0
2 NAME Taurus Dark Cloud SFR 04 41.0 +25 52           ~ 3267 0
3 V* V1361 Tau TT* 05 21 46.8377382150 +24 00 44.453197391   11.49 10.516 9.77 9.381 K3 13 0
4 2MASS J05345439-0517211 pr* 05 34 54.4012001297 -05 17 21.228728452   19.382 18.174   14.410 M5 23 0
5 V* KM Ori TT* 05 34 55.9722690466 -05 23 13.040121857 14.142 12.883 11.918   10.064 K5Ve 82 0
6 M 42 HII 05 35 17.3 -05 23 28           ~ 3639 0
7 V* V1229 Ori Or* 05 35 18.3727420 -05 22 37.429392 15.941 14.257 13.251   10.987 K0 77 0
8 Brun 676 * 05 35 22.2635055702 -05 20 29.256675755 15.523 14.142 13.260   11.719 K3 37 0
9 2MASS J05365005+1337563 TT* 05 36 50.0568812701 +13 37 56.145344580   11.29 10.576   9.413 K0V 16 0
10 HD 245924 TT* 05 39 30.932 +23 06 33.36     9.580   8.482 K0IV 10 0
11 2MASS J11401658-8321003 TT* 11 40 16.6137304970 -83 21 00.348619751   12.46 11.484   10.132 K4Ve 24 0
12 V* DW Cha BY* 11 58 28.1599177302 -77 54 29.528939536   11.63 10.502   9.011 K4Ve 36 1
13 RX J1159.7-7601 TT* 11 59 42.2712277320 -76 01 26.175720428   12.46 11.11   9.858 K4Ve 44 0
14 NAME Chamaeleon Region SFR 12 00 -79.0           ~ 165 1
15 HD 104467 TT* 12 01 39.1114993208 -78 59 16.909916962   9.26 8.466   7.678 G3V(e) 47 0
16 HD 109138 TT* 12 33 29.7897234458 -75 23 11.249062020   10.24 9.47     K0V 33 0
17 CD-34 10180 TT* 15 07 14.8172446543 -35 04 59.526302155 11.84 11.37 10.662 10.02 9.631 K0IVe 28 0
18 V* MM Lup TT* 15 23 25.667 -40 55 45.45 13.60 12.90 11.87 11.24 10.71 K2 15 0
19 CD-35 10498 TT* 15 46 41.2046924136 -36 18 47.437909861 12.21 12.24 11.21 10.00 9.44 K1e 18 0
20 CD-39 10162 TT* 15 47 41.7650421526 -40 18 26.747553263 12.58 12.33 11.158 10.75 10.047 K1e 23 0
21 V* MZ Lup TT* 16 01 08.9697537283 -33 20 14.179282859 12.11 11.88 10.88 10.35 9.812 G5IVe 27 0
22 NAME Lup Cloud SFR 16 03 -38.1           ~ 474 0
23 2MASS J16204596-2348208 TT* 16 20 45.9586954438 -23 48 20.906803470           K4 18 0
24 NAME rho Oph Complex reg 16 25 -23.5           ~ 76 1
25 CD-37 12759 TT* 18 39 05.2882620305 -37 26 21.827706382   11.96 10.98     K1 13 0
26 2MASS J18572084-3643005 TT* 18 57 20.8421320176 -36 43 00.646621868   11.77 11.16     G5IV 10 0
27 V* V702 CrA Or* 19 02 01.9776706221 -37 07 43.521814188   11.28 10.512   9.512 G5e 37 0
28 NAME CrA Complex reg 19 15 00.0 -37 30 00           ~ 100 1

    Equat.    Gal    SGal    Ecl

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2019.07.23-18:44:22

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