2011A&A...526A.103D


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.10CEST02:33:07

2011A&A...526A.103D - Astronomy and Astrophysics, volume 526A, 103-103 (2011/2-1)

Chemical composition of the Taurus-Auriga association.

D'ORAZI V., BIAZZO K. and RANDICH S.

Abstract (from CDS):

The Taurus-Auriga association is perhaps the most famous prototype of a low-mass star forming region, surveyed at almost all wavelengths. Unfortunately, like several other young clusters/associations, this T association lacks an extensive abundance analysis determination. We present a high-resolution spectroscopic study of seven low-mass members of Taurus-Auriga, including both weak-lined and classical T Tauri stars designed to help robustly determine their metallicity. After correcting for spectral veiling, we performed equivalent width and spectral synthesis analyses using the GAIA set of model atmospheres and the 2002 version of the code MOOG. We find a solar metallicity, obtaining a mean value of [Fe/H]=-0.01±0.05. The α-element Si and the Fe-peak one Ni confirm a solar composition. Our work shows that the dispersion among members is well within the observational errors at variance with previous claims. As in other star forming regions, no metal-rich members are found, reinforcing the idea that old planet-host stars form in the inner part of the Galactic disc and subsequently migrate.

Abstract Copyright:

Journal keyword(s): stars: abundances - open clusters and associations: individual: Taurus-Auriga

Simbad objects: 15

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Number of rows : 15

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 V* V1023 Tau Or* 04 18 47.0296109602 +28 20 07.490327496   14.31 12.00 11.21   K7 141 0
2 V* BP Tau Or* 04 19 15.8342975037 +29 06 26.929456808   13.13 12.12 11.89   K5/7Ve 599 0
3 HD 285751 TT* 04 23 41.3219281196 +15 37 54.899767190   12.42 11.56     K2V: 41 0
4 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1217 0
5 V* V826 Tau TT* 04 32 15.8394065935 +18 01 38.751126168   13.51 12.074   10.312 K7.0 164 0
6 V* V1325 Tau TT* 04 38 13.0523414917 +20 22 46.839665447   13.33 12.22 11.81   K2 27 0
7 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3479 0
8 V* GM Aur Or* 04 55 10.9813656049 +30 21 59.375978047 14.59 14.22 13.10     K3Ve 552 0
9 HD 282630 Or* 04 55 36.9698052301 +30 17 55.100440086   12.17 11.12 10.55   K0Ve 150 0
10 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1977 1
11 NAME Trapezium Cluster As* 05 35 16.5 -05 23 14           ~ 1467 1
12 NAME Ori Complex Cld 05 35.3 -05 23           ~ 334 0
13 IC 2391 OpC 08 40 32 -53 02.0           ~ 714 0
14 IC 2602 OpC 10 42 58 -64 24.0           ~ 549 0
15 NAME Cha Dark Cloud SFR 11 55 -78.0           ~ 557 1

    Equat.    Gal    SGal    Ecl

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2020.07.10-02:33:07

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