VizieR Online Data Catalog: Stellar parameters & abund. from BACCHUS analysis (Jonsson+, 2018)
Abstract
We have observed a sample of 100 stars using the optical spectrometer ARCES (R~32000) on the Apache Point 3.5 m telescope. The stars were chosen from the APOGEE catalog to have a spread in stellar parameters, and include both dwarfs and giants with a wide range of metallicities. The stars have 0.0<V<11.1 and the spectra have an S/N that ranges from 50=<S/N=<300, with a median S/N of 115 around 6000 Å. For determination of the stellar parameters as well as the abundances of O, Na, Mg, Al, Si, S, K, Ca, Ti, V, Cr, Mn, Co, Ni, Cu, Rb, and Y, we used the Brussels Automatic Code for Characterizing High AccUracy Spectra (henceforth BACCHUS; Masseron et al. 2016ascl.soft05004M). BACCHUS is a stellar parameter and abundance analysis pipeline that uses Turbospectrum in combination with MARCS spherical 1D LTE models. The model atmosphere grid is alpha-enhanced for the lower metallicities according to the "standard" MARCS scheme. The stellar parameters are determined in the classical way, demanding excitation and ionization equilibrium using a set of Fe I and Fe II lines. The analysis performed is similar to that described in Hawkins et al. (2015MNRAS.447.2046H), with the exception of the line list used: here we used the Gaia-ESO line list (v.5, U. Heiter et al. 2015PhyS...90e4010H, 2018, in preparation), complemented with line information from the VALD database (Kupka et al. 2000BaltA...9..590K; Ryabchikova et al. 2015PhyS...90e4005R) for the non-covered wavelength regimes in the Gaia-ESO list.
(3 data files).- Publication:
-
VizieR Online Data Catalog
- Pub Date:
- March 2019
- DOI:
- 10.26093/cds/vizier.51560126
- Bibcode:
- 2019yCat..51560126J
- Keywords:
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- Stars: dwarfs;
- Stars: giant;
- Abundances;
- Effective temperatures;
- Models