VizieR Online Data Catalog: Abundances for 79 Sun-like stars within 100pc (Bedell+, 2018)
Abstract
To achieve sufficient signal-to-noise for high-precision abundance work, we stacked >=50 observations for each star. All spectra were taken with the High Accuracy Radial velocity Planet Searcher (HARPS) spectrograph on the 3.6m telescope of the European Southern Observatory (ESO), located at La Silla Observatory in Chile; with resolving power R=115000 and wavelength coverage between 378-691nm. A majority of the selected sample were observed by us in the course of a large ESO observing program on HARPS (Melendez+ 2015Msngr.161...28M). Other stars had a sufficient number of publicly available spectra in the online ESO Science Archive Facility.
The solar reference spectrum used in this work was created by combining multiple exposures of sunlight reflected from the asteroid Vesta. It was continuum-normalized in the same manner as the target spectra and has S/N~1300/pix at 600nm. Spectra previously obtained with the MIKE spectrograph and analyzed in Ramirez+ (2014A&A...572A..48R) were also used in some parts of this analysis. These spectra have S/N~400/pix at 600nm, resolution R=83000-65000 (on blue/red CCDs), and wavelength coverage between 320 and 1000nm. (2 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- August 2019
- DOI:
- 10.26093/cds/vizier.18650068
- Bibcode:
- 2019yCat..18650068B
- Keywords:
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- Abundances;
- Equivalent widths;
- Stars: G-type;
- Spectra: optical