The Sixth Data Release of the Radial Velocity Experiment (R ave). II. Stellar Atmospheric Parameters, Chemical Abundances, and Distances

Date

2020

Authors

Steinmetz, Matthias
Guiglion, Guillaume
McMillan, P
Matijevič, Gal
Enke, Harry
Kordopatis, Georges
Zwitter, T
Valentini, Marica
Chiappini, C
Casagrande, Luca

Journal Title

Journal ISSN

Volume Title

Publisher

University of Chicago Press

Abstract

We present part 2 of the sixth and final Data Release (DR6) of the Radial Velocity Experiment (Rave), a magnitude-limited ($9\lt I\lt 12$) spectroscopic survey of Galactic stars randomly selected in Earth's southern hemisphere. The Rave medium-resolution spectra (R ∼ 7500) cover the Ca triplet region (8410–8795 Å) and span the complete time frame from the start of Rave observations on 2003 April 12 to their completion on 2013 April 4. In the second of two publications, we present the data products derived from 518,387 observations of 451,783 unique stars using a suite of advanced reduction pipelines focusing on stellar atmospheric parameters, in particular purely spectroscopically derived stellar atmospheric parameters (${T}_{\mathrm{eff}}$, $\mathrm{log}g$, and the overall metallicity), enhanced stellar atmospheric parameters inferred via a Bayesian pipeline using Gaia DR2 astrometric priors, and asteroseismically calibrated stellar atmospheric parameters for giant stars based on asteroseismic observations for 699 K2 stars. In addition, we provide abundances of the elements Fe, Al, and Ni, as well as an overall [α/Fe] ratio obtained using a new pipeline based on the GAUGUIN optimization method that is able to deal with variable signal-to-noise ratios. The Rave DR6 catalogs are cross-matched with relevant astrometric and photometric catalogs, and are complemented by orbital parameters and effective temperatures based on the infrared flux method. The data can be accessed via the Rave website (http://rave-survey.org) or the Vizier database.

Description

Keywords

Surveys, Sky surveys, Milky Way Galaxy, Milky Way dynamics, Galaxy stellar content, Stellar populations, Catalogs

Citation

Source

Astronomical Journal

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

Creative Commons Attribution License

DOI

10.3847/1538-3881/ab9ab8

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