Evidence of a large scale positive rotation-metallicity correlation in the Galactic thick disk

Abstract

This study is based on high quality astrometric and spectroscopic data from the most recent releases by Gaia and APOGEE. We select $58882$ thin and thick disk red giants, in the Galactocentric (cylindrical) distance range $5<R<13$~kpc and within $|z|<3$~kpc, for which full chemo-kinematical information is available. Radial chemical gradients, $\partial [M/H]/\partial \mathrm{R}$, and rotational velocity-metallicity correlations, $\partial V_{\varphi }/\partial [M/H]$, are re-derived firmly uncovering that the thick disk velocity-metallicity correlation maintains its positiveness over the $8$~kpc range explored. This observational result is important as it sets experimental constraints on recent theoretical studies on the formation and evolution of the Milky Way disk and on cosmological models of Galaxy formation.

Accepted for publication in Monthly Notices of the Royal Astronomical Society

References in corpus (13)

• Gaia Data Release 2. Summary of the contents and survey properties
• Gaia Data Release 2: The astrometric solution
• The mass distribution and gravitational potential of the Milky Way
• The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
• The Gaia-ESO Survey: the Galactic Thick to Thin Disc transition
• New H-band Stellar Spectral Libraries for the SDSS-III/APOGEE survey
• Understanding inverse metallicity gradients in galactic discs as a consequence of inside-out formation
• The relationship between mono-abundance and mono-age stellar populations in the Milky Way disk
• Chemical separation of disc components using RAVE
• Metallicity Gradients of Thick Disk Dwarf Stars
• The Rotation-Metallicity Relation for the Galactic Disk as Measured in the Gaia DR1 TGAS and APOGEE Data
• Cardinal kinematics: I. Rotation fields of the APOGEE Survey
• Metallicity Gradient of the Thick Disc Progenitor at High Redshift

Cited by in corpus (7)

• Gaia Data Release 3: Chemical cartography of the Milky Way
• Testing dark matter and geometry sustained circular velocities in the Milky Way with Gaia DR2
• The chemical signature of the Galactic spiral arms revealed by Gaia DR3
• The Pristine survey XIII: Uncovering the very metal-poor tail of the thin disc
• The chemodynamics of prograde and retrograde Milky Way stars
• Insights into the Formation and Evolution History of the Galactic Disk System
• Quantifying chemical and kinematical properties of Galactic disks