6 papers · 1 filter
Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18
F. Anders, A. Khalatyan, C. Chiappini +19
Combining the precise parallaxes and optical photometry delivered by Gaia's second data release (Gaia DR2) with the photometric catalogues of PanSTARRS-1, 2MASS, and AllWISE, we de…
Kinematics with Gaia DR2: The Force of a Dwarf
I. Carrillo, I. Minchev, M. Steinmetz +10
We use Gaia DR2 astrometric and line-of-sight velocity information combined with two sets of distances obtained with a Bayesian inference method to study the 3D velocity distributi…
The escape speed curve of the Galaxy obtained from Gaia DR2 implies a heavy Milky Way
Giacomo Monari, Benoit Famaey, Ismael Carrillo +6
We measure the escape speed curve of the Milky Way based on the analysis of the velocity distribution of counter-rotating halo stars from the Gaia DR2. The distances we…
Spiral arm crossings inferred from ridges in Gaia stellar velocity distributions
Alice C. Quillen, Ismael Carrillo, Friedrich Anders +7
The solar neighborhood contains disc stars that have recently crossed spiral arms in the Galaxy. We propose that boundaries in local velocity distributions separate stars that have…
Correlations between age, kinematics, and chemistry as seen by the RAVE survey
Jennifer Wojno, Georges Kordopatis, Matthias Steinmetz +20
We explore the connections between stellar age, chemistry, and kinematics across a Galactocentric distance of , using a sample of inte…
Estimating stellar birth radii and the time evolution of the Milky Way's ISM metallicity gradient
I. Minchev, F. Anders, A. Recio-Blanco +14
We present a semi-empirical, largely model-independent approach for estimating Galactic birth radii, r_birth, for Milky Way disk stars. The technique relies on the justifiable assu…