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The Gaia Radial Velocity Spectrometer (RVS) provides a sample of 7,224,631 stars with full six-dimensional phase space information. Bayesian distances of these stars are available from the catalogue of Sch\"onrich et al. (2019). We exploit…

Astrophysics of Galaxies · Physics 2019-08-21 A. Everall , N. W. Evans , V. Belokurov , R. Schönrich

The Gaia satellite has already provided the astronomical community with three data releases, and the Radial Velocity Spectrometer (RVS) on board Gaia has provided the radial velocity for 33 million stars. When deriving the radial velocity…

The Gaia DR2 radial velocity sample (GDR2RVS), which provides six-dimensional phase-space information on 7.2 million stars, is of great value for inferring properties of the Milky Way. Yet a quantitative and accurate modelling of this…

Instrumentation and Methods for Astrophysics · Physics 2020-10-28 Jan Rybizki , Hans-Walter Rix , Markus Demleitner , Coryn Bailer-Jones , William J. Cooper

Since 1999, a radial velocity survey of 179 red giant stars is ongoing at Lick Observatory with a one month cadence. At present ~20-100 measurements have been collected per star with an accuracy of 5 to 8 m/s. Of the stars monitored, 145…

Astrophysics · Physics 2008-11-26 S. Hekker , I. A. G. Snellen , C. Aerts , A. Quirrenbach , S. Reffert , D. S. Mitchell

With the Sixth Data Release of the Sloan Digital Sky Survey, the imaging of the Northern Galactic Cap is now complete. The survey contains images and parameters of roughly 287 million objects over 9583 deg^2, and 1.27 million spectra of…

Astrophysics · Physics 2019-08-13 Jennifer K. Adelman-McCarthy

(Abridged) We present results from 13776 radial-velocity (RV) measurements of 1278 candidate members of the old (4 Gyr) open cluster M67 (NGC 2682). The measurements are the results of a long-term survey that includes data from seven…

Solar and Stellar Astrophysics · Physics 2015-09-16 Aaron M. Geller , David W. Latham , Robert D. Mathieu

The most accurate 6D phase-space information from the Radial Velocity Experiment (RAVE) was used to integrate the orbits of 105 stars around the galactic globular cluster 47 Tucanae, to look for close encounters between them in the past,…

Astrophysics of Galaxies · Physics 2016-07-27 J. G. Fernández-Trincado , A. C. Robin , C. Reylé , K. Vieira , M. Palmer , E. Moreno , O. Valenzuela , B. Pichardo

A magnitude limited population of 18 808 Hipparcos stars is used to calibrate distances for 52 794 RAVE stars, including dwarfs, giants, and pre-main sequence stars. I give treatments for a number of types of bias affecting calculation,…

Astrophysics of Galaxies · Physics 2014-05-13 Charles Francis

Gaia DR3 publishes a catalogue of full-sky RR Lyrae stars (RRLs) observed during the initial 34 months of science operations, that were processed through the Specific Object Study (SOS) pipeline for Cepheids and RRLs (SOS Cep&RRL) observed…

Among the myriad of data collected by the ESA Gaia satellite, about 150 million spectra will be delivered by the Radial Velocity Spectrometer (RVS) for stars as faint as G_RVS~16. A specific stellar parametrization will be performed for…

This document is divided in two parts. The first part deals with the radial velocities (RV) distributions for B-type stars and nebulosities observed with the VLT-GIRAFFE in the Large and Small Magellanic Clouds towards the open clusters…

The early third data release (EDR3) of the European Space Agency satellite Gaia provides coordinates, parallaxes, and proper motions for ~1.47 billion sources in our Milky Way, based on 34 months of observations. The combination of Gaia DR2…

Astrophysics of Galaxies · Physics 2021-03-17 Tommaso Marchetti

The Gaia mission is a magnitude-limited whole-sky survey that collects an impressive quantity of astrometric, spectro-photometric and spectroscopic data. Among all the on-board instruments, the Radial Velocity Spectrometer (RVS) produces…

Solar and Stellar Astrophysics · Physics 2021-10-27 G. Contursi , P. de Laverny , A. Recio-Blanco , P. A. Palicio

We present the 2nd version of the Catalogue of Radial Velocities with Astrometric Data (CRVAD-2). This is the result of the cross-identification of stars from the All-Sky Compiled Catalogue of 2.5 Million Stars (ASCC-2.5) with the General…

Astrophysics · Physics 2016-08-14 N. V. Kharchenko , R. -D. Scholz , A. E. Piskunov , S. Röser , E. Schilbach

We present 5201 radial-velocity measurements of 1144 stars, as part of an ongoing study of the young (150 Myr) open cluster M35 (NGC 2168). We have observed M35 since 1997, using the Hydra Multi-Object Spectrograph on the WIYN 3.5m…

Solar and Stellar Astrophysics · Physics 2015-05-14 Aaron M. Geller , Robert D. Mathieu , Ella K. Braden , Soren Meibom , Imants Platais , Christopher J. Dolan

The third data release (DR3) of the European Space Agency satellite Gaia provides coordinates, parallaxes, proper motions, and radial velocities for a sample of $\sim 34$ million stars. We use the combined 6-dimensional phase space…

Astrophysics of Galaxies · Physics 2022-07-06 Tommaso Marchetti , Fraser A. Evans , Elena Maria Rossi

Gaia DR2 5932173855446728064 was recently proposed to be unbound from the Milky Way based on the $-614.3\pm2.5\;\mathrm{km}\;\mathrm{s}^{-1}$ median radial velocity given in Gaia DR2. We obtained eight epochs of spectroscopic follow-up and…

The 6dF Galaxy Survey is measuring around 150000 redshifts and 15000 peculiar velocities from galaxies over the southern sky at |b|>10 degrees. When complete, it will be the largest survey of its kind by more than an order of magnitude.…

Astrophysics · Physics 2009-11-11 D. Heath Jones , Will Saunders , Mike Read , Matthew Colless

We report new constraints on the local escape speed of our Galaxy. Our analysis is based on a sample of high velocity stars from the RAVE survey and two previously published datasets. We use cosmological simulations of disk galaxy formation…