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In the thick of it: metal-poor disc stars in RAVE
G. Kordopatis, G. Gilmore, R. F. G. Wyse +17
By selecting in the RAVE-DR4 survey the stars located between 1 and 2 kpc above the Galactic plane, we question the consistency of the simplest three-component model (thin disc, th…
A new stellar chemo-kinematic relation reveals the merger history of the Milky Way disc
I. Minchev, C. Chiappini, M. Martig +27
The velocity dispersions of stars near the Sun are known to increase with stellar age, but age can be difficult to determine so a proxy like the abundance of alpha elements (e.g.,…
A RAVE Investigation on Galactic open Clusters I. Radial velocities and metallicities
C. Conrad, R. -D. Scholz, N. V. Kharchenko +25
Context. Galactic open clusters (OCs) mainly belong to the young stellar population in the Milky Way disk, but are there groups and complexes of OCs that possibly define an additio…
Chromospherically Active Stars in the RAVE Survey. I. The Catalogue
M. Žerjal, T. Zwitter, G. Matijevič +15
RAVE, the unbiased magnitude limited survey of the southern sky stars, contained 456,676 medium-resolution spectra at the time of our analysis. Spectra cover the CaII IRT range whi…
The RAVE survey: the Galactic escape speed and the mass of the Milky Way
T. Piffl, C. Scannapieco, J. Binney +22
We construct new estimates on the Galactic escape speed at various Galactocentric radii using the latest data release of the Radial Velocity Experiment (RAVE DR4). Compared to prev…
Choirs, HI Galaxy Groups: Catalogue and Detection of Star-forming Dwarf Group Members
Sarah M. Sweet, Gerhardt Meurer, Michael J. Drinkwater +24
Hα observations centred on galaxies selected from the HI Parkes All Sky Survey (HIPASS, Barnes et al. 2001) typically show one and sometimes two star-forming galaxies within the ap…
CN Anomalies in the Halo System and the Origin of Globular Clusters in the Milky Way
Daniela Carollo, Sarah Martell, Timothy Beers +1
We explore the kinematics and orbital properties of a sample of red giants in the halo system of the Milky Way that are thought to have formed in globular clusters, based on their…
Slipher and the Nature of the Nebulae
K. C. Freeman
Why do some discoveries, which appear in hindsight to be obviously major discoveries, have so little impact when they were made. These are discoveries that were ahead of their time…