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12 papers · 2 filters
The Dawning of the Stream of Aquarius in RAVE
Mary E. K. Williams, Matthias Steinmetz, Sanjib Sharma +22
We identify a new, nearby (0.5 < d < 10 kpc) stream in data from the RAdial Velocity Experiment (RAVE). As the majority of stars in the stream lie in the constellation of Aquarius…
No evidence for internal rotation in the remnant core of the Sagittarius dwarf
Jorge Penarrubia, Daniel B. Zucker, Mike J. Irwin +6
We have conducted a spectroscopic survey of the inner regions of the Sagittarius (Sgr) dwarf galaxy using the AAOmega spectrograph on the Anglo-Australian Telescope. We determine r…
Detection of a radial velocity gradient in the extended local disc with RAVE
A. Siebert, B. Famaey, I. Minchev +22
Using a sample of 213,713 stars from the Radial Velocity Experiment (RAVE) survey, limited to a distance of 2 kpc from the Sun and to |z|<1 kpc, we report the detection of a veloci…
Local Stellar Kinematics from RAVE Data: I. Local Standard of Rest
B. Coskunoglu, S. Ak, S. Bilir +19
We analyze a sample of 82850 stars from the RAVE survey, with well-determined velocities and stellar parameters, to isolate a sample of 18026 high-probability thin-disc dwarfs with…
High star formation rates as the origin of turbulence in early and modern disk galaxies
Andrew W. Green, Karl Glazebrook, Peter J. McGregor +6
High spatial and spectral resolution observations of star formation and kinematics in early galaxies have shown that two-thirds are massive rotating disk galaxies with the remainde…
Testing formation mechanisms of the Milky Way's thick disc with RAVE
Michelle Wilson, Amina Helmi, H. L. Morrison +21
We study the eccentricity distribution of a thick disc sample of stars observed in the Radial Velocity Experiment (RAVE) and compare it to that expected in four simulations of thic…