output
19932026
most citedGaia Data Release 2. Summary of the contents and survey properties

8.6k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2012 · astro-ph.GAShow all

13 papers · 2 filters

astro-ph.GA2012★ 52 cited

Does the Sagittarius Stream constrain the Milky Way halo to be triaxial?

Rodrigo Ibata, Geraint F. Lewis, Nicolas F. Martin +2

Recent analyses of the stellar stream of the Sagittarius dwarf galaxy have claimed that the kinematics and three-dimensional location of the M-giant stars in this structure constra…

astro-ph.GA2012★ 142 cited

ARGOS II: The Galactic Bulge Survey

K. Freeman, M. Ness, E. Wylie de Boer +8

We describe the motivation, field locations and stellar selection for the ARGOS spectroscopic survey of 28,000 stars in the bulge and inner disk of the Milky Way galaxy across lati…

astro-ph.GA2012★ 12 cited

Approximate integrals of motion

Olivier Bienaymé, Gregor Traven

We determine approximate numerical integrals of motion of 2D symmetric Hamiltonian systems. We detail for a few gravitational potentials the conditions under which quasi-integrals…

astro-ph.GA2012★ 110 cited

A sensitive survey for 13CO, CN, H2CO and SO in the disks of T Tauri and Herbig Ae stars

S. Guilloteau, E. Di Folco, A. Dutrey +3

We use the IRAM 30-m telescope to perform a sensitive search for CN N=2-1 in 42 T Tauri or Herbig Ae systems located mostly in the Taurus-Auriga region. CO J=2-1 is observed…

astro-ph.GA2012★ 49 cited

A Pan-STARRS1 View of the Bifurcated Sagittarius Stream

C. T. Slater, E. F. Bell, E. F. Schlafly +12

We use data from the Pan-STARRS1 survey to present a panoramic view of the Sagittarius tidal stream in the southern Galactic hemisphere. As a result of the extensive sky coverage o…

astro-ph.GA2012★ 45 cited

Young accreted globular clusters in the outer halo of M31

A. D. Mackey, A. P. Huxor, A. M. N. Ferguson +6

We report on Gemini/GMOS observations of two newly discovered globular clusters in the outskirts of M31. These objects, PAndAS-7 and PAndAS-8, lie at a galactocentric radius of ~87…

astro-ph.GA2012★ 158 cited

News from the Galactic suburbia: the chemical composition of the remote globular cluster NGC 2419

A. Mucciarelli, M. Bellazzini, R. Ibata +4

We present the chemical analysis of 49 giant stars of the globular cluster NGC 2419, using medium resolution spectra collected with the multi-object spectrograph DEIMOS@Keck. Previ…

astro-ph.GA2012★ 180 cited

The origin of the split red clump in the Galactic bulge of the Milky Way

M. Ness, K. Freeman, E. Athanassoula +8

Near the minor axis of the Galactic bulge, at latitudes b < -5 degrees, the red giant clump stars are split into two components along the line of sight. We investigate this split u…

astro-ph.GA2012★ 114 cited

The properties of the local spiral arms from RAVE data: two-dimensional density wave approach

A. Siebert, B. Famaey, J. Binney +19

Using the RAVE survey, we recently brought to light a gradient in the mean galactocentric radial velocity of stars in the extended solar neighbourhood. This gradient likely origina…

astro-ph.GA2012★ 191 cited

Radial Migration Does Little for Galactic Disc Thickening

I. Minchev, B. Famaey, A. C. Quillen +3

Non-axisymmetric components, such as spirals and central bars, play a major role in shaping galactic discs. An important aspect of the disc secular evolution driven by these pertur…

astro-ph.GA2012★ 75 cited

Kinematic groups beyond the Solar neighbourhood with RAVE

T. Antoja, A. Helmi, O. Bienayme +18

We analyse the kinematics of disc stars observed by the RAVE survey in and beyond the Solar neighbourhood.We detect significant overdensities in the velocity distributions using a…

astro-ph.GA2012★ 206 cited

Evolution of Galactic Discs: Multiple Patterns, Radial Migration and Disc Outskirts

I. Minchev, B. Famaey, A. C. Quillen +5

We investigate the evolution of galactic disks in N-body Tree-SPH simulations. We find that disks, initially truncated at three scale-lengths, can triple their radial extent, solel…

astro-ph.GA2012★ 115 cited

The Resolved Structure and Dynamics of an Isolated Dwarf Galaxy: A VLT and Keck Spectroscopic Survey of WLM

Ryan Leaman, Kim A. Venn, Alyson M. Brooks +7

We present spectroscopic data for 180 red giant branch stars in the isolated dwarf irregular galaxy WLM. Observations of the Calcium II triplet lines in spectra of RGB stars coveri…