The GIRAFFE Inner Bulge Survey (GIBS) - I. Survey description and a kinematical map of the Milky Way bulge

@article{Zoccali2014TheGI,
  title={The GIRAFFE Inner Bulge Survey (GIBS) - I. Survey description and a kinematical map of the Milky Way bulge},
  author={Manuela Zoccali and Oscar A. Gonzalez and Sergio V{\'a}squez and Vanessa Hill and Marina Rejkuba and Elena Valenti and Alvio Renzini and {\'A}lvaro Rojas-Arriagada and Inma Martinez-Valpuesta and C. Babusiaux and Thomas M. Brown and Dante Minniti and Andrew R. McWilliam},
  journal={Astronomy and Astrophysics},
  year={2014},
  volume={562},
  pages={1-11}
}
Context. The Galactic bulge is a massive, old component of the Milky Way. It is known to host a bar, and it has recently been demonstrated to have a pronounced boxy/peanut structure in its outer region. Several independent studies suggest the presence of more than one stellar populations in the bulge, with different origins and a relative fraction changing across the bulge area. Aims. This is the first of a series of papers presenting the results of the Giraffe Inner Bulge Survey, carried out… 

The GIRAFFE Inner Bulge Survey (GIBS) III. Metallicity distributions and kinematics of 26 Galactic bulge fields

Several recent studies have demonstrated that the Galactic bulge hosts two components with different mean metallicities, and possibly different spatial distribution and kinematics. As a consequence,

The central velocity dispersion of the Milky Way bulge

Context. Current spectroscopic and photometric surveys are providing a comprehensive view of the Milky Way bulge stellar population properties with unprecedented accuracy. This in turn allows us to

The Milky Way Bulge: Observed properties and a comparison to external galaxies

The Milky Way bulge offers a unique opportunity to investigate in detail the role that different processes such as dynamical instabilities, hierarchical merging, and dissipational collapse may have

Comparing the properties of the X-shaped bulges of NGC 4710 and the Milky Way with MUSE

We used the new ESO VLT instrument MUSE to obtain spectral and imaging coverage of NGC 4710. The wide area and excellent sampling of the MUSE integral field spectrograph allows us to investigate the

The Milky Way without X: An alternative interpretation of the double red clump in the Galactic bulge

The presence of two red clumps (RCs) in high latitude fields of the Milky Way bulge is interpreted as evidence for an X-shaped structure originated from the bar instability. Here we show, however,

The COMBS Survey - II. Distinguishing the metal-poor bulge from the halo interlopers

Abstract The metal-poor stars in the bulge are important relics of the Milky Way’s formation history, as simulations predict that they are some of the oldest stars in the Galaxy. In order to

The barred inner Milky Way: dynamical models from surveys

  • O. Gerhard
  • Physics
    Proceedings of the International Astronomical Union
  • 2017
Abstract The Milky Way is a barred galaxy whose central bulge has a box/peanut shape and consists of multiple stellar populations with different orbit distributions. This review describes dynamical

Theoretical Models of the Galactic Bulge

Near infrared images from the COBE satellite presented the first clear evidence that our Milky Way galaxy contains a boxy shaped bulge. Recent years have witnessed a gradual paradigm shift in the

The Bulge Radial Velocity Assay for RR Lyrae Stars (BRAVA-RR) DR2: A Bimodal Bulge?

The radial velocities of 2768 fundamental-mode RR Lyrae stars (RRLs) toward the southern Galactic bulge are presented, spanning the southern bulge from −8° < l < + 8° and −3° < b < −6°. Distances

KINEMATICS IN THE GALACTIC BULGE WITH APOGEE. II. HIGH-ORDER KINEMATIC MOMENTS AND COMPARISON TO EXTRAGALACTIC BAR DIAGNOSTICS

Much of the inner Milky Way’s (MW) global rotation and velocity dispersion patterns can be reproduced by models of secularly evolved, bar-dominated bulges. More sophisticated constraints, including
...

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