The Gaia-ESO Survey: Low-α element stars in the Galactic bulge

A.R.B., P.d.L., and V.H. acknowledge financial support form the ANR 14-CE33-014-01. This work was partly supported by the European Union FP7 programme through ERC grant number 320360 and by the Leverhulme Trust through grant RPG-2012-541. We acknowledge the support from INAF and Ministero dell’Istruzione, dell’Universita e della Ricerca (MIUR) in the form of the grant “Premiale VLT 2012”. The results presented here benefit from discussions held during the Gaia-ESO workshops and conferences supported by the ESF (European Science Foundation) through the GREAT Research Network Programme. M. Zoccali gratefully acknowledge support by the Ministry of Economy, Development, and Tourism’s Millenium Science Initiative through grant IC120009, awarded to the Millenium Institute of Astrophysics (MAS), by Fondecyt Regular 1150345 and by the BASAL-CATA Center for Astrophysics and Associated Technologies PFB-06.

[1]  Sergey E. Koposov,et al.  The Gaia-ESO Survey: Exploring the complex nature and origins of the Galactic bulge populations , 2017, 1704.03325.

[2]  J. Brinkmann,et al.  Baade's window and APOGEE. Metallicities, ages, and chemical abundances , 2017, 1702.01547.

[3]  D. A. García-Hernández,et al.  APOGEE chemical abundances of globular cluster giants in the inner Galaxy , 2016, 1611.03086.

[4]  D. Minniti,et al.  The GIRAFFE Inner Bulge Survey (GIBS) III. Metallicity distributions and kinematics of 26 Galactic bulge fields , 2016, 1610.09174.

[5]  C. Prieto,et al.  Chemical tagging with APOGEE: Discovery of a large population of N-rich stars in the inner Galaxy , 2016, 1606.05651.

[6]  A. Calamida,et al.  Hiding its age: the case for a younger bulge , 2016, 1606.04092.

[7]  D. A. García-Hernández,et al.  DISCOVERY OF A METAL-POOR FIELD GIANT WITH A GLOBULAR CLUSTER SECOND-GENERATION ABUNDANCE PATTERN , 2016, 1604.01279.

[8]  D. Minniti,et al.  The Giraffe Inner Bulge Survey (GIBS) II. Metallicity distributions and alpha element abundances at fixed Galactic latitude , 2015, 1508.02576.

[9]  M. Lehnert,et al.  Why the Milky Way's bulge is not only a bar formed from a cold thin disk , 2014, 1411.1416.

[10]  M. Schultheis,et al.  The Gaia-ESO Survey: metallicity and kinematic trends in the Milky Way bulge , 2014, 1408.4558.

[11]  D. Katz,et al.  Mapping a stellar disk into a boxy bulge: The outside-in part of the Milky Way bulge formation , 2014, 1404.0304.

[12]  G. Wallerstein,et al.  CHEMISTRY OF THE SAGITTARIUS DWARF GALAXY: A TOP-LIGHT INITIAL MASS FUNCTION, OUTFLOWS, AND THE R-PROCESS , 2013, 1309.2974.

[13]  O. Gerhard,et al.  METALLICITY GRADIENTS THROUGH DISK INSTABILITY: A SIMPLE MODEL FOR THE MILKY WAY'S BOXY BULGE , 2013, 1302.1613.

[14]  T. Beers,et al.  VERY METAL-POOR STARS IN THE OUTER GALACTIC BULGE FOUND BY THE APOGEE SURVEY , 2013, 1301.1367.

[15]  G. Lewis,et al.  ARGOS - III. Stellar populations in the Galactic bulge of the Milky Way , 2012, 1212.1540.

[16]  A. Gal-Yam,et al.  Chemical evolution of the Galactic bulge as traced by microlensed dwarf and subgiant stars - V. Evidence for a wide age distribution and a complex MDF , 2012, 1211.6848.

[17]  Anthony G. A. Brown,et al.  The Gaia-ESO Public Spectroscopic Survey , 2012 .

[18]  C. Babusiaux,et al.  The metallicity distribution of bulge clump giants in Baade’s window , 2011, 1107.5199.

[19]  Garching,et al.  Na-O anticorrelation and HB - VIII. Proton-capture elements and metallicities in 17 globular clusters from UVES spectra , 2009, 0909.2941.

[20]  S. Ortolani,et al.  VLT-FLAMES Analysis of 8 giants in the Bulge Metal-poor Globular Cluster NGC 6522: Oldest Cluster in the Galaxy? ⋆ Analysis of 8 giants in NGC 6522 , 2009, 0908.3603.

[21]  P. Bonifacio,et al.  A new implementation of the infrared flux method using the 2MASS catalogue , 2009, 0901.3034.

[22]  P. Wozniak,et al.  The Optical Gravitational Lensing Experiment: catalogue of stellar proper motions in the OGLE-II Galactic bulge fields , 2003, astro-ph/0305315.

[23]  P. Tissera,et al.  The effects of mergers on the formation of disc-bulge systems in hierarchical clustering scenarios , 2002, astro-ph/0208538.

[24]  R. Rich,et al.  The First Detailed Abundance Analysis of Galactic Bulge K Giants in Baade's Window , 1994 .

[25]  A. Sandage,et al.  Evidence from the motions of old stars that the Galaxy collapsed. , 1962 .

[26]  Sergey E. Koposov,et al.  Edinburgh Research Explorer The Gaia-ESO Survey: , 2018 .