Hostname: page-component-cb9f654ff-w5vf4 Total loading time: 0 Render date: 2025-08-08T20:12:49.861Z Has data issue: false hasContentIssue false
  • English
  • Français

The chemical evolution of the Galactic thick and thindisks

Published online by Cambridge University Press:  15 February 2011

C. Turon ,
F. Meynadier ,
F. Arenou  and
C. Chiappini
C. Chiappini*
Affiliation:
Geneva Observatory, Geneva Univ., Switzerland. e-mail: Cristina.Chiappini@unige.ch Osservatorio Astronomico di Trieste, INAF, Italy
Get access

Abstract

Many are the proposed scenarios for the formation of the thick disk of the Milky Way,going from the merger with smaller galaxies to fast gas accretion in the early Universe.Crucial information on which was the dominant mechanism for the formation of the thickdisk and other Galactic components is encoded in the chemical properties of their stars.By comparing the chemical properties of bulge, thick and thin disk stars one can addressthe question of which, among the competing processes of dissipation, satellite accretionand radial migration, play the dominant role in the formation of the different Galacticcomponents. The main difficulty at present is that current data samples suffer fromselection biases. Gaia shall bring a quantum leap to the solution of this problem, byproviding fiducial samples of the different galactic components with both, chemical andfull kinematic information. To pave the road for Gaia, theoretical models need to beimproved by taking into account both chemistry and dynamical aspects. A work of this kindis underway in Geneva Observatory.

Information

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 45: GAIA: At the Frontiers of Astrometry , 2010 , pp. 293 - 298
Copyright
© EAS, EDP Sciences 2011

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Références

Asplund, M., Grevesse, N., Sauval, A., et al., 2009, ARA&A, 47, 1, 481 CrossRef
Barbuy, B., Trevisan, M., Gustafsson, B., et al., 2010, in “Light Elements in the Universe”, Proceedings of the International Astronomical Union, IAU Symposium, 268, 325
Bournaud, F., Elmegree, B.G., & Martig, M., 2009, ApJ, 707, L1 CrossRef
Alvez-Brito, A., Meléndez, J., Asplund, M., et al., 2010, A&A, 513, id.A35
Brunetti, M., Chiappini, C., & Pfenniger, D., 2010, A&A, submitted
Cescutti, G., Matteucci, F., McWilliam, A., & Chiappini, C., 2009, A&A, 505, 605
Chiappini, C., 2009, in “The Galaxy Disk in Cosmological Context”, Proceedings of the International Astronomical Union, IAU Symposium, 254, ed. J. Andersen, J. Bland-Hawthorn, and B. Nordström, 191
da Silva, L., Girardi, L., Pasquini, L., et al., 2006, A&A, 458, 609
Fuhrmann, , 2008, MNRAS, 384, 174
Grenon, M., 1999, Astrophys. Space Science, 265, 331 CrossRef
Haywood, M., 2008, MNRAS, 388, 1175 CrossRef
Matteucci, F., 2008, in “The Origin of the Galaxy and the Local Group”, Proceedings of the 37th Saas-Fee Advanced Course of the Swiss Society for Astrophysics and Astronomy, ed. E. Grebel and B. Moore, in press
Meléndez, , et al., 2008, A&A, 484, L21
Pettini, M., 2009, in “The Galaxy Disk in Cosmological Context”, Proceedings of the International Astronomical Union, IAU Symposium, 254, ed. J. Andersen, J. Bland-Hawthorn, and B. Nordström, 21
Shoenrich, R., & Binney, J., 2009, MNRAS, 399, 1145 CrossRef
Soubiran, C., Bienaymé, O., Mishenina, T.V., & Kovtyukh, V.V., 2008, A&A, 480, 91
Turon, C., Primas, F., Binney, J. Chiappini, C., et al., 2008, “Galactic Populations, Chemistry and Dynamics”, ESA-ESO Working Group report 4, 177
Veltz, L., Bienaymé, O., Freeman, K.C., et al., 2008, A&A, 480, 753