Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-19T06:01:57.276Z Has data issue: false hasContentIssue false
  • English
  • Français

Metallicity gradients in the Milky Way

Published online by Cambridge University Press:  09 March 2010

Walter J. Maciel  and
Roberto D. D. Costa
Walter J. Maciel
Affiliation:
University of São Paulo, Astronomy Department, Rua do Matão 1226, Cidade Universitária, São Paulo SP, CEP 05509-0900, Brazil email: [email protected], [email protected]
Roberto D. D. Costa
Affiliation:
University of São Paulo, Astronomy Department, Rua do Matão 1226, Cidade Universitária, São Paulo SP, CEP 05509-0900, Brazil email: [email protected], [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

Radial metallicity gradients are observed in the disks of the Milky Way and in several other spiral galaxies. In the case of the Milky Way, many objects can be used to determine the gradients, such as HII regions, B stars, Cepheids, open clusters and planetary nebulae. Several elements can be studied, such as oxygen, sulphur, neon, and argon in photoionized nebulae, and iron and other elements in cepheids, open clusters and stars. As a consequence, the number of observational characteristics inferred from the study of abundance gradients is very large, so that in the past few years they have become one of the main observational constraints of chemical evolution models. In this paper, we present some recent observational evidences of abundance gradients based on several classes of objects. We will focus on (i) the magnitude of the gradients, (ii) the space variations, and (iii) the evidences of a time variation of the abundance gradients. Some comments on recent theoretical models are also given, in an effort to highlight their predictions concerning abundance gradients and their variations.

Keywords

stars: abundancesISM: abundancesphotoionized nebulaeGalaxy: abundances
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S265: Chemical Abundances in the Universe: Connecting First Stars to Planets , August 2009 , pp. 317 - 324
Copyright
Copyright © International Astronomical Union 2010

References

Andrievsky, S. M., Bersier, D., Kovtyukh, V. V., et al. 2002b, A&A, 384, 140Google Scholar
Andrievsky, S. M., Kovtyukh, V. V., Luck, R. E., et al. 2002a, A&A, 381, 32Google Scholar
Andrievsky, S. M., Kovtyukh, V. V., Luck, R. E., et al. 2002c, A&A, 392, 491Google Scholar
Andrievsky, S. M., Luck, R. E., Martin, P., & Lépine, J. R. D. 2004, A&A, 413, 159Google Scholar
Bresolin, F., Gieren, W., Kudritzki, R. P., et al. 2009b, ApJ, 700, 309CrossRefGoogle Scholar
Bresolin, F., Ryan-Weber, E., et al. 2009a, ApJ, 695, 580CrossRefGoogle Scholar
Cahn, J. H., Kaler, J. B., & Stanghellini, L. 1992, A&AS, 94, 399Google Scholar
Cavichia, O., Costa, R. D. D., & Maciel, W. J. 2009, in preparationGoogle Scholar
Cescutti, G., Matteucci, F., François, P., & Chiappini, C. 2007, A&A, 462, 943Google Scholar
Chiappini, C., Matteucci, F., & Gratton, R. 1997, ApJ, 477, 765Google Scholar
Chiappini, C., Matteucci, F., & Romano, D. 2001, ApJ, 554, 1044CrossRefGoogle Scholar
Chiappini, C., Romano, D., & Matteucci, F. 2003, MNRAS, 339, 63CrossRefGoogle Scholar
Cioni, M. R. 2009, A&A, in press (astro-ph/0904.3136)Google Scholar
Colavitti, E., Cescutti, G., Matteucci, F., & Murante, G. 2009, A&A, 496, 429Google Scholar
Davies, B., Origlia, L., Kudritzki, R., et al. 2009, ApJ, 696, 2014CrossRefGoogle Scholar
Deharveng, L., Peña, M., Caplan, J., & Costero, R. 2000, MNRAS, 311, 329CrossRefGoogle Scholar
Esteban, C., Garcia-Rojas, J., Peimbert, M., et al. 2005, ApJ, 618, L95Google Scholar
Freeman, K. C. 2009, IAU Symp. 254, ed. Andersen, J. et al. , CUP, 111Google Scholar
Friel, E. D., Janes, K. A., Tavarez, M., et al. 2002, AJ, 124, 2693CrossRefGoogle Scholar
Fu, J., Hou, J. L., Hin, J., & Chang, R. X. 2009, ApJ, 696, 668CrossRefGoogle Scholar
Gutenkunst, S., Bernard-Salas, J., Pottasch, S. R., et al. 2008, ApJ, 680, 120Google Scholar
Hou, J. L., Prantzos, N., & Boissier, S. 2000, A&A, 362, 921Google Scholar
Ivezić, Z., Sesar, B., Jurić, M., et al. 2008, ApJ, 684, 2871CrossRefGoogle Scholar
Lemasle, B., François, P., Piersimoni, A., et al. . 2008, A&A, 490, 613Google Scholar
Luck, R. E., Gieren, W. P., Andrievsky, S. M., et al. 2003, A&A, 401, 939Google Scholar
Maciel, W. J. & Costa, R. D. D. 2009, IAsU Symp. 254, ed. Andersen, J. et al. , CUP, electronic publication (astro-ph/0806.3443)Google Scholar
Maciel, W. J., Costa, R. D. D., & Idiart, T. E. P. 2009, IAU Symp. 258, ed. Mamajek, E. E. et al. , electronic publication (http://abstracts.stsci.edu/IAU258/Maciel.pdf)Google Scholar
Maciel, W. J., Costa, R. D. D., & Uchida, M. M. M. 2003, A&A, 397, 667Google Scholar
Maciel, W. J., Lago, L. G., & Costa, R. D. D., 2005, A&A, 433, 127Google Scholar
Maciel, W. J., Lago, L. G., & Costa, R. D. D., 2006, A&A, 453, 587Google Scholar
Maciel, W. J., Quireza, C., & Costa, R. D. D., 2007, A&A, 463, L13Google Scholar
Magrini, L., Corbelli, E., & Galli, D. 2007b, A&A, 470, 843Google Scholar
Magrini, L., Sestito, P., Randich, S., & Galli, D. 2009a, A&A, 494, 95Google Scholar
Magrini, L., Stanghellini, L., & Villaver, E. 2009b, ApJ, 696, 729CrossRefGoogle Scholar
Magrini, L., Vilchez, J. M., Mampaso, A., et al. , 2007a, A&A, 470, 865Google Scholar
Mollá, M., Díaz, A. I. 2005, MNRAS, 358, 521CrossRefGoogle Scholar
Pedicelli, S., Bono, G., Lemasle, B., et al. 2009, A&A, in press (astro-ph/0906.3140)Google Scholar
Perinotto, M. & Morbidelli, L. 2006, MNRAS, 372, 45CrossRefGoogle Scholar
Pilyugin, L. S., Ferrini, F., & Shkvarun, R. V. 2003, A&A, 401, 557Google Scholar
Pottasch, S., R. & Bernard-Salas, J. 2006, A&A, 457, 189Google Scholar
Quireza, C., Rood, R. T., Bania, T. M., Balser, D. S., & Maciel, W. J. 2006, ApJ, 653, 1226CrossRefGoogle Scholar
Romaniello, M., Primas, F., & Mottini, M. 2008, A&A, 488, 731Google Scholar
Rubin, R. H., Simpson, J. P., Colgan, S. W. J., et al. 2008, MNRAS, 387, 45CrossRefGoogle Scholar
Rudolph, A. L., Fich, M., Bell, G. R., et al. 2006, ApJS, 162, 346CrossRefGoogle Scholar
Sestito, P., Bragaglia, A., Randich, S., et al. 2008, A&A, 488, 943Google Scholar
Shaver, P. A., McGee, R. X., Newton, L. M., et al. 1983, MNRAS, 204, 53CrossRefGoogle Scholar
Stanghellini, L., Guerrero, M. A., Cunha, K., et al. 2006, ApJ, 651, 898CrossRefGoogle Scholar
Stanghellini, L., Shaw, R. A., & Villaver, E. 2008, ApJ, 689, 194CrossRefGoogle Scholar
Stasińska, G. 2004, In: Cosmochemistry. The melting pot of the elements. XIII Canary Islands Winter School of Astrophysics, Ed. Esteban, C., López, R. J. García, et al. , CUP, 115CrossRefGoogle Scholar