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48 - Formation and evolution of the Galactic bulge: constraints from stellar abundances

Published online by Cambridge University Press:  02 December 2009

S. K. Ballero
Affiliation:
Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy
F. Matteucci
Affiliation:
Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy
L. Origlia
Affiliation:
INAF – Osservatorio Astronomico di Bologna, Via G. Ranzani 1, I-40127 Bologna, Italy
Garik Israelian
Affiliation:
Instituto de Astrofísica de Canarias, Tenerife
Georges Meynet
Affiliation:
Geneva Observatory
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Summary

We present results for the chemical evolution of the Galactic bulge in the context of an inside-out formation model of the Galaxy. A supernovadriven wind was also included in analogy with elliptical galaxies. New observations of chemical-abundance ratios and the metallicity distribution have been employed in order to check the model results. We confirm previous findings that the bulge formed on a very short timescale with quite a high star-formation efficiency and an initial mass function more skewed towards high masses than the one suitable for the Solar neighbourhood. A certain amount of primary nitrogen from massive stars might be required in order to reproduce the nitrogen data at low and intermediate metallicities.

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Publisher: Cambridge University Press
Print publication year: 2008

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  • Formation and evolution of the Galactic bulge: constraints from stellar abundances
    • By S. K. Ballero, Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy, F. Matteucci, Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy, L. Origlia, INAF – Osservatorio Astronomico di Bologna, Via G. Ranzani 1, I-40127 Bologna, Italy
  • Edited by Garik Israelian, Instituto de Astrofísica de Canarias, Tenerife, Georges Meynet
  • Book: The Metal-Rich Universe
  • Online publication: 02 December 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536267.049
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  • Formation and evolution of the Galactic bulge: constraints from stellar abundances
    • By S. K. Ballero, Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy, F. Matteucci, Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy, L. Origlia, INAF – Osservatorio Astronomico di Bologna, Via G. Ranzani 1, I-40127 Bologna, Italy
  • Edited by Garik Israelian, Instituto de Astrofísica de Canarias, Tenerife, Georges Meynet
  • Book: The Metal-Rich Universe
  • Online publication: 02 December 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536267.049
Available formats
×

Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Formation and evolution of the Galactic bulge: constraints from stellar abundances
    • By S. K. Ballero, Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy, F. Matteucci, Dipartimento di Astronomia, Università di Trieste, Via G. B. Tiepolo 11, I-34124 Trieste, Italy; INAF – Osservatorio Astronomico di Trieste, Via G. B. Tiepolo 11, I-34121 Trieste, Italy, L. Origlia, INAF – Osservatorio Astronomico di Bologna, Via G. Ranzani 1, I-40127 Bologna, Italy
  • Edited by Garik Israelian, Instituto de Astrofísica de Canarias, Tenerife, Georges Meynet
  • Book: The Metal-Rich Universe
  • Online publication: 02 December 2009
  • Chapter DOI: https://doi.org/10.1017/CBO9780511536267.049
Available formats
×