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Observations across nearby spiral bulges

Published online by Cambridge University Press:  01 July 2007

A. E. Sansom ,
S. I. Loubser ,
P. Sánchez-Blázquez  and
I. K. Söchting
A. E. Sansom
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston, Lancs, UK email: [email protected]
S. I. Loubser
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston, Lancs, UK email: [email protected]
P. Sánchez-Blázquez
Affiliation:
Centre for Astrophysics, University of Central Lancashire, Preston, Lancs, UK email: [email protected]
I. K. Söchting
Affiliation:
Astrophysics, Oxford University, Denys Wilkinson Building, Keeble Road, Oxford, UK email: [email protected]
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Abstract

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The bulges of spiral galaxies may be old, as in our Galaxy, or may possess younger stars, as evidenced in spectroscopic line strengths in some external bulges. Bulges look similar to elliptical galaxies, but their formation history is expected to differ due to the presence of the disc and different formation mechanisms. This project extends the numbers of high signal-to-noise, broad coverage spectra to a larger sample of bulges in order to test conflicting ideas about their age distributions. New Gemini long-slit observations will be used to derive stellar population ages and histories across 30 bulges. Here we present preliminary results from the sample.

Keywords

galaxies: bulgesgalaxies: formationgalaxies: stellar content
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 141 - 142
Copyright
Copyright © International Astronomical Union 2008

References

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