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Kinematics and stellar populations of the double-barred early-type galaxy NGC357

Published online by Cambridge University Press:  01 July 2007

Adriana de Lorenzo-Cáceres ,
Alexandre Vazdekis  and
J. Alfonso L. Aguerri
Adriana de Lorenzo-Cáceres
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38200 La Laguna, Tenerife, Spain email: adlcr@iac.es
Alexandre Vazdekis
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38200 La Laguna, Tenerife, Spain email: adlcr@iac.es
J. Alfonso L. Aguerri
Affiliation:
Instituto de Astrofísica de Canarias, C/ Vía Láctea s/n, 38200 La Laguna, Tenerife, Spain email: adlcr@iac.es
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Abstract

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We have carried out a kinematical and stellar population analysis of the double-barred galaxy NGC357 to provide a more complete characterization of these systems and their role in the formation of galaxy bulges. We clearly identify the presence of the inner bar in the radial velocity and velocity dispersion profiles. The age, metallicity and [Mg/Fe] abundance ratio estimates are very similar to those of ellipticals of equivalent central σ. The [Mg/Fe] value for the bulge of this galaxy suggests formation timescales shorter than 1Gyr.

Keywords

galaxies: bulgesgalaxies: evolutiongalaxies: formationgalaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 137 - 138
Copyright
Copyright © International Astronomical Union 2008

References

Kuntschner, H., Smith, R. J., Colless, M., Davies, R. L., Kaldare, R., & Vazdekis, A. 2002, MNRAS, 337, 172CrossRefGoogle Scholar
Shlosman, I., Begelman, M. C., & Frank, J. 1990, Nature, 345, 679CrossRefGoogle Scholar
Vazdekis, A. 1999, ApJ 513, 224CrossRefGoogle Scholar
Vazdekis, A. & Arimoto, N. 1999, ApJ 525, 144CrossRefGoogle Scholar
Yamada, Y., Arimoto, N., Vazdekis, A., & Peletier, R. F. 2006, ApJ, 637, 200CrossRefGoogle Scholar