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The formation of galactic bulges

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conference contribution
posted on 2024-07-11, 12:12 authored by Reynier Peletier, Marc Balcells, Jesus Falcón-Barroso, Alister GrahamAlister Graham
We summarise some recent results about nearby galactic bulges, relevant to their formation. We highlight a number of significant advances in our understanding of the surface brightness profiles, stellar populations, and especially the very centers of spirals. We also view our own Milky Way as if it were an external galaxy. Our main conclusions are that bulges of early-type spirals (Sb or earlier) contain central point sources, just like late-type spirals and most other types of galaxies. Central point source luminosities correlate best with total bulge luminosity, and not as well with morphological type. Bulges of early-type spiral galaxies follow the fundamental plane and the colour/line strength vs. luminosity relations of elliptical galaxies. Although we have a reasonable idea about bulges of early-type spirals we know much less about late-type bulges. However, the close resemblance of our Milky Way Bulge to early-type external bulges makes us suspect that maybe bulges of late-type spirals might be very similar as well.

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ISSN

1824-8039

Journal title

Proceedings of Science

Conference name

Science

Volume

2004-October

Publisher

SISSA

Copyright statement

Copyright © 2004 The authors. Published in Proceedings of Science under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence (https://creativecommons.org/licenses/by-nc-sa/3.0/). The published version is reproduced in accordance with this policy.

Language

eng

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