Stellar Populations of Bulges in Galaxies with Low Surface-brightness Discs

Bibcode
2012Msngr.149...28M
Morelli, L.; Corsini, E. M.; Pizzella, A.; Dalla Bontà, E.; Coccato, L.; Méndez-Abreu, J.; Cesetti, M.
Bibliographical reference

The Messenger, vol. 149, p. 28-32

Advertised on:
9
2012
Number of authors
7
IAC number of authors
2
Citations
0
Refereed citations
0
Description
The radial profiles of the age, metallicity and α/Fe enhancement of the stellar populations in the bulge-dominated region for a sample of eight spiral galaxies with low surface-brightness stellar discs and bulges are presented. Almost all the sample bulges are characterised by young stellar populations, solar α/Fe enhancements and metallicities spanning from high to sub-solar values. No significant gradient in age and α/Fe enhancement is measured, whereas a negative metallicity gradient is found in a few cases. The stellar populations of the bulges hosted by low surface-brightness discs share many properties with those of high surface-brightness galaxies and are therefore likely to have common formation scenarios and evolution histories.
Type
Non-refereed

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