HST-NICMOS Observations of Galactic Bulges: Red Nuclei in Nearby Galaxies

Bibcode
1998ESOC...55..162P
Peletier, R. F.; Balcells, M.
Bibliographical reference

NICMOS and the VLT: A New Era of High Resolution Near Infrared Imaging and Spectroscopy, Pula, Sardinia, Italy, June 26-27th 1998 ESO Conference and Workshop Proceedings 55, 1998, Wolfram Freudling and Richard Hook eds.,p.162

Advertised on:
7
1998
Number of authors
2
IAC number of authors
0
Citations
0
Refereed citations
0
Description
We describe multi-color observations with NICMOS and WFPC2 of 20 nuclei of nearby galactic bulges of types S0-Sbc. We find that the centers of 19 out of 20 bulges are found to be dusty, with average extinction A_V between 0.6 and 0.9 mag. Our second result is that the stellar populations of galactic bulges of type S0-Sb show a very tight B-I vs. I-H relation, suggesting that the age spread among bulges of early-type spirals is small (at most about 2-3 Gyr).
Type
Non-refereed

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