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Galactic Bulges from HST-NICMOS Observations: Ages and Dust

Abstract:

We present optical and near-infrared colour maps of the central regions of bulges of S0 and spiral galaxies obtained with WFPC2 and NICMOS on the HST. By combined use of HST and ground-based data the colour information spans from a few tens of pc to a few kpc. In almost all galaxies the colour profiles in the central 100-200 pc become more rapidly redder. We attribute the high central colour indices to a central concentration of dust. We infer an average extinction at the center of A_V = 0.6 ...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
Role:
Author
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Journal:
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume:
310
Issue:
3
Pages:
703-716
Publication date:
1999-12-11
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
URN:
uuid:25eb264b-7e48-42e6-a518-20e982260e13
Source identifiers:
3568
Local pid:
pubs:3568
Keywords:

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