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The Outer Halo Cluster System of NGC 1399

Published online by Cambridge University Press:  03 August 2017

B. Dirsch ,
D. Geisler ,
T. Richtler  and
J.C. Forte
B. Dirsch
Affiliation:
Universidad de Concepción, Chile
D. Geisler
Affiliation:
Universidad de Concepción, Chile
T. Richtler
Affiliation:
Universidad de Concepción, Chile
J.C. Forte
Affiliation:
Universidad Nacional de La Plata, Argentina

Abstract

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We investigate the outer halo globular cluster population of NGC 1399. This study uses wide-field imaging of this cluster system, which covers the largest area studied with CCD photometry until now. The cluster system of NGC 1399 is found to extend further than 100 kpc from the galaxy. A population of metal-rich, as well as metal-poor clusters has been identified at these large radii. At radii smaller than 55 kpc the specific frequency of the red cluster system remains constant, while that of the blue clusters increases proportional to r0.8±0.2. For larger radii, the uncertainty of the galaxy light profile does not permit any reliable statement.

Type
Part 2. Globular Cluster Systems of Distant Galaxies
Information
Symposium - International Astronomical Union , Volume 207: Extragalactic Star Clusters , 2002 , pp. 324 - 326
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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