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The Globular Cluster Specific Frequency in NGC 1399 and 4486: A Comparative Study

Published online by Cambridge University Press:  03 August 2017

Juan C. Forte ,
Doug Geisler ,
E. Kim ,
Myung Gyoon Lee  and
Pablo Ostrov
Juan C. Forte
Affiliation:
Fac. Cs. Astronómicas y Geofísicas, Univ. Nac. de La Plata, Paseo del Bosque, La Plata 1900, and CONICET, Argentina
Doug Geisler
Affiliation:
Grupo de Astronomía, Dpto. de Física, Univ. de Concepción, Casilla 160-C, Concepción, Chile
E. Kim
Affiliation:
Astronomy Program, Seoul National Unversity, Shinlim-dong, Gwanag-gu, Seoul 151-542, South Korea
Myung Gyoon Lee
Affiliation:
Astronomy Program, Seoul National Unversity, Shinlim-dong, Gwanag-gu, Seoul 151-542, South Korea
Pablo Ostrov
Affiliation:
Fac. Cs. Astronómicas y Geofísicas, Univ. Nac. de La Plata, Paseo del Bosque, La Plata 1900, Argentina

Abstract

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A two color CCD survey for globular clusters in the galactocentric range from 2 to 7 arcmin from the galaxy centers is presented for NGC 1399 and NGC 4486 (M87), two systems that, for a long time, have been considered as class archetypes of the so called “high specific frequency phenomenon”. The new results, combined with previously published HST data for the inner 2 arcmin, and with a re-discussion of the surface brightness profiles, allow a new estimate of the globular cluster specific frequencies. The resulting S N values cannot be considered as anomalously large and, rather, they are consistent with values obtained for other galaxies with similar morphologies.

Information

Type
Part 2. Globular Cluster Systems of Distant Galaxies
Information
Symposium - International Astronomical Union , Volume 207: Extragalactic Star Clusters , 2002 , pp. 251 - 255
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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