The Globular Cluster System of NGC 1399. III. VLT Spectroscopy and Database*

B. Dirsch; T. Richtler; D. Geisler; K. Gebhardt; M. Hilker; M. V. Alonso; J. C. Forte; E. K. Grebel; L. Infante; S. Larsen; D. Minniti; M. Rejkuba

doi:10.1086/380607

The Globular Cluster System of NGC 1399. III. VLT Spectroscopy and Database^*

B. Dirsch¹, T. Richtler¹, D. Geisler¹, K. Gebhardt², M. Hilker³, M. V. Alonso⁴, J. C. Forte⁵, E. K. Grebel⁶, L. Infante⁷, S. Larsen⁸, D. Minniti⁷, and M. Rejkuba⁸

© 2004. The American Astronomical Society. All rights reserved. Printed in U.S.A.
The Astronomical Journal, Volume 127, Number 4 Citation B. Dirsch et al 2004 AJ 127 2114 DOI 10.1086/380607

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Author affiliations

¹ Departamento de Física, Universidad de Concepción, Casilla 160-C, Concepción, Chile

² Department of Astronomy, University of Texas at Austin, Austin, TX 78712

³ Sternwarte der Universität Bonn, Auf dem Hügel 71, D-53121 Bonn, Germany

⁴ Observatorio Astronómico de Córdoba, Laprida 854, Córdoba, 5000, CONICET, Argentina CNRS UMR 5572; Observatoire Midi-Pyrénées, 14 Avenue Edouard Belin, F-31400 Toulouse, France

⁵ Facultad Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, 1900-La Plata, UNLP and CONICET, Argentina

⁶ Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117, Heidelberg, Germany

⁷ Departamento de Astronomía y Astrofísica, Pontificia Universidad Católica, Vicuña Mackenna 4860 Santiago 22, Chile

⁸ European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany

Dates

Received 2003 January 31
Accepted 2003 October 7

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Abstract

Radial velocities of 468 globular clusters around NGC 1399, the central galaxy in the Fornax cluster, have been obtained with FORS2 and the Mask Exchange Unit (MXU) at the ESO Very Large Telescope. This is the largest sample of globular cluster velocities around any galaxy obtained so far. The mean velocity uncertainty is 50 km s^-1. This data sample is accurate and large enough to be used in studies of the mass distribution of NGC 1399 and the properties of its globular cluster system. Here we describe the observations and the reduction procedure, and we discuss the uncertainties of the resulting velocities. The complete sample of cluster velocities that is used in a dynamical study of NGC 1399 is tabulated. A subsample is compared with previously published values.

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Footnotes

*
Based on observations collected at the European Southern Observatory, Cerro Paranal, Chile; ESO program 66.B-0393.

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