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Proceedings Paper

The stellar content of nuclear star clusters in spiral galaxies
Author(s): Torsten Boeker; Roeland P. van der Marel; Joris Gerssen; Jakob Walcher; Hans-Walter Rix; Joseph C. Shields; Luis C. Ho
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Paper Abstract

We discuss first results from a spectroscopic survey of nuclear star clusters in nearby, late-type spiral galaxies. The data, obtained with the Space Telescope Imaging Spectrograph (STIS), allow us to derive cluster ages via stellar population synthesis methods. We present some typical data sets, describe the fitting algorithm, and discuss the results for the 6 objects studied so far. We find that only one nuclear cluster spectrum is dominated by a population older than 1 Gyr. In all cases, the fit is significantly improved by allowing for multiple generations of stars. Although preliminary, these results support the notion that nuclear cluster formation is most likely a repetitive process.

Paper Details

Date Published: 13 February 2003
PDF: 9 pages
Proc. SPIE 4834, Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II, (13 February 2003); doi: 10.1117/12.456699
Show Author Affiliations
Torsten Boeker, Space Telescope Science Institute (United States)
Roeland P. van der Marel, Space Telescope Science Institute (United States)
Joris Gerssen, Space Telescope Science Institute (United States)
Jakob Walcher, Max-Planck-Institut fuer Astronomie (United States)
Hans-Walter Rix, Max-Planck-Institut fuer Astronomie (United States)
Joseph C. Shields, Ohio Univ. (United States)
Luis C. Ho, Carnegie Observatories (United States)


Published in SPIE Proceedings Vol. 4834:
Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II
Puragra Guhathakurta, Editor(s)

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