NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-23 T19:28:28 PDT
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For refcode 1991A&A...245...31L:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1991A&A...245...31L NGC 3597: formation of an elliptical via merging? D. Lutz Max-Planck-Institut fur Astronomie, Konigstuhl 17, W-6900 Heidelberg, Federal Republic of Germany Received October 16;accepted November 27, 1990 Abstract. Optical and near-infrared observations of the merging galaxy NGC 3597 are presented. The merger has already developed into an elliptical- like object with a de Vaucouleurs brightness distribution, but intense star formation is continuing in the central 4 kpc. The central region still contains ~6.8x10^8^M_sun_ of gas in this advanced state of merging. Star forming regions in the central few kpc may enhance the central phase space density of stars in this merger. NGC 3597 contains a number of luminous blue stellar clusters. Their luminosities and colours are in the range expected for young globular clusters. Although the upper limit of about 100 pc for their size is sufficient to distinguish unambiguously between compact, globular-like objects and more diffuse associations, this observation may indicate that the specific globular cluster frequency is not conserved during merging. ALtogether, the observations suggest that NGC 3597 will develop into an elliptical galaxy of moderate luminosity. Key words: galaxies:individual:NGC 3597-galaxies:evolution of galaxies:structure of-clusters:globular
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