Astron. Astrophys. 354, 836–846 (2000) ASTRONOMY AND ASTROPHYSICS Young massive star clusters in nearby spiral galaxies? III. Correlations between cluster populations and host galaxy properties S.S. Larsen1,2 and T. Richtler3,4 1 Copenhagen University Astronomical Observatory, Juliane Maries Vej 32, 2100 Copenhagen Ø, Denmark 2 UCO/Lick Observatory, Kerr Hall, UC Santa Cruz, CA 95064, USA (
[email protected]) 3 Sternwarte der Universitat¨ Bonn, Auf dem Hugel¨ 71, 53121 Bonn, Germany 4 Grupo de Astronom´ıa, Departamento de F´ısica, Casilla 160-C, Universidad de Concepcion,´ Concepcion,´ Chile (
[email protected]) Received 16 August 1999 / Accepted 22 December 1999 Abstract. We present an analysis of correlations between in- the Magellanic Clouds. It was noted early on that the Clouds, in tegrated properties of galaxies and their populations of young particular the LMC, contain a number of very massive, young massive star clusters. Data for 21 nearby galaxies presented by clusters that do not have any counterparts in our own galaxy Larsen & Richtler (1999) are used together with literature data (van den Bergh 1991; Richtler 1993). Many recent studies have for 10 additional galaxies, spanning a range in specific U-band shown the presence of such “Young Massive Clusters” (YMCs) cluster luminosity TL(U) from 0 to 15. We find that TL(U) also in a number of mergers and starburst galaxies (see e.g. list in correlates with several observable host galaxy parameters, in Harris 1999) and it is clear that the occurrence of such objects particular the ratio of Far-Infrared (FIR) to B-band flux and the is often associated with violent star formation, leading to the surface brightness.