Using 3.6 and 4.5 μm images of 73 late-type, edge-on galaxies from the S4G survey, we compare the richness of the globular cluster populations of these galaxies to those of early-type galaxies that we measured previously. In general, the galaxies presented here fill in the distribution for galaxies with lower stellar mass, M∗, specifically log(M∗/M⊙, overlap the results for early-type galaxies of similar masses, and, by doing so, strengthen the case for a dependence of the number of globular clusters per 109M⊙ of galaxy stellar mass, TN, on M∗. For 8.5 < log(M∗/M⊙ < 10.5 we find the relationship can be satisfactorily described as TN=(M∗/106.7)-0.56 when M∗ is expressed in solar masses. The functional form of the relationship is only weakly constrained, and extrapolation outside this range is not advised. Our late-type galaxies, in contrast to our early types, do not show the tendency for low-mass galaxies to split into two TN families. Using these results and a galaxy stellar mass function from the literature, we calculate that, in a volume-limited, local universe sample, clusters are most likely to be found around fairly massive galaxies (M∗ ∼ 1010.8M⊙) and present a fitting function for the volume number density of clusters as a function of parent-galaxy stellar mass. We find no correlation between TN and large-scale environment, but we do find a tendency for galaxies of fixed M∗ to have larger TN if they have converted a larger proportion of their baryons into stars.
- galaxies: evolution
- galaxies: star clusters: general
- galaxies: stellar content
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science
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Zaritsky, D. F. (Creator), McCabe, K. (Creator), Aravena, M. (Creator), Athanassoula, E. (Creator), Bosma, A. (Creator), Comerón, S. (Contributor), Courtois, H. M. (Creator), Elmegreen, B. G. (Creator), Elmegreen, D. M. (Creator), Erroz-Ferrer, S. (Creator), Gadotti, D. A. (Creator), Hinz, J. L. (Creator), Ho, L. C. (Creator), Holwerda, B. (Creator), Kim, T. (Creator), Knapen, J. H. (Creator), Laine, J. (Creator), Laurikainen, E. (Creator), Muñoz-Mateos, J. C. (Contributor), Salo, H. (Creator), Sheth, K. (Creator) & Courtois, H. M. (Creator), Centre de Donnees Strasbourg (CDS), 2016