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Paper: The Morphological Type Dependence of K-band Luminosity Functions
Volume: 419, Galaxy Evolution: Emerging Insights and Future Challenges
Page: 171
Authors: Devereux, N.; Hriljac, P.; Willner, S. P.; Ashby, M. L. N.; Willmer, C. N. A.
Abstract: Differential 2.2 μm (K-band) luminosity functions are presented for a complete sample of 1570 nearby (Vgsr ≤ 3000 km s-1, where Vgsr is the velocity measured with respect to the Galactic Standard of Rest), bright (K ≤ 10 mag), galaxies segregated by visible morphology. The K-band luminosity function for late-type spirals follows a power law that rises towards low luminosities whereas the K-band luminosity functions for ellipticals, lenticulars and bulge-dominated spirals are peaked with a fall off at both high and low luminosities. However, each morphological type (E, S0, S0/a-Sab, Sb-Sbc, Sc-Scd) contributes approximately equally to the overall K-band luminosity density in the local universe, and by inference, the stellar mass density as well.
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