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dc.contributor.authorDevereux, Nick
dc.contributor.authorWillner, S. P.
dc.contributor.authorAshby, M. L. N.
dc.contributor.authorWillmer, C. N. A.
dc.contributor.authorHriljac, Paul
dc.date.accessioned2018-09-20T16:05:56Z
dc.date.available2018-09-20T16:05:56Z
dc.date.issued2009-08-18
dc.identifier.citationDevereux, Nick; Willner, S. P. Ashby, M. L. N.; Willmer, C. N. A.; Hriljac, Paul (2009). Nearby galaxies in the 2 μm all sky survey. i.k-band luminosity functions. The Astrophysical Journal 702 (2), 955-969
dc.identifier.issn0004-637X,1538-4357
dc.identifier.urihttp://hdl.handle.net/10379/11173
dc.description.abstractDifferential K-s-band luminosity functions (LFs) are presented for a complete sample of 1613 nearby bright galaxies segregated by visible morphology. The LF for late-type spirals follows a power law that rises toward low luminosities whereas the LFs for ellipticals, lenticulars, and bulge-dominated spirals are peaked and decline toward both higher and lower luminosities. Each morphological type (E, S0, S0/a-Sab, Sb-Sbc, Sc-Scd) contributes approximately equally to the overall K-s-band luminosity density of galaxies in the local universe. Type averaged bulge/disk ratios are used to subtract the disk component leading to the prediction that the K-s-band LF for bulges is bimodal with ellipticals dominating the high luminosity peak, comprising 60% of the bulge luminosity density in the local universe with the remaining 40% contributed by lenticulars and the bulges of spirals. Overall, bulges contribute 30% of the galaxy luminosity density at K-s in the local universe with spiral disks making up the remainder. If bulge luminosities indicate central black hole (BH) masses, then our results predict that the BH mass function is also bimodal.
dc.publisherIOP Publishing
dc.relation.ispartofThe Astrophysical Journal
dc.subjectgalaxies: bulges
dc.subjectgalaxies: elliptical and lenticular, cd
dc.subjectgalaxies: formation
dc.subjectgalaxies: luminosity function, mass function
dc.subjectgalaxies: spiral
dc.subjectinfrared: galaxies
dc.subjectsupermassive black-holes
dc.subjectactive galactic nuclei
dc.subjectredshift survey
dc.subjectelliptic galaxies
dc.subjectcosmological framework
dc.subjectcluster galaxies
dc.subjectspace density
dc.subjectmass function
dc.subjectred galaxies
dc.subjectevolution
dc.titleNearby galaxies in the 2 μm all sky survey. i.k-band luminosity functions
dc.typeArticle
dc.identifier.doi10.1088/0004-637x/702/2/955
dc.local.publishedsourcehttp://iopscience.iop.org/article/10.1088/0004-637X/702/2/955/pdf
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