The K-band luminosity function of nearby field galaxies

Loveday, Jon (2000) The K-band luminosity function of nearby field galaxies. Monthly Notices of the Royal Astronomical Society, 312 (3). 557 -566. ISSN 0035-8711

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We present a measurement of the K-band luminosity function (LF) of field galaxies obtained from near-infrared imaging of a sample of 345 galaxies selected from the Stromlo-APM Redshift Survey. The LF is well-fitted over the ten magnitude range -26 < M_K < -16 by a Schechter function with parameters alpha = -1.16 +- 0.19, M* = -23.58 +- 0.42, phi* = 0.012 +- 0.008 Mpc^-3 assuming a Hubble constant of H_0 = 100 km/s/Mpc. We have also estimated the LF for two subsets of galaxies subdivided by the equivalent width of the Halpha emission line at EW(Halpha) = 10A. There is no significant difference in LF shape between the two samples, although there is a hint (~1 sigma significance) that emission line galaxies (ELGs) have M* roughly one magnitude fainter than non-ELGs. Contrary to the optical LF, there is no difference in faint-end slope alpha between the two samples

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Jonathan Loveday
Date Deposited: 06 Feb 2012 18:40
Last Modified: 13 Mar 2017 23:42

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