K-band Luminosity Function of Field Galaxies (Loveday 2000)

Details K-band Luminosity Function of Field Galaxies (Loveday 2000) K-band Luminosity Function of Field Galaxies (Loveday 2000)

Jul 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ycat..73120557l&link_type=abstract

VizieR On-line Data Catalog: J/MNRAS/312/557. Originally published in: 2000MNRAS.312..557L

Physics

Galaxies: Ir, Photometry: Infrared, Surveys, Redshifts

Scientific paper

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 reasonably well fitted over the 10-mag range -26 < M(K-band) < -16 by a Schechter function with the parameters α=-1.16+/-0.19, M*=-23.58+/-0.42 and {phi*}=0.012+/-0.008 Mpc-3, assuming a Hubble constant of 100 km.s-1.Mpc-1. We have also estimated the LF for two subsets of galaxies subdivided by the equivalent width of the Hα emission line at EW(Hα)=1nm. There is no significant difference in LF shape between the two samples, although there is a hint (~1σ significance) that emission-line galaxies (ELGs) have M* roughly 1 mag fainter than non-ELGs. Contrary to the optical LF, there is no difference in the faint end slope α between the two samples. (1 data file).

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