Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/42706

Title

The Hawaii plus Anglo-Australian Observatory K-band galaxy redshift survey I: the local K-band luminosity function

Author(s)

Huang, Jiasheng Sheng;  Glazebrook, Karl;  Cowie, Lennox L.;  Tinney, C.

Abstract

We present the K-band local luminosity function derived from a sample of 1056 bright (K < 15) K-selected galaxies from the Hawaii+Anglo-Australian Observatory (AAO) K-band redshift survey. The Hawaii+ AAO K-band redshift survey covers four equatorial fields with a total area of 8.22 deg2. We derive both the nonparametric and Schechter luminosity function from our data and determine M*(K) = -23.70 ± 0.08 + 5log10(A), α = -1.37 ± 0.10, and φ* = 0.013 ± 0.003 h 3 Mpc-3 for a universe with Ωm = 0.3 and ΩΛ = 0.7. We also measure the K-band luminosity function for the early- and later type galaxies from our morphologically classified subsample. It appears that later type galaxies have a fainter M* and a steep slope, while early-type galaxies have a much brighter M* and a quite flat slope in their K-band luminosity functions. This is consistent with what has been found in optical-type dependent luminosity function. The K-band luminosity density derived using our luminosity function is now measured at a similar redshift depth to optical luminosity densities in the Sloan Digital Sky Survey redshift survey. It is 2 times higher than the previous measurement from the shallower 2MASS sample and resolves the previously reported discrepancies between optical and near-infrared luminosity densities.

Publication type

Journal article

Source

Astrophysical Journal, Vol. 584, no. 1 (Feb 2003), pp. 203-209

Publication year

2003

Keyword(s)

Classification;  Cosmology;  Counts;  Density;  Evolution;  Field;  Function;  Galaxies;  Luminosity;  Mass function infrared;  Observations;  Sample;  Surveys

Publisher

University of Chicago Press

ISSN

0004-637X

Publisher URL

http://dx.doi.org/10.1086/345619

Copyright

Copyright © 2003 RAS.

Peer reviewed