Home List of Titles The Hawaii plus Anglo-Australian Observatory K-band galaxy redshift survey I: the local K-band luminosity function
Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/42706
- The Hawaii plus Anglo-Australian Observatory K-band galaxy redshift survey I: the local K-band luminosity function
- Huang, Jiasheng Sheng; Glazebrook, Karl; Cowie, Lennox L.; Tinney, C.
- 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
- Astrophysical Journal, Vol. 584, no. 1 (Feb 2003), pp. 203-209
- Publication year
- Classification; Cosmology; Counts; Density; Evolution; Field; Function; Galaxies; Luminosity; Mass function infrared; Observations; Sample; Surveys
- University of Chicago Press
- Publisher URL
- Copyright © 2003 RAS.
- Peer reviewed