The Hawaii-AAO K - band galaxy redshift survey. 1. The Local K - band luminosity function
Sep, 2002
7 pages
Published in:
- Astrophys.J. 584 (2003) 203-209
e-Print:
- astro-ph/0209440 [astro-ph]
DOI:
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Abstract: (arXiv)
We present the K-band local luminosity function derived froma sample of 1056 bright (K<15) K-selected galaxies from the Hawaii-AAO K-band redshift survey. The Hawaii-AAO K-band redshift survey covers 4 equatorial fields with a total area of 8.22 . We derive both the non-parametric and Schechter luminosity function from our data, and determine , and \phi^*=0.013\pm0.003 h^3 \Mpc^{-3} for a universe with and . 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 and a steep slope, while early-type galaxies have a much brighter and a quite flat slope in their K-band luminosity functions. This is consistent with what have 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 SDSS 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-IR luminosity densities.References(0)
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