Kavli Affiliate: Xuebing Wu
| Summary:
We present optical luminosity functions (LFs) of galaxies in the $^0.1g$, $^0.1r$, and $^0.1i$ bands, calculated using data in $sim 40$ $deg^2$ sky area of LAMOST Complete Spectroscopic Survey of Pointing Area (LaCoSSPAr) in Southern Galactic Cap. Redshifts for galaxies brighter $r = 18.1$ were obtained mainly with LAMOST. In each band, LFs derived using both parametric and non-parametric maximum likelihood methods agree well with each other. In the $^0.1r$ band, our fitting parameters of the Schechter function are $φ_*=(1.65pm0.36)times10^-2h^3Mpc^-3$, $M_*=-20.69pm0.06$ mag, and $α=-1.12pm0.08$, in agreements with previous studies. Separate LFs are also derived for emission line galaxies and absorption line galaxies, respectively. The LFs of absorption line galaxies show a dip at $^0.1r sim 18.5$ and can be well fitted by a double-Gaussian function, suggesting a bi-modality in passive galaxies.
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