TY - JOUR
T1 - Galaxy and Mass assembly (GAMA): Maximum-likelihood determination of the luminosity function and its evolution
AU - Loveday, J.
AU - Norberg, P.
AU - Baldry, I.K.
AU - Bland-Hawthorn, J.
AU - Brough, S.
AU - Brown, M.J.I.
AU - Driver, Simon
AU - Kelvin, L.S.
AU - Phillipps, S.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. We describe modifications to the joint stepwise maximum-likelihood method of Cole in order to simultaneously fit the Galaxy and Mass Assembly II galaxy luminosity function (LF), corrected for radial density variations, and its evolution with redshift. The whole sample is reasonably well fitted with luminosity (Qe) and density (Pe) evolution parameters Qe, Pe ≈1.0, 1.0 but with significant degeneracies characterized by Qe ≈ 1.4 - 0.4Pe. Blue galaxies exhibit larger luminosity density evolution than red galaxies, as expected. We present the evolutioncorrected r-band LF for the whole sample and for blue and red subsamples, using both Petrosian and Sérsic magnitudes. Petrosian magnitudes miss a substantial fraction of the flux of de Vaucouleurs profile galaxies: the Sérsic LF is substantially higher than the Petrosian LF at the bright end.
AB - © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. We describe modifications to the joint stepwise maximum-likelihood method of Cole in order to simultaneously fit the Galaxy and Mass Assembly II galaxy luminosity function (LF), corrected for radial density variations, and its evolution with redshift. The whole sample is reasonably well fitted with luminosity (Qe) and density (Pe) evolution parameters Qe, Pe ≈1.0, 1.0 but with significant degeneracies characterized by Qe ≈ 1.4 - 0.4Pe. Blue galaxies exhibit larger luminosity density evolution than red galaxies, as expected. We present the evolutioncorrected r-band LF for the whole sample and for blue and red subsamples, using both Petrosian and Sérsic magnitudes. Petrosian magnitudes miss a substantial fraction of the flux of de Vaucouleurs profile galaxies: the Sérsic LF is substantially higher than the Petrosian LF at the bright end.
U2 - 10.1093/mnras/stv1013
DO - 10.1093/mnras/stv1013
M3 - Article
SN - 0035-8711
VL - 451
SP - 1540
EP - 1552
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 2
ER -