The Angular Power Spectra of Photometric SDSS LRGs
  We construct new galaxy angular power spectra based on the extended, updated
and final SDSS II Luminous Red Galaxy (LRG) photometric redshift survey: MegaZ
DR7. Encapsulating 7746 deg^{2} we utilise 723,556 photometrically determined
LRGs between 0.45 < z < 0.65 in a 3.3 (Gpc h^{-1})^3 spherical harmonic
analysis of the galaxy distribution. By combining four photometric redshift
bins we find preliminary parameter constraints of f_{b} = \Omega_{b}/\Omega_{m}
= 0.173 +/- 0.046 and \Omega_{m} = 0.260 +/- 0.035 assuming H_{0} = 75 km
s^{-1} Mpc^{-1}, n_{s}=1 and \Omega_{k} = 0. These limits are consistent with
the CMB and the previous data release (DR4). The C_{\ell} are sensitive to
redshift space distortions and therefore we also recast our constraints into a
measurement of \beta ~ \Omega_{m}^{0.55}/b in different redshift shells. The
robustness of these power spectra with respect to a number of potential
systematics such as extinction, photometric redshift and ANNz training set
extrapolation are examined. The latter includes a cosmological comparison of
available photometric redshift estimation codes where we find excellent
agreement between template and empirical estimation methods. MegaZ DR7
represents a methodological prototype to next generation surveys such as the
Dark Energy Survey (DES) and, furthermore, is a photometric precursor to the
spectroscopic BOSS survey. Our galaxy catalogue and all power spectra data can
be found at http://zuserver2.star.ucl.ac.uk/~sat/MegaZ/MegaZDR7.tar.gz.
