the full SDSS-DR6 edge-on sample, bright galaxies, faint galaxies, red galaxies, and blue galaxies (the latter two consisting mainly of ellipticals and spirals respectively). Using the 2-halo term of the projected correlation function, we find an excess of structure in the direction of the major semi-axis for all samples; the red sample shows the highest alignment ($2.7\pm0.8\%$) and indicates that the angular momentum of flattened spheroidals tends to be perpendicular to the large-scale structure. These results are in qualitative agreement with the numerical simulation results indicating that the angular momentum of galaxies could be built up as in the Tidal Torque scenario. The 1-halo term only shows a significant alignment for blue spirals ($1.0\pm0.4\%$), consistent with the 1-halo results from the simulation but with a lower amplitude. This could indicate that even though the structure traced by galaxies is adequate to study large-scale structure alignments, this would not be the case for the inner structure of low mass haloes, $M\leq 10^{13}h^{-1}M_{\odot}$, an effect apparently more important around red $g-r>0.7$ galaxies.
author:
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    Dante J. Paz$^1$, Federico Stasyszyn$^{1,2}$, Nelson D. Padilla $^{3}$\
    $^1$ Instituto de Astronomía Teórica y Experimental IATE (UNC-CONICET),\
    Observatorio Astronómico Córdoba, Francisco N. Laprida 922, Córdoba, Argentina.\
    