Left panel: the 3D view of the Lynx-Cancer void region with positions of `luminous' galaxies (M_B < -19.0 mag). The supergalactic coordinate grid (SGX, SGY, SGZ) is in units of km\s. Large filled green dots show positions of pairs and groups in which at least one `luminous' galaxy enters. Large black filled dots show positions of `isolated' luminous galaxies. Each luminous galaxy is joined with the three the nearest luminous neighbours to help visually define the void border. Dwarf galaxies inside the void are shown by small red squares. Right panel: The same figure with a contour sketch of the larger main void (large sphere) and the subvoid (smaller sphere), which includes a large fraction of void galaxies.

The finding charts of 64 galaxies from the Lynx-Cancer void sample, falling in the zone covered by the SDSS. They are prepared with the SDSS DR7 Navigate Tool with inverted colours and are shown in the order of their RA. The side of most square frames measures ~100", with except of several larger galaxies. For J0729+2754, J0801+5044, J0813+4559 the side is ~200", while for J0813+4544, J0814+4903, J0819+5000 the side is ~300".

The distribution of distances to the nearest luminous galaxy D_NN for the void galaxy sample.

The distribution of absolute blue magnitudes M_B for the void galaxies.

The shape of the raw $B$-band luminosity function for the Lynx-Cancer void galaxies, fitted by the Schechter functions on the M_B range [-14.0,-18.0]. Red dashed line with alpha=-1.27+-0.10 corresponds to the standard M_B*=-20.2. Blue dotted line with alpha=-1.22+-0.09 corresponds to the `reduced' void value of M_B*=-19.2. The large deficiency of galaxies with M_B > -13.5 mag at least partly is due to the SDSS spectral database selection against LSB galaxies.

See details in Paper I (Pustilnik and Tepliakova, MNRAS, 2011, 415, 1188-1201)

15 December 2011