The recent discovery of two distant satellites of Uranus suggests that there could be similar bodies orbiting Neptune. Previous surveys for distant satellites of Neptune have had relatively bright magnitude limits (B J ' 20:5) and would have missed satellites with magnitudes and colours similar to the 2 recently discovered Uranian satellites (R 20:4 and R 21:9). We have searched for satellites ...

We have studied the radial distribution of the early (E/S0) and late (S/Irr) types of satellites around bright host galaxies. We made a volume-limited sample of 4,986 satellites brighter than Mr = −18.0 associated with 2,254 hosts brighter than Mr = −19.0 from the SDSS DR5 sample. The morphology of satellites is determined by an automated morphology classifier, but the host galaxies are visuall...

We use the first Millennium Run simulation (MRS) to investigate the spatial locations of the satellites of relatively isolated host galaxies. The stellar masses of the MRS hosts span a range of 10.3 6 log10 [M∗/M⊙] 6 11.5, and host-satellite systems were selected via typical redshift space proximity criteria. The 3-D locations of the MRS satellites are well-fitted by a combination of a Navarro,...