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...

ABSTRACT First Person is a series of interviews with the first authors selection papers published in Journal Cell Science, helping researchers promote themselves alongside their papers. Ezgi Odabasi author on ‘ CCDC66 regulates primary cilium length and signaling via interactions transition zone axonemal proteins’, JCS. postdoc lab Elif Nur Firat-Karalar at Koç University, Istanbul, Turkey, inv...

Specifying Satellite handover procedures are proposed for investigating the satellite diversity (namely, the existing common coverage area between contiguous satellites) of some satellite constellations in order to provide an efficient handover strategy and QoS in multimedia applications. Based always on a tradeoff of the blocking and forced termination probabilities three different handover cr...

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,...

In this paper satellite handover procedures are proposed for investigating the satellite diversity (namely, the existing common coverage area between contiguous satellites) of some satellite constellations in order to provide an efficient handover strategy. Based always on a tradeoff of the blocking and forced termination probabilities three different handover criteria are examined for the appr...

Assume that a constellation of satellites is required to flight close a given nominal trajectory and that there is some freedom in the selection of the geometry of the constellation. If we are interested in avoiding large variations of the mutual distances between the spacecrafts, we can consider the possible existence of regions of zero relative radial acceleration with respect to the nominal ...