Accretion onto a black hole (BH) is the most viable explanation for the huge emitted power in active galaxies. A wealth of observations have shown the presence of a BH in many nearby inactive bulges, suggesting that all massive spheroids harbor a BH. At low redshift, fundamental correlations have been found between the BH mass and the luminosity

Recently, it has been showed that (136108) 2003 EL61 and its biggest satellite S/2005 (136108) 1,(55636) 2002 TX300, (13308) 1996 TO66 , OP32, 1995 SM55 and 2005 RR43 are part of a population trans-netunian objects (TNOs) clustered in the space of orbital parameters (41.6

In order to characterized the vertical atmospheric structure at the Teide Observatory (Tenerife, Spain), we are using two different remote sensing technics: SODAR (SOund Detection And Ranging) and SCIDAR (SCIncitillation Detection And Ranging) at this astronomical site. We present in this work the preliminar results on the comparison of the

We observed the neutron star X-ray transient 2S 1803-245 in quiescence with the X-ray satellite XMM-Newton, but did not detect it. An analysis of the X-ray bursts observed during the 1998 outburst of 2S 1803-245 gives an upper limit to the distance of

Two nights of phase-resolved medium-resolution Very Large Telescope spectroscopy of the extra-galactic low-mass X-ray binary LMCX-2 have revealed a 0.32 +/- 0.02 d spectroscopic period in the radial velocity curve of the HeII λ4686 emission line that we interpret as the orbital period. However, similar to previous findings, this radial velocity

Eight tiles were observed with the UKIRT Wide-Field Camera (WFCAM) in the association during the science verification phase on 2005 April 813 covering a total of 6.5deg2 in ZY JHK broad-band filters. (3 data files).