We describe the serendipitous discovery in the spectroscopic data of the Sloan Digital Sky Survey of a starlike object, SDSS J103913.70+533029.7, at a heliocentric radial velocity of +1012 km s-1. Its proximity in position and velocity to the spiral galaxy NGC 3310 suggests an association with the galaxy. At this distance, SDSS J103913.70+533029.7

We have obtained high-resolution UVES spectra with S/N>100 to accurately characterize the stellar parameters for the transiting planet-hosting star OGLE-TR-10. The obtained values were used to rederive the planetary radius and mean density.

Not Available

Essentially all galaxies within roughly 4 Mpc of the Milky Way are confined to a thin sheet-like structure, here referred to as the ``Local Sheet''. Our perspective from within a structure like those seen on much larger scales provides us with unique opportunities to search for environmental imprints on constituent galaxies. Clues about the nature

We report on the search for planets orbiting 46 nearby young stars performed at the State Observatory of Turingia (TLS) by means of a radial velocity survey. The aim of this program is to test the theories of formation/evolution of planetary systems. For 19(8) stars we can exclude planets with M sin i ≥ 1 M_J (5 M_J) and P ≤ 10 days; we find 1

Plans for future optical telescopes of diameter more than 10m are based on segmented mirrors, made up of hundreds or even thousands of segments. A challenge for these telescopes is the alignment in piston (cophasing) where phase differences between individual segments have to be reduced to a small fraction of the observing wavelength in order to