MAXI J1659-152 which was discovered using Swift as a Gamma-ray-burst, was later on confirmed as a candidate Galactic black-hole X-ray binary. The source was intensively followed up by Swift and RXTE during its X-ray outburst and was revealed as a shortest period (2.4 hrs) black-hole X-ray binary. Following the X-ray outburst, we triggered the ESO

The VIRUS spectrograph will be installed on the upgraded Hobby-Eberly Telescope (HET) in the Spring of 2012. This instrument will feature an array of integral field units and will be used primarily to conduct a survey for the HET Dark Energy Experiment (HETDEX). The VIRUS instrument will be configured to allow parallel observations during the times

Not Available

We present UVOT imaging of a sample of 25 nearby star forming galaxies. Most of these galaxies are included in the Spitzer Infrared Nearby Galaxies Survey (SINGS) and have been observed by Spitzer in the Infrared as well as at optical wavelengths. We use the UVOT near ultraviolet imaging in conjunction with ground based optical and Spitzer infrared

Context. Observations of transiting extrasolar planets are of key importance to our understanding of planets because their mass, radius, and mass density can be determined. These measurements indicate that planets of similar mass can have very different radii. For low-density planets, it is generally assumed that they are inflated owing to their

We report the detection of CoRoT-23b, a hot Jupiter transiting in front of its host star with a period of 3.6314 ± 0.0001 days. This planet was discovered thanks to photometric data secured with the CoRoT satellite, combined with spectroscopic radial velocity (RV) measurements. A photometric search for possible background eclipsing binaries