We report the discovery of 3 previously unseen X-ray point sources detected in a 5ks Chandra/ACIS observation starting on 2007-07-31.14 UT as part of our ongoing Chandra/HST M31 transient program. The sources were detected at the edge of the FoV, on the ACIS-S chips, which explains the larger than usual positional errors. Notes: - All coordinates

The STARE telescope of the High Altitude Observatory (HAO), Boulder is maintained by the Instituto de Astrofísica de Canarias (IAC) at the Observatorio del Teide (OT) on Tenerife. The STARE instrument has been updated in spring 2006 and forms part of the TrES network, which consists of two more telescopes located in the USA (PSST, Lowell

The measurement of the Sr I line with full polarimetry and spatial resolution with THEMIS has provided the unexpected result of an apparent correlation between the Hanle effect signals and the Zeeman effect signals on this line. Traditionnally, Hanle effect signals in linear polarisation have been interpreted as the signature of unorganized

We describe the discovery of a massive transiting hot Jupiter with a very short orbital period (1.30619 days), which we name TrES-3. From spectroscopy of the host star GSC 03089-00929, we measure Teff=5720+/-150 K, logg=4.6+/-0.3, and vsini

The TrES project is designed to search for exoplanetary transits using three wide-field optical telescopes of 10-cm in diameter, in three different observatories. We describe the instruments and strategies used by the team, which has been working as a network since 2003. We summarize the major findings and difficulties faced during these years

Aims:OO Serpentis is a deeply embedded pre-main sequence star in the Serpens NW star-forming region. The star went into outburst in 1995 and gradually faded afterwards. In many respects its eruption resembled the well-known FU Orionis-type (FUor) or EX Lupi-type (EXor) outbursts. Since very few such events have ever been documented at infrared