A vast ground-based observational effort was launched several years ago in order to prepare the optimal selection of targets for the COROT seismology programme. The first objective of this ground-based programme was to characterize as completely as possible all potential targets of the mission, in particular to determine their effective temperature

The Instituto de Astrofisica de Canarias (IAC, http://www.iac.es/) is promoting the construction of a segmented 10m Telescope to be placed at its Observatorio del Roque de Los Muchachos (ORM) in the island of La Palma, Spain. The Telescope scientific drivers are to achieve an outstanding image quality, to maximize the observing efficiency and to

We present the cross-identification and source photometry techniques used to process Herschel SPIRE imaging taken as part of the Herschel Multi-Tiered Extragalactic Survey (HerMES). Cross-identifications are performed in map-space so as to minimize source-blending effects. We make use of a combination of linear inversion and model selection

We have studied the host galaxies of a sample of radio-loud active galactic nuclei (AGNs) spanning more than 4 decades in the energy output of the nucleus. The core sample includes 40 low-power sources (BL Lac objects) and 22 high-power sources (radio-loud quasars) spanning the redshift range 0.15

The remarkable hot R Coronae Borealis (RCB) star DY Cen is revealed to be the first and only binary system to be found among the RCB stars and their likely relatives, including the extreme helium stars and the hydrogen-deficient carbon stars. Radial velocity determinations from 1982 to 2010 have shown that DY Cen is a single-lined spectroscopic

Context: UV observations of some massive globular clusters have revealed a significant population of very hot stars below the hot end of the horizontal branch (HB), the so-called blue hook stars. This feature might be explained either as a result of the late hot flasher scenario where stars experience the helium flash while on the white dwarf