Présidents de session
Source catalogues and cross-identifications: Source catalogues and cross-identifications
- Gilles THEUREAU (GEPI, Paris Observatory and LPC2E, CNRS-Orléans)
The Gaia DR3 release, planned for mid 2022, expects to present a large range of new kind of data, among which Non-Single Stars, detected through the astrometric, photometric and spectroscopic instruments, i.e. a Catalogue of astrometric, eclipsing or spectroscopic binaries, plus combined solutions. We will give a summary of the current Gaia capabilities and limitations that are currently foreseen.
Within a few kiloparsecs around the Sun, we have access to a complete sample of ~20 Wolf-Rayet+O-star binaries. On the other hand, only one BH+O binary, Cygnus X-1, is detected in the solar neighbourhood thanks to the X-ray emission produced by the wind accretion process. If the former binaries are the progenitors of the latter, this discrepancy can be explained either by large natal kicks at...
The LOFAR Two-metre Sky Survey (LoTSS) is an ongoing sensitive, high-resolution 120-168MHz survey of the entire northern sky for which observations. LoTSS has a source density approximately 10 times higher than the most sensitive existing very wide-area radio-continuum surveys and we have already catalogued over 3,000,000 radio sources making it the largest survey to date. In this talk I will...
