|
| 01/18/02
| |
SCHNEIDER Jean |
Observatoire de Paris |
| 5 place Jules Janssen | SF2A- ASHRA- |
|
92195 |
Meudon, France |
Presentation 1 : Invited
The French Groupe de Recherche en Exobiologie
Jean Schneider
The French "Groupe de Recherche en Exobiologie"
is a national body, sponsored by CNES and CNRS, devoted to
Exobiology.
I will describe its activities, centered on the study of
- Biodioversity on Earth as a reference and starting point
for the study of Life in the Universe
- Origins of Life on Earth as a template of primitive forms
of Life
- Organic Biochimestry in the Solar System and the
interstellar medium
- Life on extrasolar planets
- Philosophical and historical aspects of exobiology
It is part of the European Network on Exo/Astro/biology
and is affiliated to the NASA Astrobiology Institute
Presentation 2 : Oral
Search for terrestrial extrasolar planets: visible versus infrared
Jean Schneider
I review the physical bases of the search for telluric extrasolar planets in
two spectral ranges: the visible reflected light and the thermal emission in
the infrared. They both have their advantages and disadvantages, including
artefacts in the determination of planet physical parameters. I then give
the status of the different projects and initiatives regarding the
space-based detection of these planets: Darwin, Terrestrial Planet Finder
and others.