Japan Geoscience Union Meeting 2015

Presentation information

International Session (Oral)

Symbol B (Biogeosciences) » B-AO Astrobiology & the Origin of Life

[B-AO01] Astrobiology: Origins, Evolution, Distribution of Life

Thu. May 28, 2015 2:15 PM - 4:00 PM 105 (1F)

Convener:*Kensei Kobayashi(Department of Chemistry and Biotechnology, Faculty of Engineering, Yokohama National University), Akihiko Yamagishi(Tokyo University of Pharmacy and Life Science, Department of Molecular Biology), Masatoshi Ohishi(Astronomy Data Center, National Astronomical Observatory of Japan), Eiichi Tajika(Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo), Takeshi Kakegawa(Graduate School of Science, Tohoku University), Shigeru Ida(Department of Earth and Planetary Science, Graduate School of Science and Technology, Tokyo Institute of Technology), Chair:Masatoshi Ohishi(Astronomy Data Center, National Astronomical Observatory of Japan), Motohide Tamura(The University of Tokyo, Graduate School of Science)

2:15 PM - 2:45 PM

[BAO01-07] Development of Astrobiology with Exoplanet Explorations

*Motohide TAMURA1 (1.University of Tokyo)

Keywords:exoplanet, infrared, habitable planet, red dwarf

Recent exoplanet researches have advanced significantly. More than 5000 exoplanets including promising candidates have been reported. Large telescopes like the Subaru Telescope have enabled the direct imaging observations of Jovian planets. As a result, it has been shown that various types of stars have various types of planets around them. In particular, the transit observations by the NASA's Kepler mission and the long-term radial-velocity monitoring from the ground have discovered many super-earths and Earth-size planets. However, those planets discovered by the Kepler mission are mostly to far to be followed-up; the low-mass habitable planets around nearby stars have not yet explored well. In order to study the universality of life under various environments, we study (1) to construct dedicated facility for long-term planet searches around red dwarfs (M-dwarfs) and (2) to conduct a large-scale survey for Earth-mass habitable planets around red dwarfs using the newly developed spectrometer IRD. Those habitable planets are the best targets for a study of life under non-Earth-like environs (around low-luminosity and with high stellar activities) using the TMT 30 meter telescope (expected FL in 2022).