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Space Science cource, Department of Physics, Faculty of Science, Kagoshima University Omodaka-Kameno-Imai Laboratory (Observational Astronomy) Kagiyama-Nakamura Laboratory (Particle Cosmology) Nishio Laboratory (Satellite Meteorology) Tateno Laboratory (Physiology) Nedachi Laboratory (Archaeology) Research Fields in the Omodaka-Kameno-Imai Lab. Astrometry of the Milky Way Galaxy 3-D structure and Dynamics Annual parallaxes of stellar/interletellar masers Period-luminosity relation of AGB (Asymptotic Giant Branch) stars Evolution and Lifecycles of stars Mass-accretion and outflows of protostars Mass-loss from evolved stars High-energy Astrophysics Accretion disks in dwarf novae AGN (Active Galactic Nuclei) Astrometry with the VERA and 1-m telescopes − 3-D map of the Milky Way − Why 3-D mapping and Dynamics? The world’s first atlas of our galaxy Distribution of stars, gas, and dark matter QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB How to measure distances to stars? Annual parallax … triangulation with earth’s orbit as a baseline Challenging 10-μarcsec precision … to measure whole the milky way Maser sources as trig points … observations using VERA AGB variable stars as standard candles … observations using 1-m telescope Annual parallax of the maser source S Crt at 350 pc (Tsushima 2007) QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB Evolution and Lifecycles of Stars Protostars Mass accretion process … How stars weigh? • • Molecular clouds : building block of stars QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB Accreting and rotating disks Outflows … Disposer of angular momenta Evolved stars Pulsation and mass-loss processes at the end of star life Acceleration and collimation in AGB stars and pre-planetary nebulae Recycle of synthesized elements into interstellar space Water fountain of the evolved star W43A (Imai et al. 2002) Microjet in the protostar S106 FIR (Furuya et al. 1999) QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB Evolve Kirk Woellert/National Science Foundation QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB High-Energy Astrophysics Dwarf Novae Mass accretion in close-binary systems • Mass supply form a companion star • Accretion disk around a white dwarf Variability … Outbursts, Superoutbursts, and Superhumps • QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB Light curve of the dwarf nova V844 Her (Oizumi et al. 2007) Lightcurve measurements to probe disk instability Active Galactic Nuclei Mass accretion onto supermassive black hole in the center of galaxies The most powerful engines in the univers, up to 1041 W Relativistic jets : v~99% of the speed of light QuickTimeý Dz TIFFÅià• èkǻǵÅj êLí£ÉvÉçÉOÉâÉÄ Ç™Ç±ÇÃÉsÉNÉ`ÉÉǾå©ÇÈǞǽDžÇÕïKóvÇÇ• ÅB Jets of the active galaxy NGC 1052 (Kameno et al. 2003) Astronomy Telescopes operated by us 1-m Optical / IR telescope (Iriki Observatory) 1-m Opt/IR Telescope VERA 20m radio telescope (Iriki Observatory) 6-m radio telescope VERA 20-m Radio Telescope (Kinkowan Park Observatory) Very-Long-Baseline Interferometry 6-m Radio Telescope VSOP-2 : Space VLBI project (to be launched in 2012) ASTRO-G Satellite for VSOP-2 (artist’s impression) Membership Staffs (4) Professor/Executive : OMODAKA, Toshihiro Associate Professor : KAMENO, Seiji Assistant Professor : IMAI, Hiroshi Research Fellow : NAKAGAWA, Akiharu Students (26) Graduated (PhD) : 1 Graduated (Master) : 14 Undergraduate : 11 Correspondence http://astro.sci.kagoshima-u.ac/ Mail: [email protected] [email protected] Phone/FAX : 099-285-8960 Address : Omodaka-Kameno-Imai Lab. Department of Physics, Faculty of Science Kagoshima University 1-21-35 Korimoto, Kagoshima, 890-0065 JAPAN