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JASMINE: constructor of the dynamical structure of the Galactic bulge

Published online by Cambridge University Press:  01 July 2007

N. Gouda ,
Y. Kobayashi ,
Y. Yamada ,
T. Yano ,
T. Tsujimoto ,
M. Suganuma ,
Y. Niwa  and
M. Yamauchi
N. Gouda
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588, Japan email: naoteru.gouda@nao.ac.jp, yuki@merope.mtk.nao.ac.jp, yano.t@nao.ac.jp, taku.tsujimoto@nao.ac.jp, suganuma@merope.mtk.nao.ac.jp, kazin.niwa@nao.ac.jp
Y. Kobayashi
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588, Japan email: naoteru.gouda@nao.ac.jp, yuki@merope.mtk.nao.ac.jp, yano.t@nao.ac.jp, taku.tsujimoto@nao.ac.jp, suganuma@merope.mtk.nao.ac.jp, kazin.niwa@nao.ac.jp
Y. Yamada
Affiliation:
Department of Physics, Kyoto University, Kyoto, 606-8502, Japan email: yamada@scphys.kyoto-u.ac.jp
T. Yano
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588, Japan email: naoteru.gouda@nao.ac.jp, yuki@merope.mtk.nao.ac.jp, yano.t@nao.ac.jp, taku.tsujimoto@nao.ac.jp, suganuma@merope.mtk.nao.ac.jp, kazin.niwa@nao.ac.jp
T. Tsujimoto
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588, Japan email: naoteru.gouda@nao.ac.jp, yuki@merope.mtk.nao.ac.jp, yano.t@nao.ac.jp, taku.tsujimoto@nao.ac.jp, suganuma@merope.mtk.nao.ac.jp, kazin.niwa@nao.ac.jp
M. Suganuma
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588, Japan email: naoteru.gouda@nao.ac.jp, yuki@merope.mtk.nao.ac.jp, yano.t@nao.ac.jp, taku.tsujimoto@nao.ac.jp, suganuma@merope.mtk.nao.ac.jp, kazin.niwa@nao.ac.jp
Y. Niwa
Affiliation:
National Astronomical Observatory of Japan, Mitaka, Tokyo, 181-8588, Japan email: naoteru.gouda@nao.ac.jp, yuki@merope.mtk.nao.ac.jp, yano.t@nao.ac.jp, taku.tsujimoto@nao.ac.jp, suganuma@merope.mtk.nao.ac.jp, kazin.niwa@nao.ac.jp
M. Yamauchi
Affiliation:
Department of Astronomy, Graduate School of Science, The University of TokyoHongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan email: yamauchi@merope.mtk.nao.ac.jp
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Abstract

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We introduce a Japanese space astrometry project which is called JASMINE. JASMINE (Japan Astrometry Satellite Mission for INfrared Exploration) will measure distances and tangential motions of stars in the Galactic bulge with yet unprecedented precision. JASMINE will operate in z-band whose central wavelength is 0.9 micron. It will measure parallaxes, positions with accuracy of about 10 micro-arcsec and proper motions with accuracy of about 10 micro- arcsec/year for the stars brighter than z=14 mag. The number of stars observed by JASMINE with high accuracy of parallaxes in the Galactic bulge is much larger than that observed in other space astrometry projects operating in optical bands. With the completely new “map of the Galactic bulge” including motions of bulge stars, we expect that many new exciting scientific results will be obtained in studies of the Galactic bulge. One of them is the construction of the dynamical structure of the Galactic bulge. Kinematics and distance data given by JASMINE are the closest approach to a view of the exact dynamical structure of the Galactic bulge.

Presently, JASMINE is in a development phase, with a target launch date around 2016. We comment on the outline of JASMINE mission, scientific targets and a preliminary design of JASMINE in this paper.

Keywords

infrared: general — astrometry — Galaxy: bulge
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S245: Formation and Evolution of Galaxy Bulges , July 2007 , pp. 355 - 358
Copyright
Copyright © International Astronomical Union 2008

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