Space Astrometry With The Milli-Arcsecond Pathfinder Survey (MAPS): Mission Overview And Science Possibilities

Details Space Astrometry With The Milli-Arcsecond Pathfinder Survey (MAPS): Mission Overview And Science Possibilities Space Astrometry With The Milli-Arcsecond Pathfinder Survey (MAPS): Mission Overview And Science Possibilities

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd..16e..26g&link_type=abstract

Nomenclature, Precession and New Models in Fundamental Astronomy, 26th meeting of the IAU, Joint Discussion 16, 22-23 August 200

Astronomy and Astrophysics

Astronomy

Scientific paper

MAPS is a space-based, all-sky astrometric and photometric survey from 2nd through 15th magnitude with a 2010 launch date goal. The primary mission goal for MAPS is the generation of a 1-milliarcsecond (mas) all-sky astrometric catalog for the 2010 epoch. The instrument consists of a 15-cm telescope, a large (64 megapixel) active pixel sensor focal plane, and associated processing electronics, and is carried aboard a microsatellite bus in a 900-km, sun-synchronous low Earth orbit. MAPS technology, including the very large format detector, the onboard processing electronics, and next generation space-based GPS-receiver, will serve as a pathfinder in support of future space missions. A 1-mas (or better) all-sky survey through approximately 15th magnitude will have a tremendous impact on our current understanding of the galaxy and stellar astrophysics. MAPS science topics include: a kinematic and photometric exploration of the nearest star forming regions and associations; an understanding of the dynamics and membership of nearby open clusters; a survey of nearby stars that addresses the 130 missing systems within 10 pc; recalibration of the cosmic distance scale via distances to nearby clusters, and the period-luminosity relationship using high accuracy proper motion (Hipparcos and MAPS positions and a twenty year baseline) and parallax measurements; discovery of giant planets and brown dwarfs orbiting nearby stars; kinematic detection of galactic cannibalism and mergers in the Milky Way; and discovery of low-mass black holes and neutron stars in astrometric binaries.

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