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dc.contributor.authorKopeikin, Sergei M.eng
dc.date.issued2006eng
dc.description.abstractThe Origins Billions Star Survey is a mission concept addressing the astrophysics of extrasolar planets, Galactic structure, the Galactic halo and tidal streams, the Local Group and local supercluster of galaxies, dark matter, star formation, open clusters, the solar system, and the celestial reference frame by determining the position, parallax, and proper motion, as well as photometry, for billions of stars down to 23rd visual magnitude. It is capable of surveying the entire celestial sphere or dwelling on a star field by varying the cadence of observations. The mission's ability to measure objects fainter than 17th magnitude allows a large number of extragalactic compact objects to be observed, making the astrometric measurements absolute. The project mission accuracy is comparable to Gaia for a survey mission. Improved accuracy can be achieved by dwelling on a particular star field or by using the Gaia positions at 14th magnitude to improve the positions of objects at the 18th-23rd visual magnitudes.eng
dc.description.sponsorshipThis research was supported by the National Aeronautics and Space Administration under a grant for Origins Science Mission Concept Studies NRA NNH04ZSS001N.eng
dc.identifier.citationPublications of the Astronomical Society of the Pacific, 118: 1428-1442, 2006 Octobereng
dc.identifier.issn0004-6280eng
dc.identifier.urihttp://hdl.handle.net/10355/6920eng
dc.languageEnglisheng
dc.publisherThe Astronomical Society of the Pacificeng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publicationseng
dc.source.urihttp://www.journals.uchicago.edu/doi/pdf/10.1086/508903eng
dc.subjectgalactic structureeng
dc.subjectglacatic haloeng
dc.subjectstar formationeng
dc.subject.lcshStars -- Observationseng
dc.subject.lcshStars -- Proper motioneng
dc.subject.lcshDark matter (Astronomy)eng
dc.titleThe Origins Billions Star Survey: Galactic Explorereng
dc.typeArticleeng


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