Matches in SemOpenAlex for { <https://semopenalex.org/work/W3105634801> ?p ?o ?g. }
- W3105634801 abstract "We outline an approach yielding proper motions with higher precision than exists in present catalogs for a sample of stars in the Kepler field. To increase proper motion precision we combine first moment centroids of Kepler pixel data from a single Season with existing catalog positions and proper motions. We use this astrometry to produce improved reduced proper motion diagrams, analogous to a Hertzsprung-Russell diagram, for stars identified as Kepler Objects of Interest. The more precise the relative proper motions, the better the discrimination between stellar luminosity classes. With UCAC4 and PPMXL epoch 2000 positions (and proper motions from those catalogs as quasi-bayesian priors) astrometry for a single test Channel (21) and Season (0) spanning two years yields proper motions with an average per-coordinate proper motion error of 1.0 millisecond of arc per year, over a factor of three better than existing catalogs. We apply a mapping between a reduced proper motion diagram and an HR diagram, both constructed using HST parallaxes and proper motions, to estimate Kepler Object of Interest K-band absolute magnitudes. The techniques discussed apply to any future small-field astrometry as well as the rest of the Kepler field." @default.
- W3105634801 created "2020-11-23" @default.
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- W3105634801 date "2014-10-30" @default.
- W3105634801 modified "2023-09-26" @default.
- W3105634801 title "A TECHNIQUE TO DERIVE IMPROVED PROPER MOTIONS FORKEPLEROBJECTS OF INTEREST" @default.
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- W3105634801 doi "https://doi.org/10.1088/0004-6256/148/6/108" @default.
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