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INVESTIGATION OF THE ERRORS IN SLOAN DIGITAL SKY SURVEY PROPER-MOTION MEASUREMENTS USING SAMPLES OF QUASARS

Author(s): Dong, Ruobing; Gunn, James E; Knapp, Gillian R; Rockosi, Constance; Blanton, Michael

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dc.contributor.authorDong, Ruobing-
dc.contributor.authorGunn, James E-
dc.contributor.authorKnapp, Gillian R-
dc.contributor.authorRockosi, Constance-
dc.contributor.authorBlanton, Michael-
dc.date.accessioned2022-01-25T14:57:55Z-
dc.date.available2022-01-25T14:57:55Z-
dc.date.issued2011-10en_US
dc.identifier.citationDong, Ruobing, Gunn, James, Knapp, Gillian, Rockosi, Constance, Blanton, Michael. (2011). INVESTIGATION OF THE ERRORS IN SLOAN DIGITAL SKY SURVEY PROPER-MOTION MEASUREMENTS USING SAMPLES OF QUASARS. ASTRONOMICAL JOURNAL, 142 (10.1088/0004-6256/142/4/116en_US
dc.identifier.issn0004-6256-
dc.identifier.urihttp://arks.princeton.edu/ark:/88435/pr1bk16p3x-
dc.description.abstractWe investigate in detail the probability distribution function (pdf) of the proper-motion measurement errors in the SDSS+USNO-B proper-motion catalog of Munn et al. using clean quasar samples. The pdf of the errors is well represented by a Gaussian core with extended wings, plus a very small fraction (<0.1%) of “outliers.” We find that while formally the pdf could be well fit by a five-parameter fitting function, for many purposes it is also adequate to represent the pdf with a one-parameter approximation to this function. We apply this pdf to the calculation of the confidence intervals on the true proper motion for an SDSS+USNO-B proper-motion measurement, and discuss several scientific applications of the SDSS proper-motion catalog. Our results have various applications in studies of the galactic structure and stellar kinematics. Specifically, they are crucial for searching hyper-velocity stars in the Galaxy.en_US
dc.language.isoen_USen_US
dc.relationhttps://ui.adsabs.harvard.edu/abs/2011AJ....142..116D/abstracten_US
dc.relation.ispartofASTRONOMICAL JOURNALen_US
dc.rightsFinal published version. Article is made available in OAR by the publisher's permission or policy.en_US
dc.titleINVESTIGATION OF THE ERRORS IN SLOAN DIGITAL SKY SURVEY PROPER-MOTION MEASUREMENTS USING SAMPLES OF QUASARSen_US
dc.typeJournal Articleen_US
dc.identifier.doidoi:10.1088/0004-6256/142/4/116-
dc.date.eissued2011-09-09en_US
pu.type.symplectichttp://www.symplectic.co.uk/publications/atom-terms/1.0/journal-articleen_US

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