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Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames

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dc.contributor.author Aslan Z.
dc.contributor.author Gumerov R.
dc.contributor.author Jin W.
dc.contributor.author Khamitov I.
dc.contributor.author Maigurova N.
dc.contributor.author Pinigin G.
dc.contributor.author Tang Z.
dc.contributor.author Wang S.
dc.date.accessioned 2018-09-18T20:01:35Z
dc.date.available 2018-09-18T20:01:35Z
dc.date.issued 2010
dc.identifier.issn 0004-6361
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/135848
dc.description.abstract We discuss the results of an investigation of astrometric positions of extragalactic radio sources from a list for the International Celestial Reference Frame. About 300 fields around extragalactic radio sources were observed during the years 2000-2003. The observations were performed mainly using two telescopes equipped with CCD cameras at TUG, Turkey (Russian-Turkish Telescope - RTT150) and at YAO (1 m telescope), (Kunming, China). The mean accuracies of the measured positions are 38 mas in right ascension and 35 mas in declination. A comparison between the measured optical positions determined using the UCAC2 catalog and the radio positions from the current ICRF shows that the overall optical-minus- radio offsets are -4 and +15 mas for right ascension and declination, respectively. The formal internal errors of these mean offsets are 4 mas. The results of optical positions with respect to the reference catalogue 2MASS are also given. A search for a relation between optical and radio reference frames indicates that the orientation angles are near zero within their accuracy of about 5 mas. The link accuracy becomes 3 mas when our observations are combined with other studies. © ESO, 2010.
dc.relation.ispartofseries Astronomy and Astrophysics
dc.subject Astrometry
dc.subject Reference systems
dc.title Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 510
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00046361-2010-510-1-SID77149175411


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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