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 |
|