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

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

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010a%26a...510a..10a&link_type=abstract

Astronomy and Astrophysics, Volume 510, id.A10

Astronomy and Astrophysics

Astrophysics

2

Astrometry, Reference Systems

Scientific paper

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.
Tables 2 and 3 giving the positions are only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/510/A10Present address: İstanbul Kültür University, Ataköy Yerleşkesi, 34156 Istanbul, Turkey

Affiliated with

Also associated with

No associations

Rating

Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-960795