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
	Aslan, Z.1; Gumerov, R.2; Jin, W.3; Khamitov, I.1; Maigurova, N.4; Pinigin, G.4; Tang, Z.3 ; Wang, S.3
刊名	ASTRONOMY & ASTROPHYSICS
	2010-02-01
卷号	510 期号:1 页码:1
关键词	astrometry reference systems
英文摘要	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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	CELESTIAL REFERENCE FRAME ; CATALOG
收录类别	SCI
语种	英语
WOS记录号	WOS:000274305100011
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/19969]
专题	上海天文台_天文地球动力学研究中心
作者单位	1.TUBITAK Natl Observ, TR-07058 Antalya, Turkey 2.Kazan VI Lenin State Univ, Kazan 420008, Russia 3.Shanghai Astron Observ, Shanghai 200030, Peoples R China 4.Nikolaev Astron Observ, UA-54030 Nikolayev, Ukraine
推荐引用方式 GB/T 7714	Aslan, Z.,Gumerov, R.,Jin, W.,et al. Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames[J]. ASTRONOMY & ASTROPHYSICS,2010,510(1):1.
APA	Aslan, Z..,Gumerov, R..,Jin, W..,Khamitov, I..,Maigurova, N..,...&Wang, S..(2010).Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames.ASTRONOMY & ASTROPHYSICS,510(1),1.
MLA	Aslan, Z.,et al."Optical counterpart positions of extragalactic radio sources and connecting optical and radio reference frames".ASTRONOMY & ASTROPHYSICS 510.1(2010):1.