The second extension of the International Celestial Reference Frame: ICRF-EXT.1

被引：163

作者：

Fey, AL

Ma, C

Arias, EF

Charlot, P

Feissel-Vernier, M

Gontier, AM

Jacobs, CS

Li, J

MacMillan, DS

机构：

[1] USN Observ, Washington, DC 20392 USA

[2] NASA, Space Geodesy Branch, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[3] Bur Int Poids & Mesures, F-92312 Sevres, France

[4] Observ Aquitain Sci Univers, CNRS, UMR 5804, F-33270 Floirac, France

[5] Observ Paris, UMR 8630, F-75014 Paris, France

[6] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[7] Shanghai Astron Observ, Shanghai 200030, Peoples R China

来源：

ASTRONOMICAL JOURNAL | 2004年 / 127卷 / 06期

关键词：

astrometry; catalogs; quasars : general; radio continuum : galaxies; reference systems; techniques : interferometric;

D O I：

10.1086/420998

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We use very long baseline interferometry data obtained between mid-1995 and the end of 2002 May together with older data to extend and revise the International Celestial Reference Frame ( ICRF). Revised positions of ICRF candidate and "other'' sources, based on inclusion of the additional data, are presented. Positions, in the frame of the ICRF, for an additional 109 new sources are also presented. All but four of the new sources are located north of delta = -30degrees. Positions of the ICRF defining sources remain unchanged. We present a summary of current astrometric and geodetic observing programs and discuss the evolution and future of the ICRF.

引用

页码：3587 / 3608

页数：22

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