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- W4249291295 abstract "view Abstract Citations (31) References (15) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Radio Optical Reference Frame. III. Additional Radio and Optical Positions in the Southern Hemisphere Russell, J. L. ; Jauncey, D. L. ; Harvey, B. R. ; White, G. L. ; Reynolds, J. E. ; Ma, C. ; Johnston, K. J. ; Nothnagel, A. ; Nicolson, G. ; Kingham, K. ; Hindsley, R. ; de Vegt, C. ; Zacharias, N. ; Malin, D. F. Abstract Radio and optical positions are presented for southern hemisphere extragalactic sources from the Parkes 2.7 GHz survey. Sixty-one sources were observed with Mark III VLBI at 8.4 GHz (X band) between Tidbinbilla, Australia and Hartebeesthoek, South Africa. The results presented are part of the effort to establish a global reference frame of 400 extragalactic radio sources. Radio positions with ~10 milliarcsec errors have been estimated for 39 sources not previously in our radio reference frame catalog, and provisional positions were obtained for two additional sources, bringing the total number of catalog sources to 276. The principal source of error is the uncalibrated ionosphere. Of the remaining sources five were completely undetected, six were either too faint or too resolved, and nine had previous catalog positions. Optical positions on the FK5 system have also been measured for four southern sources using prime focus plates from the Anglo-Australian 4 m telescope with an accuracy 0.06. This raises to 40 the number of radio sources with accurately measured positions for their optical counterparts. Publication: The Astronomical Journal Pub Date: June 1992 DOI: 10.1086/116213 Bibcode: 1992AJ....103.2090R Keywords: Extragalactic Radio Sources; Position (Location); Radio Astronomy; Reference Stars; Very Long Base Interferometry; Astrometry; Position Errors; Southern Sky; Astrophysics; SURVEYS; CATALOGS full text sources ADS | data products SIMBAD (200) NED (52) Related Materials (6) Part 1: 1990AJ.....99.1284M Part 2: 1991AJ....101.2266R Part 4: 1992AJ....104..891F Part 5: 1994AJ....107..379R Part 6: 1994AJ....108..725R Part 7: 1995AJ....110.3093Z" @default.
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- W4249291295 date "1992-06-01" @default.
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- W4249291295 title "A radio optical reference frame. III - Additional radio and optical positions in the Southern Hemisphere" @default.
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