Submilliarcsecond astrometry via VLB. I. Relative position of the radio sources 3C 345 and NRAO 512
Journal Article
·
· Astron. J.; (United States)
OSTI ID:5874162
The relative position and relative proper motion of the radio sources 3C 345 and NRAO 512 were estimated from four sets of very-long-baseline interferometric observations, spaced between October 1971 and May 1974. Use of phase-connection techniques yielded the result ..cap alpha.. (3C345-NRAO 512) =2/sup m/ 29/sup s/.436 68 +- 0/sup s/.000 03 delta (3C345-NRAO 512) =1' 40''.726 3 +- 0''.000 3 for the separation in 1950.0 coordinates of the centers of brightness of the compact components of the two sources, and an upper bound of 0''.000 5 per year on their relative proper motion (70% estimated confidence limits).
- Research Organization:
- Department of Earth and Planetary Sciences and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- OSTI ID:
- 5874162
- Journal Information:
- Astron. J.; (United States), Journal Name: Astron. J.; (United States) Vol. 84:10; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
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