Research on the Proper Motion in CSO OQ 208 [Compact Symmetric Object].

Details Research on the Proper Motion in CSO OQ 208 [Compact Symmetric Object]. Research on the Proper Motion in CSO OQ 208 [Compact Symmetric Object].

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pnaoc...4..121w&link_type=abstract

Astronomical Research and Technology. Publications of National Astronomical Observatories of China (ISSN 1672-7673), Vol. 4, No.

Astronomy and Astrophysics

Astronomy

Galaxies, Evolution, Separation Velocity

Scientific paper

The compact symmetric object OQ 208 was observed with Very Long Baseline Array at 5GHz and 8GHz bands. The obtained total intensity images show that OQ 208 consists of a southwestern and a northeast structure. Both of them are resolved into two components at 5GHz, while one more component is detected in the northeast region at 8GHz band. Analyzing images at 5GHz band taken in 5 epochs from 1993 to 2001, an estimate of separation velocity 0.037±0.006 mas/year) is derived as the relative motions of components A and D. Moreover, on the basis of the images in 9 epochs from 1994 to 2004, the proper motion 0.046±0.009 mas/year of component C moving away from component A at 8GHz band is also found.

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