Paper:	Compactness of Weak Radio Sources at High Frequencies
Volume:	402, Approaching Micro-Arcsecond Resolution with VSOP-2: Astrophysics and Technologies
Page:	448
Authors:	Majid, W.; Fomalont, E.; Bagri, D.
Abstract:	We have obtained 8.4 GHz VLBA observations of a 31-GHz complete sample of ∼ 100 sources between 10 and 100 mJy. The main goals of these observations are: to determine the angular size, radio spectra and identification for a weak sample of high frequency sources; to find the fraction of sources which have sufficiently compact emission for use as calibrators for VLBI observations; and for design considerations of the proposed DSN Array. We find that a large fraction of observed sources have VLBI detections. A majority of these sources have most of their emission in a compact < 1 mas radio core, with remaining sources having steep radio spectra. The source list was provided from GBT observations to remove discrete sources in the CBI fields.

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