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Follow-up of the 9C survey: initial results

Bolton, Rosemary C. and Cotter, Garret and Pearson, T. J. and Pooley, Guy G. and Readhead, A. C. S. and Riley, Julia M. and Waldram, Elizabeth M. (2003) Follow-up of the 9C survey: initial results. New Astronomy Reviews, 47 (4). pp. 367-371. ISSN 1387-6473.

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We present initial results from a follow-up of the 9C survey, complete to 25 mJy at 15 GHz, designed to assemble and investigate a sample of young radio sources. We have made radio continuum maps of 111 sources at frequencies spanning 1.4–43 GHz, and classified them according to their radio size and spectral index between 1.4 and 4.8 GHz. We find that selection at 15 GHz is twice as efficient at picking Gigahertz Peaked Spectrum (GPS) sources as selection at ∼5 GHz. Optical follow-up has now begun; imaging of GPS and compact steep spectrum sources suggests that a significant fraction of the host galaxies have close companions or disturbed morphologies.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Pearson, T. J.0000-0001-5213-6231
Readhead, A. C. S.0000-0001-9152-961X
Additional Information:© 2003 Elsevier. Available online 28 May 2003. RCB thanks PPARC for a research studentship. The Ryle Telescope is funded by PPARC. The VLA is operated by the National Radio Astronomy Observatory, which is a facility of the National Science Foundation, operated under cooperative agreement by Associated Universities, Inc.
Funding AgencyGrant Number
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Subject Keywords:Galaxies: active; Galaxies: evolution; Radio continuum: galaxies
Issue or Number:4
Record Number:CaltechAUTHORS:20170408-151026645
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Official Citation:Rosemary C. Bolton, Garret Cotter, T.J. Pearson, Guy G. Pooley, A.C.S. Readhead, Julia M. Riley, Elizabeth M. Waldram, Follow-up of the 9C survey: initial results, New Astronomy Reviews, Volume 47, Issues 4–5, September 2003, Pages 367-371, ISSN 1387-6473, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76034
Deposited By: 1Science Import
Deposited On:16 May 2017 22:44
Last Modified:03 Mar 2020 13:01

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