2016MNRAS.457.1496W

Query : 2016MNRAS.457.1496W

2016MNRAS.457.1496W - Mon. Not. R. Astron. Soc., 457, 1496-1506 (2016/April-1)

10C continued: a deeper radio survey at 15.7 GHz.

WHITTAM I.H., RILEY J.M., GREEN D.A., DAVIES M.L., FRANZEN T.M.O., RUMSEY C., SCHAMMEL M.P. and WALDRAM E.M.

Abstract (from CDS):

We present deep 15.7 GHz observations made with the Arcminute Microkelvin Imager Large Array in two fields previously observed as part of the Tenth Cambridge (10C) survey. These observations allow the source counts to be calculated down to 0.1 mJy, a factor of 5 deeper than achieved by the 10C survey. The new source counts are consistent with the extrapolated fit to the 10C source count, and display no evidence for either steepening or flattening of the counts. There is thus no evidence for the emergence of a significant new population of sources (e.g. star forming) at 15.7 GHz flux densities above 0.1 mJy, the flux density level at which we expect star-forming galaxies to begin to contribute. Comparisons with the de Zotti et al. model and the SKADS Simulated Sky show that they both underestimate the observed number of sources by a factor of 2 at this flux density level. We suggest that this is due to the flat-spectrum cores of radio galaxies contributing more significantly to the counts than predicted by the models.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): catalogues - surveys - galaxies: active - radio continuum: galaxies

VizieR on-line data: <Available at CDS (J/MNRAS/457/1496): 10c_cont.dat>

Nomenclature: 10c_cont.dat: 10C JHHMMSS+DDMMSS N=495.

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0

Query : 2016MNRAS.457.1496W

Basic data :
NAME Lockman Hole -- Region defined in the Sky
Other object types: otypes_help 		reg ([SFD98])
ICRS coord. (ep=J2000) : 		10 45 00.0 +58 00 00 [ ] E 2011ApJ...734...99H
FK4 coord. (ep=B1950 eq=1950) : 		10 41 51.0 +58 15 47 [ ]
Gal coord. (ep=J2000) : 		149.7686 +52.0314 [ ]
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Hierarchy : number of linked objects
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Identifiers (4) :
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NAME Lockman Hole NAME the Hole NAME the LJM Hole [SFD98] J1048+5702

References (910 between 1850 and 2026) (Total 910)
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