2012MNRAS.421.1644R

Query : 2012MNRAS.421.1644R

2012MNRAS.421.1644R - Mon. Not. R. Astron. Soc., 421, 1644-1660 (2012/April-1)

Spectral index properties of milliJansky radio sources.

RANDALL K.E., HOPKINS A.M., NORRIS R.P., ZINN P.-C., MIDDELBERG E., MAO M.Y. and SHARP R.G.

Abstract (from CDS):

At the faintest radio flux densities (S1.4< 10 mJy), conflicting results have arisen regarding whether there is a flattening of the average spectral index between a low radio frequency (325 or 610 MHz) and, for example, 1.4 GHz. We present a new catalogue of 843-MHz radio sources in the European Large Area ISO Survey-South 1 field, which contains the sources, their Australia Telescope Large Area Survey (ATLAS) counterparts and the spectral index distribution of the sources as a function of flux density. We do not find any statistically significant evidence for a trend towards flatter spectral indices with decreasing flux density. We then investigate the spectral index distribution with redshift for those sources with reliable redshifts and explore the infrared properties. An initial sample of faint compact steep-spectrum sources in ATLAS are also presented, with a brief overview of their properties. The collimated outflows of the planetary nebula Hu 1-2: proper motion and radial velocity measurements

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

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

VizieR on-line data: <Available at CDS (J/MNRAS/421/1644): table1.dat>

Nomenclature: Table 1: MOST JHHMMSS+DDMMSS N=325.

CDS comments: ATLAS IDs SNNN are [MNC2008] CNNN in Simbad.

Simbad objects: 20

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Number of rows : 20
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 IRAS 00182-7112 Sy2 00 20 34.72104 -70 55 26.2488     20.6     ~ 143 0
2 ATELAIS J002905.22-433403.9 Rad 00 29 05.2 -43 34 08           ~ 9 1
3 ELAISR J003053-425215 Rad 00 30 53.32 -42 52 15.2           ~ 5 0
4 ELAISR J003247-442300C Rad 00 32 47.85 -44 22 54.2           ~ 2 0
5 ATELAIS J003249.31-442150.4 QSO 00 32 49.3077373656 -44 21 50.537367936   18.58   18.20   ~ 8 1
6 ATELAIS J003306.30-431029.8 rG 00 33 06.2982750696 -43 10 29.970057252   20.02 18.48 17.71   ~ 5 0
7 ATELAIS J003411.59-435817.0 Rad 00 34 11.56 -43 58 17.1           ~ 13 1
8 ATELAIS J003413.43-435802.4 Rad 00 34 13.4300 -43 58 02.470           ~ 5 0
9 LEDA 130034 EmG 00 34 29.064 -43 26 15.29   11.46   15.41   ~ 20 0
10 ELAIS S1 reg 00 34 44 -43 28.2           ~ 254 0
11 ESO 242-21 G 00 38 28.0364258088 -43 38 47.655312720   15.81 15.22 14.85   ~ 21 0
12 MCG-07-02-011 EmG 00 39 15.546 -43 04 31.54   13.91   12.94   ~ 27 0
13 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2282 1
14 ELAIS S2 reg 05 02 24 -30 35.9           ~ 18 0
15 NAME Lockman Hole reg 10 45 00.0 +58 00 00           ~ 910 0
16 Z 271-60 Sy2 13 44 42.1883001099 +55 53 13.596220922   15.68 14.91     ~ 958 3
17 ELAIS N3 reg 14 29 06 +33 06.0           ~ 14 0
18 IC 1127 SyG 15 34 57.22396 +23 30 11.6084   14.76 13.88     ~ 3090 4
19 ELAIS N1 reg 16 10 01 +54 30.6           ~ 489 0
20 ELAIS N2 reg 16 36 48.0 +41 01 45           ~ 168 0

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