2017ApJS..230....7P

Query : 2017ApJS..230....7P

2017ApJS..230....7P - Astrophys. J., Suppl. Ser., 230, 7-7 (2017/May-0)

An accurate flux density scale from 50 MHz to 50 GHz.

PERLEY R.A. and BUTLER B.J.

Abstract (from CDS):

The flux-density scale of Perley & Butler is extended downward to ∼50 MHz by utilizing recent observations with the Karl G. Jansky Very Large Array (VLA) of 20 sources between 220 MHz and 48.1 GHz, and legacy VLA observations at 73.8 MHz. The derived spectral flux densities are placed on an absolute scale by utilizing the Baars et al. values for Cygnus A (3C405) for frequencies below 2 GHz, and the Mars-based polynomials for 3C286, 3C295, and 3C196 from Perley & Butler above 2 GHz. Polynomial expressions are presented for all 20 sources, with accuracy limited by the primary standards to 3%-5% over the entire frequency range. Corrections to the scales proposed by Perley & Butler, and by Scaife & Heald are given.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): instrumentation: interferometers - methods: data analysis - methods: observational - techniques: interferometric - telescopes - telescopes

VizieR on-line data: <Available at CDS (J/ApJS/230/7): table2.dat table5.dat table10.dat>

Simbad objects: 25

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Number of rows : 25
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 VSOP J0134-3629 Rad 01 34 12.0 -36 29 14           ~ 4 0
2 3C 48 QSO 01 37 41.2996631208 +33 09 35.080388820   16.62 16.20     ~ 2815 2
3 6C 021252+733537 BLL 02 17 30.81335327 +73 49 32.6217355     19.00 18.97   ~ 455 1
4 NGC 1316 BL? 03 22 41.789 -37 12 29.52 9.81 9.15 8.53 7.66   ~ 1387 1
5 NAME Per B AGN 04 37 04.37535450 +29 40 13.8179631   21.7       ~ 514 2
6 LEDA 745026 Sy2 04 44 37.7077672896 -28 09 54.445127796   18.5       ~ 90 1
7 NAME Pic A Sy1 05 19 49.7229323856 -45 46 43.852662732   15.73 15.77 14.85   ~ 666 1
8 ICRF J052109.8+163822 Sy1 05 21 09.88596258 +16 38 22.0515459   19.37 18.84 18.480   ~ 851 1
9 M 1 SNR 05 34 30.9 +22 00 53           ~ 6193 1
10 ICRF J054236.1+495107 Sy1 05 42 36.13789710 +49 51 07.2337139   18.45 17.80 17.210   ~ 1493 1
11 3C 196 Sy1 08 13 36.0561170112 +48 13 02.644966020   18.36 17.79     ~ 551 2
12 NAME Hya A LIN 09 18 05.66848602 -12 05 43.8060823   14.38 14.8     ~ 1012 1
13 ACO 780 ClG 09 18 30 -12 15.7           ~ 453 0
14 8C 1150+812 QSO 11 53 12.49922322 +80 58 29.1545718     19.40 18.54   ~ 237 1
15 M 87 AGN 12 30 49.42338414 +12 23 28.0436859 10.16 9.59 8.63   7.49 ~ 7196 3
16 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4341 2
17 3C 295 Sy2 14 11 20.6 +52 12 09   22.34 20.80 18.54   ~ 979 5
18 NAME Hercules A rG 16 51 07.9886687784 +04 59 35.547131472     18.25     ~ 465 1
19 2C 1473 AGN 17 20 28.1680537512 -00 58 46.582453920   15.36       ~ 324 1
20 8C 1803+784 BLL 18 00 45.6838528560 +78 28 04.018028016   16.4 15.90 15.46   ~ 741 1
21 ICRF J182931.7+484446 Sy1 18 29 31.7809732968 +48 44 46.160168892   17.05 16.81 16.860   ~ 688 1
22 4C 40.40 Rad 19 59 20.4 +40 44 20           ~ 100 0
23 NAME Cyg A Sy2 19 59 28.35656837 +40 44 02.0972325   16.22 15.10     ~ 2368 2
24 2MASX J22142575-1701362 G 22 14 25.752 -17 01 36.29     17.8     ~ 164 1
25 3C 461 BL? 23 23 24.000 +58 48 54.00     14.30     ~ 2792 1

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