J/MNRAS/455/3249 Planck-ATCA Co-eval Observations project (Massardi+, 2016)
The Planck-ATCA Co-eval Observations project:
analysis of radio source properties between 5 and 217 GHz.
Massardi M., Bonaldi A., Bonavera L., De Zotti G., Lopez-Caniego M.,
Galluzzi V.
<Mon. Not. R. Astron. Soc., 455, 3249-3262 (2016)>
=2016MNRAS.455.3249M 2016MNRAS.455.3249M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, radio ; Active gal. nuclei
Keywords: catalogues - galaxies: active - radio continuum: galaxies
Abstract:
The Planck-ATCA Co-eval Observations (PACO) project has yielded
observations of 464 sources with the Australia Telescope Compact Array
(ATCA) between 4.5 and 40GHz. The main purpose of the project was to
investigate the spectral properties of mm-selected radio sources at
frequencies below and overlapping with the ESA's Planck
satellite frequency bands, minimizing the variability effects by
observing almost simultaneously with the first two Planck
all-sky surveys. In this paper we present the whole catalogue of
observations in total intensity. By comparing PACO with the various
measures of Planck Catalog of Compact Sources (PCCS) flux
densities we found the best consistency with the PCCS 'detection
pipeline' photometry (DETFLUX) that we used to investigate the
spectral properties of sources from 5 to 217GHz. Of our sources, 91
percent have remarkably smooth spectrum, well described by a double
power-law over the full range. This suggests a single emitting region,
at variance with the notion that `flat' spectra result from the
superposition of the emissions from different compact regions,
self-absorbed up to different frequencies. Most of the objects show a
spectral steepening above ≃30GHz, consistent with synchrotron
emission becoming optically thin. Thus, the classical dichotomy
between flat-spectrum/compact and steep-spectrum/extended radio
sources, well established at cm wavelengths, breaks down at mm
wavelengths. The mm-wave spectra do not show indications of the
spectral break expected as the effect of `electron ageing', suggesting
young source ages.
Description:
The PACO samples were selected from the AT20G catalogue (Murphy et al.
2010, Cat. J/MNRAS/402/2403) down to flux densities well below the
expected detection limits for the first two Planck surveys in order to
investigate both sources that could be detected by Planck and the
contribution to confusion below the satellite detection limits.
Poisson fluctuations due to unresolved extragalactic radio sources
are, in fact, the main contaminant of Planck cosmic microwave
background (CMB) maps on angular scales smaller than 20-30arcmin at
frequencies of up to ∼100GHz and are dominated by sources just
below the detection limit
The final list of sources observed in the framework of the PACO
project has 482 AT20G sources at Galactic latitude |b|>5°
classified as extragalactic.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
paco.dat 387 2343 PACO full sample catalogue
pacopccs.dat 313 264 PACO full catalogue of integrated flux densities
and PLANCK matches
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See also:
J/MNRAS/402/2403 : Australia Tel. 20GHz Survey Catalog, AT20G (Murphy+, 2010)
J/MNRAS/415/1597 : PACO catalogue of bright sources (Massardi+, 2011)
J/MNRAS/416/559 : PACO faint sources catalog (Bonavera+, 2011)
J/MNRAS/428/1845 : PACO spectrally selected sample (Bonaldi+, 2013)
Byte-by-byte Description of file: paco.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- --- [AT20G]
6- 19 A14 --- AT20G AT20G name (JHHMMSS+DDMMSS)
22- 31 F10.7 h RAhour right ascension in decimal hours (J2000)
33- 43 F11.7 deg DEdeg Declination in decimal degrees (J2000)
46- 55 A10 "date" Obs.date Observing date
57 A1 --- fs [s.] Flag "s" to identify epochs within 10days
from Planck observations
59 A1 --- fe [e.] Flag "e" for extended sources
60 A1 --- l_S4732 Limit flag on S4732
61- 65 I5 mJy S4732 Flux at PACO frequency S4732 MHz
66 A1 --- l_S5244 Limit flag on S5244
67- 71 I5 mJy S5244 Flux at PACO frequency S5244 MHz
72 A1 --- l_S5756 Limit flag on S5756
73- 77 I5 mJy S5756 Flux at PACO frequency S5756 MHz
78 A1 --- l_S6268 Limit flag on S5756
79- 83 I5 mJy S6268 Flux at PACO frequency S6268 MHz
84 A1 --- l_S8232 Limit flag on S8232
85- 89 I5 mJy S8232 Flux at PACO frequency S8232 MHz
90 A1 --- l_S8744 Limit flag on S8744
91- 95 I5 mJy S8744 Flux at PACO frequency S8744 MHz
96 A1 --- l_S9256 Limit flag on S9256
97-101 I5 mJy S9256 Flux at PACO frequency S9256 MHz
102 A1 --- l_S9768 Limit flag on S9768
103-107 I5 mJy S9768 Flux at PACO frequency S9768 MHz
108 A1 --- l_S17232 Limit flag on S17232
109-113 I5 mJy S17232 Flux at PACO frequency S17232 MHz
114 A1 --- l_S17744 Limit flag on S17744
115-119 I5 mJy S17744 Flux at PACO frequency S17744 MHz
120 A1 --- l_S18256 Limit flag on S18256
121-125 I5 mJy S18256 Flux at PACO frequency S18256 MHz
126 A1 --- l_S18768 Limit flag on S18768
127-131 I5 mJy S18768 Flux at PACO frequency S18768 MHz
132 A1 --- l_S23232 Limit flag on S23232
133-137 I5 mJy S23232 Flux at PACO frequency S23232 MHz
138 A1 --- l_S23744 Limit flag on S23744
139-143 I5 mJy S23744 Flux at PACO frequency S23744 MHz
144 A1 --- l_S24256 Limit flag on S24256
145-149 I5 mJy S24256 Flux at PACO frequency S24256 MHz
150 A1 --- l_S24768 Limit flag on S24256
151-155 I5 mJy S24768 Flux at PACO frequency S24768 MHz
156 A1 --- l_S32232 Limit flag on S32232
157-161 I5 mJy S32232 Flux at PACO frequency S32232 MHz
162 A1 --- l_S32744 Limit flag on S32744
163-167 I5 mJy S32744 Flux at PACO frequency S32744 MHz
168 A1 --- l_S33256 Limit flag on S32744
169-173 I5 mJy S33256 Flux at PACO frequency S33256 MHz
174 A1 --- l_S33768 Limit flag on S33768
175-179 I5 mJy S33768 Flux at PACO frequency S33768 MHz
180 A1 --- l_S38232 Limit flag on S38232
181-185 I5 mJy S38232 Flux at PACO frequency S38232 MHz
186 A1 --- l_S38744 Limit flag on S38744
187-191 I5 mJy S38744 Flux at PACO frequency S38744 MHz
192 A1 --- l_S39256 Limit flag on S39256
193-197 I5 mJy S39256 Flux at PACO frequency S39256 MHz
198 A1 --- l_S39768 Limit flag on S39768
199-203 I5 mJy S39768 Flux at PACO frequency S39768 MHz
205-209 F5.1 mJy e_S4732 rms uncertainty on S4732
211-215 F5.1 mJy e_S5244 rms uncertainty on S5244
217-221 F5.1 mJy e_S5756 rms uncertainty on S5756
223-227 F5.1 mJy e_S6268 rms uncertainty on S6268
229-233 F5.1 mJy e_S8232 rms uncertainty on S8232
235-239 F5.1 mJy e_S8744 rms uncertainty on S8744
241-245 F5.1 mJy e_S9256 rms uncertainty on S9256
247-251 F5.1 mJy e_S9768 rms uncertainty on S9768
253-257 F5.1 mJy e_S17232 rms uncertainty on S17232
259-263 F5.1 mJy e_S17744 rms uncertainty on S17744
265-269 F5.1 mJy e_S18256 rms uncertainty on S18256
271-275 F5.1 mJy e_S18768 rms uncertainty on S18768
277-281 F5.1 mJy e_S23232 rms uncertainty on S23232
283-287 F5.1 mJy e_S23744 rms uncertainty on S23744
289-293 F5.1 mJy e_S24256 rms uncertainty on S24256
295-299 F5.1 mJy e_S24768 rms uncertainty on S24768
301-305 F5.1 mJy e_S32232 rms uncertainty on S32232
307-311 F5.1 mJy e_S32744 rms uncertainty on S32744
313-317 F5.1 mJy e_S33256 rms uncertainty on S33256
319-323 F5.1 mJy e_S33768 rms uncertainty on S33768
325-329 F5.1 mJy e_S38232 rms uncertainty on S38232
331-335 F5.1 mJy e_S38744 rms uncertainty on S38744
337-341 F5.1 mJy e_S39256 rms uncertainty on S39256
343-347 F5.1 mJy e_S39768 rms uncertainty on S39768
350-355 F6.3 --- a Best fit parameter a (G1)
358-363 F6.3 --- b Best fit parameter b (G1)
366-371 F6.3 --- v0 Best fit parameter v0 (G1)
374-379 F6.3 --- S0 Best fit parameter S0 (G1)
383-387 F5.3 --- chi2 Best fit parameter chi2
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Byte-by-byte Description of file: pacopccs.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 5 A5 --- --- [AT20G]
6- 19 A14 --- AT20G AT20G name (JHHMMSS+DDMMSS)
22- 31 F10.7 h RAhour Right ascension in decimal hours (J2000)
33- 43 F11.7 deg DEdeg Declination in decimal degrees (J2000)
45- 50 I6 mJy S5500 Integrated flux density at PACO frequency
5500MHz
52- 57 I6 mJy S9000 Integrated flux density at PACO frequency
9000MHz
59- 64 I6 mJy S18000 Integrated flux density at PACO frequency
18000MHz
66- 71 I6 mJy S24000 Integrated flux density at PACO frequency
24000MHz
73- 78 I6 mJy S33000 Integrated flux density at PACO frequency
33000MHz
80- 85 I6 mJy S39000 Integrated flux density at PACO frequency
39000MHz
88- 93 F6.1 mJy e_S5500 rms uncertainty on S5500
96-101 F6.1 mJy e_S9000 rms uncertainty on S9000
104-109 F6.1 mJy e_S18000 rms uncertainty on S18000
112-117 F6.1 mJy e_S24000 rms uncertainty on S24000
120-125 F6.1 mJy e_S33000 rms uncertainty on S33000
128-133 F6.1 mJy e_S39000 rms uncertainty on S39000
135-140 I6 mJy Sp30 Flux density at Planck frequency 30GHz
(central frequency 28.1GHz)
142-147 I6 mJy Sp44 Flux density at Planck frequency 44GHz
(central frequency 44.1GHz)
149-154 I6 mJy Sp70 Flux density at Planck frequency 70GHz
(central frequency 70.4GHz)
156-161 I6 mJy Sp100 Flux density at Planck frequency 100GHz
163-168 I6 mJy Sp143 Flux density at Planck frequency 143GHz
170-175 I6 mJy Sp217 Flux density at Planck frequency 217GHz
177-182 I6 mJy Sp353 Flux density at Planck frequency 353GHz
184-189 I6 mJy Sp545 Flux density at Planck frequency 545GHz
191-196 I6 mJy Sp857 Flux density at Planck frequency 857GHz
199-204 F6.1 mJy e_Sp30 rms uncertainty on e_Sp30
207-212 F6.1 mJy e_Sp44 rms uncertainty on e_Sp44
215-220 F6.1 mJy e_Sp70 rms uncertainty on e_Sp70
223-228 F6.1 mJy e_Sp100 rms uncertainty on e_Sp100
231-236 F6.1 mJy e_Sp143 rms uncertainty on e_Sp143
239-244 F6.1 mJy e_Sp217 rms uncertainty on e_Sp217
247-252 F6.1 mJy e_Sp353 rms uncertainty on e_Sp353
255-260 F6.1 mJy e_Sp545 rms uncertainty on e_Sp545
263-268 F6.1 mJy e_Sp857 rms uncertainty on e_Sp857
272-277 F6.3 --- a Best fit parameter a (G1)
281-286 F6.3 --- b Best fit parameter b (G1)
289-295 F7.3 --- v0 Best fit parameter ν0 (G1)
299-304 F6.3 --- S0 Best fit parameter S0 (G1)
309-313 F5.3 --- chi2 Best fit parameter chi2
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Global notes:
Note (G1): Best fit parameters in the double power law:
S(ν)=S0/[(ν/ν0)-a+(ν/ν0)-b], where
ν is the frequency and S is the flux density in Jy.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 29-Jul-2016