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19 April 2024 |
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The Planck-ATCA Co-eval Observations (PACO) project: the bright sample | | Marcella Massardi
; Anna Bonaldi
; Laura Bonavera
; Marcos López-Caniego
; Gianfranco De Zotti
; Ronald D. Ekers
; | | Date: |
31 Dec 2010 | | Abstract: | The Planck-ATCA Co-eval Observations (PACO) have provided flux density
measurements at frequencies below and overlapping with Planck frequency bands
of suitably chosen samples of AT20G radio sources, almost simultaneously with
Planck observations. On the whole, we have observed with the Australia
Telescope Compact Array (ATCA) 482 sources in the frequency range between 4.5
and 40 GHz in the period between July 2009 and August 2010. Several sources
were observed more than once. In this paper we present the aims of the project,
the selection criteria, and the observation and data reduction procedures. We
also present the data in total intensity for a complete sample of 189 sources
with S(20 GHz)>500 mJy, Galactic latitude |b|>5{deg}, and declination
<-30{deg}, and some statistical analysis of the spectral behaviour and
variability of this sample, referred to as the "bright PACO sample". These data
are important to investigate confusion effects affecting Planck data on radio
sources. On the other hand, compared with the CMB dipole-based calibrated flux
densities measured by the Planck satellite, could be used to infer absolute
calibrations for ground based telescopes. To this end, we also provide some
test fluxes on bright calibrators. | | Source: | arXiv, 1101.0225 | | Services: | Forum | Review | PDF | Favorites | |
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