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## PACOFSCAT - Planck-ATCA Co-eval Observations (PACO) Project Faint Sample Catalog |
HEASARC Archive |

The PACO faint sample, presented in this paper, is made up of 159 sources with 20-GHz flux densities >= 200 mJy in the SEP region (ecliptic latitude < -75 degrees) and with 3h < RA < 9h, Dec. < -30 degrees. Near the Ecliptic Poles, Planck's scan circles intersect. Therefore, the area is covered many times, and Planck's sensitivity is maximal in these regions. A full description of the PACO project and of its main goals is given in Massardi et al. (2011, MNRAS, 415, 1597). The aims specific to the PACO faint sample are as follows: (i) Extend to fainter flux densities the characterization of radio source spectra from 4.5 GHz to the Planck frequency range; (ii) Extend the determination of source counts at ~ 33 and ~ 40 GHz obtained from the analysis of the ERCSC downwards in flux density by a factor of ~ 5. Going down in flux density is important to control the contamination of CMB maps by faint radio sources.

This table contains the catalog of 674 observations of 152 of the 159 sources that comprise the 'faint PACO sample'. Thus, each row in this table corresponds to a specific observation of a source, and there can be several rows for any source, corresponding to different observations. The ATCA observations were made in 6 2-GHz wide observing bands: 4732 - 6780 MHz, 8232 - 10280 MHz, 17232 - 19280 MHz, 23232 - 25280 MHz, 32232 - 34280 MHz and 38232 - 40280 MHz. In order to properly define the detailed source spectral behavior, the authors have split each 2-GHz band into 4 x 512 MHz sub-bands, and calibrated each sub-band independently. Thus, for each observation, the flux density at 24 frequencies is given. The frequency identifier in the flux density appears (at least to this HEASARC scientist) to be the lower frequency of the sub-band rather than its central frequency.

In order to provide the easiest way to extrapolate the observed counts or
model predictions from one frequency to another, the authors have modeled the
observed source spectra. As their observations covered a wide frequency range
from 4.5 to 40 GHz over which a single power law is not enough to describe
the spectral behavior of the sources, they studied the spectra of the 174
point-like sources in this sample by fitting the observed data with a double
power law of the form S_{nu} = S_{0}/[(nu/nu_{0})^{-a} + (nu/nu_{0})^{-b}], where
nu is the frequency, S_{nu} is the flux density in Jy, and S_{0}, nu_{0}, a and
b are free parameters. The authors considered only those sources for which
they had at least four data points for each of the 2 x 2 GHz bands
considered. When observations at more than one epoch were available, the
authors chose the one with the greatest number of data points. Full details
of the fitting procedure are given in Section 3.1 of Massardi et al. (2011,
MNRAS, 415, 1597) and Section 4 of the reference paper.

The Planck-ATCA Co-eval Observations project: the faint sample Bonavera L., Massardi M., Bonaldi A., Gonzalez-Nuevo J., de Zotti G., Ekers R.D. <Monthly Notices of the Royal Astronomical Society, Volume 416, pp. 559-566 (2011)> =2011MNRAS.416..559B

**Name**

The AT20G source designation based on the J2000.0 equatorial source
coordinates, e.g., 'AT20G JHHMMSS+DDMMSS'.

**RA**

The Right Ascension of the radio source in the selected equinox. This
was given in J2000.0 decimal hours to a precision of 10^{-7} hours in the
original table.

**Dec**

The Declination of the radio source in the selected equinox. This
was given in J2000.0 decimal hours to a precision of 10^{-7} degrees in the
original table.

**LII**

The Galactic Longitude of the radio source.

**BII**

The Galactic Latitude of the radio source.

**Time**

The epoch of the ATCA observation given to the nearest day.

**Planck_Flag**

This flag is set to 's' to indicate that the epoch of the
observation was within 10 days of the Planck observations of this source.
The epochs before 2010 February have to be compared with the first Planck
survey, whereas the following epochs should be compared with the second Planck
survey.

**Extended_Flag**

This flag is set to 'e' to indicate that this is an extended
source. Of the original 159 sources comprising in the PACO faint sample which
were observed at least once at all the frequencies, bad weather conditions
affect all the runs for five sources (J034205-370320, J040848-750720,
J052006-454745, J062620-534151 and J064118-355433) and it was not possible to
repeat the observations. All of them are extended. Moreover, the results of
mapping and mosaicking in total intensity and polarization the core and the
western lobe of Pictor A, namely J051926-454554 and J051949-454643,
respectively, were to be be presented in a subsequent paper; these two sources
were not included in this table. Therefore, the PACO faint catalog contains
flux density measurements of 152 sources.

The classification of sources as point-like or extended was mostly taken from the AT20G catalog and integrated at 7 mm by the analysis of the source-phase closure and ratio between the data collected with long baselines and those collected with the whole array. For extended sources, the authors used the scalar flux density on the shortest baseline which, however, is only a lower limit to the real flux density. We have in total nine extended sources in the PACO faint sample, only four of which were classified as extended in the AT20G catalog. There are 20 observations of these 9 extended sources listed in this table.

**Flux_4732_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 4732 MHz.

**Flux_4732_MHz**

The flux density, in mJy, of the source at 4732 MHz on
the corresponding epoch of the observation.

**Flux_5244_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 5244 MHz.

**Flux_5244_MHz**

The flux density, in mJy, of the source at 5244 MHz on
the corresponding epoch of the observation.

**Flux_5756_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 5756 MHz

**Flux_5756_MHz**

The flux density, in mJy, of the source at 5756 MHz on
the corresponding epoch of the observation.

**Flux_6268_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 6268 MHz

**Flux_6268_MHz**

The flux density, in mJy, of the source at 6268 MHz on
the corresponding epoch of the observation.

**Flux_8232_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 8232 MHz

**Flux_8232_MHz**

The flux density, in mJy, of the source at 8232 MHz on
the corresponding epoch of the observation.

**Flux_8744_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 8744 MHz.

**Flux_8744_MHz**

The flux density, in mJy, of the source at 8744 MHz on
the corresponding epoch of the observation.

**Flux_9256_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 9256 MHz.

**Flux_9256_MHz**

The flux density, in mJy, of the source at 9256 MHz on
the corresponding epoch of the observation.

**Flux_9768_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 9768 MHz.

**Flux_9768_MHz**

The flux density, in mJy, of the source at 9768 MHz on
the corresponding epoch of the observation.

**Flux_17232_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation at
17232 MHz.

**Flux_17232_MHz**

The flux density, in mJy, of the source at 17232 MHz on
the corresponding epoch of the observation.

**Flux_17744_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 17744 MHz.

**Flux_17744_MHz**

The flux density, in mJy, of the source at 17744 MHz on
the corresponding epoch of the observation.

**Flux_18256_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 18256 MHz.

**Flux_18256_MHz**

The flux density, in mJy, of the source at 18256 MHz on
the corresponding epoch of the observation.

**Flux_18768_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 18768 MHz.

**Flux_18768_MHz**

The flux density, in mJy, of the source at 18768 MHz on
the corresponding epoch of the observation.

**Flux_23232_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 23232 MHz.

**Flux_23232_MHz**

The flux density, in mJy, of the source at 23232 MHz on
the corresponding epoch of the observation.

**Flux_23744_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 23744 MHz.

**Flux_23744_MHz**

The flux density, in mJy, of the source at 23744 MHz on
the corresponding epoch of the observation.

**Flux_24256_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 24256 MHz.

**Flux_24256_MHz**

The flux density, in mJy, of the source at 24256 MHz on
the corresponding epoch of the observation.

**Flux_24768_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 24768 MHz.

**Flux_24768_MHz**

The flux density, in mJy, of the source at 24768 MHz on
the corresponding epoch of the observation.

**Flux_32232_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 32232 MHz.

**Flux_32232_MHz**

The flux density, in mJy, of the source at 32232 MHz on
the corresponding epoch of the observation.

**Flux_32744_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 32744 MHz.

**Flux_32744_MHz**

The flux density, in mJy, of the source at 32744 MHz on
the corresponding epoch of the observation.

**Flux_33256_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 33256 MHz.

**Flux_33256_MHz**

The flux density, in mJy, of the source at 33256 MHz on
the corresponding epoch of the observation.

**Flux_33768_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 33768 MHz.

**Flux_33768_MHz**

The flux density, in mJy, of the source at 33768 MHz on
the corresponding epoch of the observation.

**Flux_38232_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 38232 MHz.

**Flux_38232_MHz**

The flux density, in mJy, of the source at 38232 MHz on
the corresponding epoch of the observation.

**Flux_38744_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 38744 MHz.

**Flux_38744_MHz**

The flux density, in mJy, of the source at 38744 MHz on
the corresponding epoch of the observation.

**Flux_39256_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 39256 MHz.

**Flux_39256_MHz**

The flux density, in mJy, of the source at 39256 MHz on
the corresponding epoch of the observation.

**Flux_39768_MHz_Limit**

This parameter is set to '>' if the corresponding
flux density is a lower limit to the actual value, i.e., the source is
extended and some flux was likely 'resolved out' in the observation
at 39768 MHz.

**Flux_39768_MHz**

The flux density, in mJy, of the source at 39768 MHz on
the corresponding epoch of the observation.

**Flux_4732_MHz_Error**

The uncertainty in the source flux density, in mJy, at
4732 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_5244_MHz_Error**

The uncertainty in the source flux density, in mJy, at
5244 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_5756_MHz_Error**

The uncertainty in the source flux density, in mJy, at
5756 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_6268_MHz_Error**

The uncertainty in the source flux density, in mJy, at
6268 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_8232_MHz_Error**

The uncertainty in the source flux density, in mJy, at
8232 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_8744_MHz_Error**

The uncertainty in the source flux density, in mJy, at
8744 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_9256_MHz_Error**

The uncertainty in the source flux density, in mJy, at
9256 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_9768_MHz_Error**

The uncertainty in the source flux density, in mJy, at
9768 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_17232_MHz_Error**

The uncertainty in the source flux density, in mJy, at
17232 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_17744_MHz_Error**

The uncertainty in the source flux density, in mJy, at
17744 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_18256_MHz_Error**

The uncertainty in the source flux density, in mJy, at
18256 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_18768_MHz_Error**

The uncertainty in the source flux density, in mJy, at
18768 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_23232_MHz_Error**

The uncertainty in the source flux density, in mJy, at
23232 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_23744_MHz_Error**

The uncertainty in the source flux density, in mJy, at
23744 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_24256_MHz_Error**

The uncertainty in the source flux density, in mJy, at
24256 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_24768_MHz_Error**

The uncertainty in the source flux density, in mJy, at
24768 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_32232_MHz_Error**

The uncertainty in the source flux density, in mJy, at
32232 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_32744_MHz_Error**

The uncertainty in the source flux density, in mJy, at
32744 MHz. The final error bars for each point source in each epoch have been
estimated as the square root of the square of the gain term multiplied by the
source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_33256_MHz_Error**

The uncertainty in the source flux density, in mJy,
at 33256 MHz. The final error bars for each point source in each epoch have
been estimated as the square root of the square of the gain term multiplied by
the source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_33768_MHz_Error**

The uncertainty in the source flux density, in mJy,
at 33768 MHz. The final error bars for each point source in each epoch have
been estimated as the square root of the square of the gain term multiplied by
the source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_38232_MHz_Error**

The uncertainty in the source flux density, in mJy,
at 38232 MHz. The final error bars for each point source in each epoch have
been estimated as the square root of the square of the gain term multiplied by
the source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_38744_MHz_Error**

The uncertainty in the source flux density, in mJy,
at 38744 MHz. The final error bars for each point source in each epoch have
been estimated as the square root of the square of the gain term multiplied by
the source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_39256_MHz_Error**

The uncertainty in the source flux density, in mJy,
at 39256 MHz. The final error bars for each point source in each epoch have
been estimated as the square root of the square of the gain term multiplied by
the source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Flux_39768_MHz_Error**

The uncertainty in the source flux density, in mJy,
at 39768 MHz. The final error bars for each point source in each epoch have
been estimated as the square root of the square of the gain term multiplied by
the source flux density plus the square of the noise term. See Section 2 of the
reference paper for a more complete discussion.

**Best_Fit_A**

The best-fit value of the parameter a (the first power-law
spectral index) in the spectral fit model (see Overview above for more
details).

**Best_Fit_B**

The best-fit value of the parameter b (the second power-law
spectral index) in the spectral fit model (see Overview above for more
details).

**Best_Fit_Nu_0**

The best-fit value of the reference frequency parameter
nu_{0}, in GHz, in the spectral fit model (see Overview above for more
details).

**Best_Fit_Flux_0**

The best-fit value of the reference flux parameter
S_{0}, in Jy, in the spectral fit model (see Overview above for more
details).

**Reduced_Chi_Squared**

The reduced chi-squared value of the best-fit spectral
model (see Overview above for more details).