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J/A+A/611/A94      6 galaxy clusters ATCA 2.1GHz images (Martinez Aviles+, 2018)

ATCA observations of the MACS-Planck Radio Halo Cluster Project. II. Radio observations of an intermediate redshift cluster sample. Martinez Aviles G., Johnston-Hollitt M., Ferrari C., Venturi T., Democles J., Dallacasa D., Cassano R., Brunetti G., Giacintucci S., Pratt G.W., Arnaud M., Aghanim N., Brown S., Douspis M., Hurier G., Intema H.T., Langer M., Macario G., Pointecouteau E. <Astron. Astrophys. 611, A94 (2018)> =2018A&A...611A..94M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, galaxy ; Radio sources Keywords: galaxies: clusters: general - galaxies: clusters: intracluster medium - radiation mechanisms: non-thermal - radio: continuum: galaxies Abstract: A fraction of galaxy clusters host diffuse radio sources whose origins are investigated through multi-wavelength studies of cluster samples. We investigate the presence of diffuse radio emission in a sample of seven galaxy clusters in the largely unexplored intermediate redshift range (0.3<z<0.44). In search of diffuse emission, deep radio imaging of the clusters are presented from wide band (1.1-3.1GHz), full resolution (∼5-arcsec) observations with the Australia Telescope Compact Array (ATCA). The visibilities were also imaged at lower resolution after point source modelling and subtraction and after a taper was applied to achieve better sensitivity to low surface brightness diffuse radio emission. In case of non-detection of diffuse sources, we set upper limits for the radio power of injected diffuse radio sources in the field of our observations. Furthermore, we discuss the dynamical state of the observed clusters based on an X-ray morphological analysis with XMM-Newton. We detect a giant radio halo in PSZ2 G284.97-23.69 (z=0.39) and a possible diffuse source in the nearly relaxed cluster PSZ2 G262.73-40.92 (z=0.421). Our sample contains three highly disturbed massive clusters without clear traces of diffuse emission at the observed frequencies. We were able to inject modelled radio halos with low values of total flux density to set upper detection limits; however, with our high-frequency observations we cannot exclude the presence of RH in these systems because of the sensitivity of our observations in combination with the high z of the observed clusters. Description: The ATCA sample of Galaxy Clusters at 2.1GHz, 2000MHz bandwidth. Radio observations of the ATCA sample were carried out with three separate array configurations for each observed cluster using the Compact Array Broadband Backend (CABB) correlator with a central frequency of 2.1GHz and spanning 1.1-3.1GHz (project ID C2679). Observations were carried out in continuum mode with the correlator set to produce 2000x1MHz channels. We are waiting for image of PSZ2 G284.97-23.69 (PLCK G285.0-3.7), associated to Paper I (Martinez Aviles et al., 2016A&A...595A.116M) that should be sent by the authors. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 144 7 Information concerning the clusters of the MACS-Planck RHCP ATCA sample list.dat 118 6 List of fits images fits/* 0 6 Individual fits images
See also: J/A+A/594/A27 : Planck Sunyaev-Zeldovich sources (PSZ2) (Planck+, 2016) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 18 A18 --- Name Cluster name 20- 92 A73 --- ONames Other names 94- 95 I2 h RAh Right ascension (J2000) (1) 97- 98 I2 min RAm Right ascension (J2000) (1) 100-104 F5.2 s RAs Right ascension (J2000) (1) 106 A1 --- DE- Declination sign (J2000) (1) 107-108 I2 deg DEd Declination (J2000) (1) 110-111 I2 arcmin DEm Declination (J2000) (1) 113-117 F5.2 arcsec DEs Declination (J2000) (1) 119-122 F4.2 10+14Msun Mass ?=- Planck cluster mass (2) 124-127 F4.2 10+14Msun e_Mass ?=- rms uncertainty on Mass 129-133 F5.2 10+37W L500 ?=- X-ray cluster luminosity (2) 135-138 F4.2 10+37W e_L500 ?=- rms uncertainty on L500 140-144 F5.3 --- z Redshift (2)
Note (1): Position for centring the ATCA observations. Note (2): From Planck Collaboration et al. (2016, Cat. J/A+A/594/A27).
Byte-by-byte Description of file: list.dat
Bytes Format Units Label Explanations
1- 9 F9.5 deg RAdeg Right Ascension of center (J2000) 10- 18 F9.5 deg DEdeg Declination of center (J2000) 20- 23 I4 --- Nx Number of pixels along X-axis 25- 28 I4 --- Ny Number of pixels along Y-axis 30- 50 A21 --- Obs.Date Observation date (YYYY-MM-DDThh:mm:ss.s) 52- 58 F7.5 GHz Freq Observed frequency 60- 65 I6 Kibyte size Size of FITS file 67- 89 A23 --- FileName Name of FITS file, in subdirectory fits 91-118 A28 --- Title Title of the FITS file
Acknowledgements: Gerardo Martinez Aviles, gerardo.martinez.aviles(at) References: Martinez Aviles et al., Paper I 2016A&A...595A.116M
(End) Patricia Vannier [CDS] 13-Mar-2018
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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