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J/A+A/597/A41       ALMA Frontier Fields Survey. I.      (Gonzalez-Lopez+, 2017)

The ALMA Frontier Fields Survey. I. 1.1 mm continuum detections in Abell 2744, MACS J0416.1-2403 and MACS J1149.5+2223. Gonzalez-Lopez J., Bauer F.E., Romero-Canizales C., Kneissl R., Villard E., Carvajal R., Kim S., Laporte N., Anguita T., Aravena M., Bouwens R.J., Bradley L., Carrasco M., Demarco R., Ford H., Ibar E., Infante L., Messias H., Munoz Arancibia A. M., Nagar N., Padilla N., Treister E., Troncoso P., Zitrin A. <Astron. Astrophys. 597, A41 (2017)> =2017A&A...597A..41G (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, radio ; Interferometry ; Radio continuum Keywords: gravitational lensing: strong - galaxies: high-redshift - submillimeter: galaxies Abstract: Dusty star-forming galaxies are among the most prodigious systems at high redshift (z>1), characterized by high star-formation rates and huge dust reservoirs. The bright end of this population has been well characterized in recent years, but considerable uncertainties remain for fainter dusty star-forming galaxies, which are responsible for the bulk of star formation at high redshift and thus play a key role in galaxy growth and evolution. In this first paper of our series, we describe our methods for finding high redshift faint dusty galaxies using millimeter observations with ALMA. We obtained ALMA 1.1mm mosaic images for three strong-lensing galaxy clusters from the Frontier Fields Survey, which constitute some of the best studied gravitational lenses to date. The ∼2'x2' mosaics overlap with the deep HST WFC3/IR footprints and encompass the high magnification regions of each cluster for maximum intrinsic source sensitivity. The combination of extremely high ALMA sensitivity and the magnification power of these clusters allows us to systematically probe the sub-mJy population of dusty star-forming galaxies over a large surveyed area. We present a description of the reduction and analysis of the ALMA continuum observations for the galaxy clusters Abell 2744 (z=0.308), MACS J0416.1-2403 (z=0.396) and MACS J1149.5+2223 (z=0.543), for which we reach observed rms sensitivities of 55, 59 and 71uJy/beam respectively. We detect 12 dusty star-forming galaxies at S/N≥5.0 across the three clusters, all of them presenting coincidence with near-infrared detected counterparts in the HST images. None of the sources fall close to the lensing caustics, thus they are not strongly lensed. The observed 1.1mm flux densities for the total sample of galaxies range from 0.41 to 2.82mJy, with observed effective radii spanning ≲0.05" to 0.37"±0.21". The lensing-corrected sizes of the detected sources appear to be in the same range as those measured in brighter samples, albeit with possibly larger dispersion. Description: Tables presenting detection properties of mm sources behind the 3 Frontier Fields Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223. We present the properties of the detected sources in the ALMA observations. We also present the intrinsic properties of the sources in the image plane as well as the separations to the optical counterpart. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 68 12 ALMA detections table4.dat 60 12 Flux density estimates table5.dat 94 12 Source parameters and magnification properties table6.dat 76 12 Counterpart galaxies separation properties list.dat 145 6 List of fitsd images fits/* 0 6 Individual fits images
See also: J/MNRAS/443/1549 : MACSJ0416.1-2403 strong-lensing analysis (Jauzac+, 2014) J/MNRAS/444/268 : HST Frontier Fields clusters (Richard+, 2014) J/ApJS/211/21 : Spectroscopic redshifts of galaxies in MACS (Ebeling+, 2014) J/ApJ/800/18 : HST/WFC3 obs. of z∼7-8 galaxies in A2744 (Atek+, 2015) J/ApJ/811/29 : GLASS. IV. Lensing cluster Abell 2744 (Wang+, 2015) J/MNRAS/452/1437 : Abell 2744 strong-lensing analysis (Jauzac+, 2015) J/ApJS/224/33 : CLASH-VLT: the FF cluster MACSJ0416.1-2403 (Balestra+, 2016) J/A+A/590/A31 : ASTRODEEP Frontier Fields Catalogues (Merlin+, 2016) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 14 A14 --- ID Source ID (Cluster-IDNN) 16- 17 I2 h RAh Centroid right ascension (J2000) 19- 20 I2 min RAm Centroid right ascension (J2000) 22- 26 F5.2 s RAs Centroid right ascension (J2000) 28 A1 --- DE- Centroid declination sign (J2000) 29- 30 I2 deg DEd Centroid declination sign (J2000) 32- 33 I2 arcmin DEm Centroid declination sign (J2000) 35- 39 F5.2 arcsec DEs Centroid declination sign (J2000) 41- 45 F5.3 arcsec e_RAs Positional error of RA 47- 51 F5.3 arcsec e_DEs Positional error of DE 53- 56 F4.1 --- SN Detection signal-to-noise 58- 62 F5.3 mJy/beam Speak Peak intensity per beam at 1.1mm 64- 68 F5.3 mJy/beam e_Speak 1 sigma error of peak intensity
Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 14 A14 --- ID Source ID (Cluster-IDNN) 16- 20 F5.3 mJy FPs Integrated flux density at 1.1mm assuming a PS model 22- 26 F5.3 mJy e_FPs 1 sigma error of FPs 28- 32 F5.3 mJy FExt Integrated flux density at 1.1mm assuming a 6-parameter extended Gaussian model (EXT) 34- 38 F5.3 mJy e_FExt 1 sigma error of FExt 40- 43 F4.1 --- Chi2Ps Reduced chi2/DOF for PS model 45- 48 F4.1 --- Chi2Ext Reduced chi2/DOF for EXT model 50- 54 F5.3 mJy FuvFit Integrated flux density at 1.1mm using UV-FIT 56- 60 F5.3 mJy e_FuvFit 1 sigma error of FuvFit
Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 14 A14 --- ID Source ID (Cluster-IDNN) 16- 19 F4.2 arcsec rs Effective radius 21- 24 F4.2 arcsec e_rs Effective radius error 26- 29 F4.2 --- q The axial ratio 31- 34 F4.2 --- e_q The axial ratio error 36- 38 I3 deg phi The position angle in degrees east of north 40- 41 I2 deg e_phi The position angle error 43- 45 F3.1 --- mu Magnification value 48- 50 F3.1 --- E_mu Magnification value positive error 53- 55 F3.1 --- e_mu Magnification value negative error 57- 60 F4.2 arcsec rsmu Demagnified effective radius 63- 66 F4.2 arcsec E_rsmu Demagnified effective radius positive error 69- 72 F4.2 arcsec e_rsmu Demagnified effective radius negative error 74- 78 F5.3 mJy Fuvmu Demagnified flux density 81- 85 F5.3 mJy E_Fuvmu Demagnified flux density positive error 88- 92 F5.3 mJy e_Fuvmu Demagnified flux density negative error 94 I1 --- Ext [0/2] Extended emission classification (1)
Note (1): Extended emission classification as follows: 0 = point-like 1 = marginally extended 2 = significantly extended.
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 14 A14 --- ID Source ID (Cluster-IDNN) 16- 17 I2 h RAh Centroid right ascension for NIR counterpart (J2000) 19- 20 I2 min RAm Centroid right ascension for NIR counterpart (J2000) 22- 28 F7.4 s RAs Centroid right ascension for NIR counterpart (J2000) 30 A1 --- DE- Centroid declination sign for NIR counterpart (J2000) 31- 32 I2 deg DEd Centroid declination for NIR counterpart (J2000) 34- 35 I2 arcmin DEm Centroid declination for NIR counterpart (J2000) 37- 43 F7.4 arcsec DEs Centroid declination for NIR counterpart (J2000) 45- 49 F5.3 arcsec e_RAs Positional error of RA for NIR counterpart 52- 56 F5.3 arcsec e_DEs Positional error of DEC for NIR counterpart 58- 61 F4.2 arcsec Ipoff Offset measured in the image plane 63- 66 F4.2 arcsec e_Ipoff Offset measured in the image plane error 68- 71 F4.2 arcsec Spoff Offset measured in the source plane error 73- 76 F4.2 arcsec e_Spoff Offset measured in the source plane error
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- 55 A26 --- Obs.Date Observation date (YYYY-MM-DDThh:mm:ss.ssssss) 57- 63 F7.3 GHz Freq Observed frequency 65- 69 I5 Kibyte size Size of FITS file 71-103 A33 --- FileName Name of FITS file, in subdirectory fits 105-145 A41 --- Title Title of the FITS file
Acknowledgements: Jorge Gonzalez Lopez, jgonzal(at)astro.puc.cl
(End) Jorge Gonzalez Lopez [PUC], Patricia Vannier [CDS] 31-Oct-2016
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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