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J/MNRAS/474/5049     Low-frequency study of 3C 31 with LOFAR    (Heesen+, 2018)

LOFAR reveals the giant: a low-frequency radio continuum study of the outflow in the nearby FR I radio galaxy 3C 31. Heesen V., Croston J.H., Morganti R., Hardcastle M.J., Stewart A.J., Best P.N., Broderick J.W., Brueggen M., Brunetti G., Chyzy K.T., Harwood J.J., Haverkorn M., Hess K.M., Intema H.T., Jamrozy M., Kunert-Bajraszewska M., McKean J.P., Orru E., Roettgering H.J.A., Shimwell T.W., Shulevski A., White G.J., Wilcots E.M., Williams W.L. <Mon. Not. R. Astron. Soc. 474, 5049 (2018)> =2018MNRAS.474.5049H (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, nearby ; Galaxies, radio ; Energy distributions Keywords: radiation mechanisms: non-thermal - cosmic rays - galaxies: active - galaxies: individual: 3C 31 - radio continuum: galaxies Abstract: We present a deep, low-frequency radio continuum study of the nearby Fanaroff-Riley class I (FR I) radio galaxy 3C 31 using a combination of LOw Frequency ARray (LOFAR; 30-85 and 115-178MHz), Very Large Array (VLA; 290-420MHz), Westerbork Synthesis Radio Telescope (WSRT; 609MHz) and Giant Metre Radio Telescope (GMRT; 615MHz) observations. Description: We present maps with LOFAR Low-Band Antenna (LBA) at 52MHz, LOFAR High-Band Antenna (HBA) at 145MHz, VLA P-band at 360MHz, and GMRT at 615MHz. These maps are presented at their native resolution using robust weighting. We also present LBA, HBA, and VLA maps at matched (u,v) coverage between 0.04 and 4.9 klambda. For completeness, we present again the WSRT map of Strom et al. (1983A&A...122..305S) at 609MHz, at approximately matched (u,v) coverage. For the VLA, we present one further map only from B- and C-configuration at 360MHz. Objects: ------------------------------------------- RA (2000) DE Designation(s) ------------------------------------------- 01 07 24.959 +32 24 45.21 3C 31 = NGC 383 ------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file fluxdens.dat 67 36 3C 31 flux densities list.dat 142 8 List of fits images fits/* 0 8 Individual fits images
Byte-by-byte Description of file: fluxdens.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh [01] Right Ascension (J2000) 4- 5 I2 min RAm [07] Right Ascension (J2000) 7- 12 F6.3 s RAs [24.959] Right Ascension (J2000) 14 A1 --- DE- [+] Declination sign (J2000) 15- 16 I2 deg DEd [32] Declination (J2000) 18- 19 I2 arcmin DEm [24] Declination (J2000) 21- 25 F5.2 arcsec DEs [45.21] Declination (J2000) 27- 36 F10.7 deg RAdeg [16.8539946] Right Ascension (J2000) 38- 47 F10.7 deg DEdeg [32.4125594] Declination (J2000) 49- 52 A4 --- ID [3C31] Object identifier 54- 58 F5.1 MHz nu [33.9/608.5] Observing frequency 60- 63 F4.1 Jy Snu Integrated flux density 65- 67 F3.1 Jy e_Snu Error of the integrated flux density
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 --- Observation date (YYYY-MM-DDThh:mm:ss.ssssss) 57- 64 F8.4 MHz Freq Observed frequency 66- 70 I5 Kibyte size Size of FITS file 72-104 A33 --- FileName Name of FITS file, in subdirectory fits 106-142 A37 --- Title Title of the FITS file
Acknowledgements: Volker Heesen, volker.heesen(at)
(End) Patricia Vannier [CDS] 26-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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