J/other/PASA/42.158 GLEAM-300 (Duchesne+, 2025)
GLEAM-300: The GaLactic and Extragalactic All-sky Murchison Widefield Array
(GLEAM) survey at 300 MHz.
Duchesne S., Cook J.H., Hurley-Walker N., Thomson A.J.M., Paterson S.,
Riseley C.J., McSweeney S.J., Mantovanini S., Heald G., Franzen T.M.O.,
Ross K., Seymour N., Wayth R.B., Galvin T.J.
<Publ. Astron. Soc. Australia, 42, 158 (2025)>
=2025PASA...42..158D 2025PASA...42..158D (SIMBAD/NED BibCode)
ADC_Keywords: Surveys ; Radio sources ; Galaxy catalogs ; Morphology
Keywords: techniques: interferometric - galaxies: general -
radio continuum: general - surveys
Abstract:
We present a wide-field radio survey at 300MHz covering the sky from
-90 degrees to +40 degrees in declination using the Murchison
Widefield Array (MWA). This 300-MHz survey follows the Galactic and
Extragalactic All-sky MWA (GLEAM) survey, and provides an additional
comparatively high-frequency data point to existing multi-frequency
(72-231MHz) data. With this data release we provide mosaic images and
a catalogue of compact source components. We use two-minute snapshot
observations covering 2015 to 2016, combining overlapping two-minute
snapshot images to provide full-sensitivity mosaic images with a
median root-mean-square noise of 9.1+5.5-2.8mJy/beam and median
angular resolution of 128.8"x112.5", with some position-dependent
variation. We find a total of 338080 unique Gaussian components across
the mosaic images. The survey is the first at 300MHz from the MWA
covering the whole Southern Hemisphere. It provides a unique spectral
data point that complements the existing GLEAM survey and the ongoing
GLEAM-eXtended survey, and points toward results from the upcoming
SKA-Low surveys.
Description:
The GLEAM-300 catalogue is constructed by running the Aegean source
finder (2012ascl.soft12009H) on individual mosaics and merging the
resultant source lists.The merging process removes duplicate
measurements in overlap regions to return a final catalogue of unique
radio components.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
gleam300.dat 203 338080 GLEAM-300 catalogue
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See also:
VIII/100 : GaLactic and Extragalactic All-sky MWA survey
(Hurley-Walker+, 2016)
VIII/102 : GLEAM II. Galactic plane (Hurley-Walker+, 2019)
VIII/105 : The GLEAM 4-Jy (G4Jy) Sample (White+, 2020)
VIII/109 : GLEAM III. South Galactic Pole (Franzen+, 2021)
VIII/110 : GLEAM-X Data Release 1 (Hurley-Walker+, 2022)
VIII/113 : GLEAM-X Data Release 2 (Ross+, 2024)
J/other/PASA/38.41 : GLEAM 200MHz local radio luminosity function
(Franzen+, 2021)
J/other/PASA/42.137 : GLEAM-X. Galactic plane (Mantovanini+, 2026)
https://doi.org/10.25919/z80f-5t62 : catalogue and mosaic images
Byte-by-byte Description of file: gleam300.dat
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Bytes Format Units Label Explanations
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1- 24 A24 --- Name Component name following IAU convention,
GLEAM-300 JHHMMSS±DDMMSS (name)
26- 35 F10.6 deg RAdeg Right ascension (J2000) of the component
(RAJ2000)
37- 44 F8.6 deg e_RAdeg Uncertainty on right ascension from
fitting the component (err_RAJ2000)
46- 55 F10.6 deg DEdeg Declination (J2000) of the component
(DEJ2000)
57- 64 F8.6 deg e_DEdeg Uncertainty on declination from fitting
the component (err_DEJ2000)
66- 72 F7.4 Jy/beam localrms Local estimate of the root- mean-square
noise (local_rms)
74- 80 F7.4 Jy/beam background Local estimate of the background
(background)
82- 95 F14.9 Jy/beam Fpeak Peak flux density at 300MHz of the
component (peak_flux)
97-103 F7.5 Jy/beam e_Fpeak Uncertainty in the peak flux density
(errpeakflux)
105-118 F14.9 Jy Fint Integrated flux density at 300MHz of the
component (int_flux)
120-127 F8.5 Jy e_Fint Uncertainty in the integrated flux
density of the component (errintflux)
129-135 F7.2 arcsec amaj FWHM of the major axis of the component
(a)
137-143 F7.2 arcsec e_amaj Uncertainty in the FWHM of the major axis
(err_a)
145-151 F7.2 arcsec bmin FWHM of the minor axis of the component
(b)
153-159 F7.2 arcsec e_bmin Uncertainty in the FWHM of the minor axis
(err_b)
161-167 F7.3 deg PA [] Position angle of the component (pa)
169-175 F7.3 deg e_PA Uncertainty in the position angle
(err_pa)
177-183 F7.3 arcsec bamaj Local major axis of the beam (bmaj)
185-189 F5.1 arcsec bbmin Local minor axis of the beam (bmin)
191-196 F6.2 deg bPA Local position angle of the beam (bpa)
198 I1 --- Flags Aegean fitting flags (flags)
200-203 F4.2 --- FluxScaleErr Flux density scale uncertainty
(fluxscaleerr)
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Acknowledgements:
Stefan Duchesne, stefan.duchesne(at)csiro.au
References:
Wayth et al., 2015PASA...32...25W 2015PASA...32...25W
Hurley-Walker et al., 2017MNRAS.464.1146H 2017MNRAS.464.1146H, Cat. VIII/100
(End) Patricia Vannier [CDS] 19-Feb-2026