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GaLactic and Extragalactic All-sky Murchison Widefield Array eXtended (GLEAM-X) survey II: Second Data Release

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In process
Authors
Ross, Kat
Hurley-Walker, Natasha
Galvin, T.J.
Venville, B.
Duchesne, S.W.
Morgan, John
An, T.
Gürkan, G.
Hancock, Paul
Heald, G.
Johnston-Hollitt, Melanie
White, S.V.
Date
2024
Type
Journal Article

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Citation
Ross, K. and Hurley-Walker, N. and Galvin, T.J. and Venville, B. and Duchesne, S.W. and Morgan, J. and An, T. et al. 2024. GaLactic and Extragalactic All-sky Murchison Widefield Array eXtended (GLEAM-X) survey II: Second Data Release. Publications of the Astronomical Society of Australia. 41.
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Publications of the Astronomical Society of Australia
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Faculty
Faculty of Science and Engineering
Faculty of Science and Engineering
Faculty of Science and Engineering
Faculty of Science and Engineering
Faculty of Science and Engineering
School
School of Elec Eng, Comp and Math Sci (EECMS)
School of Elec Eng, Comp and Math Sci (EECMS)
School of Elec Eng, Comp and Math Sci (EECMS)
Curtin Institute for Data Science (CIDS)
Curtin Institute for Data Science (CIDS)
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Abstract

We present the second data release for the GaLactic and Extragalactic All-sky Murchison Widefield Array eXtended (GLEAM-X) survey. This data release is an area of 12 892-deg around the South Galactic Pole region covering 20 h40 m RA 6 h40 m, -90 Dec +30. Observations were taken in 2020 using the Phase-II configuration of the Murchison Widefield Array (MWA) and covering a frequency range of 72-231 MHz with twenty frequency bands. We produce a wideband source finding mosaic over 170-231 MHz with a median root-mean-squared noise of mJy beam. We present a catalogue of 624 866 components, including 562 302 components which are spectrally fit. This catalogue is 98% complete at 50 mJy, and a reliability of 98.7% at a 5 level, consistent with expectations for this survey. The catalogue is made available via Vizier, and the PASA datastore and accompanying mosaics for this data release are made available via AAO Data Central and SkyView.