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GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey II: Galactic plane 345° < l < 67°, 180° < l < 240°

  • N. Hurley-Walker (a1), P. J. Hancock (a1), T. M. O. Franzen (a2), J. R. Callingham (a2), A. R. Offringa (a2), L. Hindson (a3), C. Wu (a4), M. E. Bell (a5), B.-Q. For (a4) (a6), B. M. Gaensler (a6) (a7), M. Johnston-Hollitt (a1), A. D. Kapińska (a8), J. Morgan (a1), T. Murphy (a9), B. McKinley (a1), P. Procopio (a10), L. Staveley-Smith (a4) (a6), R. B. Wayth (a1) and Q. Zheng (a11)...

Abstract

This work makes available a further $2\,860~\text{deg}^2$ of the GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey, covering half of the accessible galactic plane, across 20 frequency bands sampling 72–231 MHz, with resolution $4\,\text{arcmin}-2\,\text{arcmin}$ . Unlike previous GLEAM data releases, we used multi-scale CLEAN to better deconvolve large-scale galactic structure. For the galactic longitude ranges $345^\circ < l < 67^\circ$ , $180^\circ < l < 240^\circ$ , we provide a compact source catalogue of 22 037 components selected from a 60-MHz bandwidth image centred at 200 MHz, with RMS noise $\approx10-20\,\text{mJy}\,\text{beam}^{-1}$ and position accuracy better than 2 arcsec. The catalogue has a completeness of 50% at ${\approx}120\,\text{mJy}$ , and a reliability of 99.86%. It covers galactic latitudes $1^\circ\leq|b|\leq10^\circ$ towards the galactic centre and $|b|\leq10^\circ$ for other regions, and is available from Vizier; images covering $|b|\leq10^\circ$ for all longitudes are made available on the GLEAM Virtual Observatory (VO).server and SkyView.

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Corresponding author

Author for correspondence: N. Hurley-Walker, E-mail: nhw@icrar.org

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Keywords

GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey II: Galactic plane 345° < l < 67°, 180° < l < 240°

  • N. Hurley-Walker (a1), P. J. Hancock (a1), T. M. O. Franzen (a2), J. R. Callingham (a2), A. R. Offringa (a2), L. Hindson (a3), C. Wu (a4), M. E. Bell (a5), B.-Q. For (a4) (a6), B. M. Gaensler (a6) (a7), M. Johnston-Hollitt (a1), A. D. Kapińska (a8), J. Morgan (a1), T. Murphy (a9), B. McKinley (a1), P. Procopio (a10), L. Staveley-Smith (a4) (a6), R. B. Wayth (a1) and Q. Zheng (a11)...

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