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GaLactic and Extragalactic All-sky Murchison Widefield Array (GLEAM) survey II: Galactic Plane $345^\circ < l < 67^\circ$, $180^\circ < l < 240^\circ$

Published 19 Nov 2019 in astro-ph.GA and astro-ph.IM | (1911.08127v1)

Abstract: This work makes available a further 2,860deg$2$ of the GLEAM survey, covering half of the accessible Galactic Plane, across twenty frequency bands sampling $72-231$MHz, with resolution $4'-2'$. 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 $\approx10-20$mJy beam${-1}$ and position accuracy better than $2"$. The catalogue has a completeness of 50% at $\approx120$mJy, and a reliability of 99.86%. It covers Galactic latitudes $1\circ\leq|b|\leq10\circ$ toward 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 VO server and SkyView.

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