The second epoch Molonglo Galactic Plane Survey: compact source catalogue

By T. Murphy, T. Mauch, A. Green, R. Hunstead, B. Piestrzynska, A. P. Kels, P. Sztajer. 2007

178 citations recorded by the source corpus.

We present the first data release from the second epoch Molonglo Galactic Plane Survey (MGPS-2). MGPS-2 was carried out with the Molonglo Observatory Synthesis Telescope at a frequency of 843 MHz and with a restoring beam of 45 × 45 arcsec2, making it the highest resolution large-scale radio survey of the southern Galactic plane. It covers the range |b| 10°). In this paper, we present the MGPS-2 compact source catalogue. The catalogue has 48 850 sources above a limiting peak brightness of 10 mJy beam−1. Positions in the catalogue are accurate to 1–2 arcsec. A full catalogue including extended sources is in preparation. We have carried out an analysis of the compact source density across the Galactic plane and find that the source density is not statistically higher than the density expected from the extragalactic source density alone. We also present version 2.0 of the SUMSS image data and catalogue which is now available online. The data consist of 629 4.3° × 4.3° mosaic images covering the 8100 deg2 of sky with δ ≤ −30° and |b| > 10°. The catalogue contains 210 412 radio sources to a limiting peak brightness of 6 mJy beam−1 at δ ≤ −50° and 10 mJy beam−1 at δ > −50°. We describe the updates and improvements made to the SUMSS cataloguing process.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/bb4f8f95ecd8b370924ae1817d0302b624c5c5a1

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In Astronomy and Astrophysics

1. D. M. Alexander
2. R. Ivison
3. I. Smail
4. L. Hernquist
5. P. Padovani
6. R. Dav'e
7. D. Narayanan
8. A. Koekemoer

In Nuclear and High Energy Physics

1. P. Padovani
2. D. M. Alexander
3. I. Smail
4. R. Ivison
5. E. Sadler
6. H. Intema
7. Heinz Andernach
8. D. Frail

Citations in the corpus

• Radio and millimeter continuum surveys and their astrophysical implications (2009, methodology): “The survey was completed in 2007 with the Molonglo Galactic Plane Survey (MGPS; Murphy et al. 2007), and now covers the whole sky south of declination −30◦.”
• EMU: Evolutionary Map of the Universe (2011, methodology): “…survey (White et al. 1997)), a machine-learning back-end to VSAD, used to construct the SUMSS catalogue (Mauch et al. 2003), BDSM (used for the LOFAR source-finding, N. Mohan, in prep), and the flood-fill algorithm being used in the ATLAS Data Release 2 (Murphy et al. 2007; Hales et al. 2011).”
• The Australia Telescope 20 GHz Survey: the source catalogue (2009, methodology): “To test whether the AT20G survey has found any new radio–source population not seen at lower frequency, we cross-matched th AT20G catalogue with the 1.4 GHz NVSS (Condon et al. 1998) and 843 MHz SUMSS (Mauch et al. 2003) and MGPS-2 (Murphy et al. 2007) surveys, which together cover the whole AT20G s”
• The GMRT 150 MHz all-sky radio survey - First alternative data release TGSS ADR1 (2016, background): “…low-frequency radio catalogs, namely NVSS at 1400 MHz (Condon et al. 1998), WENSS at 327 MHz (Rengelink et al. 1997), WISH at 352 MHz (De Breuck et al. 2002), VLSSr at 74 MHz (Cohen et al. 2007; Lane et al. 2012, 2014), and SUMSS and MGPS-2 at 843 MHz (Mauch et al. 2003; Murphy et al. 2007).”
• A revised catalogue of 294 Galactic supernova remnants (2019, background): “Each of these sources have integrated flux densities of about 3.8 Jy in the NVSS catalogue, and other observations (e.g. Murphy et al. 2007) show they have relatively flat radio spectra.”
• The Half Million Quasars (HMQ) Catalogue (2015, background): “The ReadMe itemizes the radio/X-ray surveys used, but of course they are all the largest ones like the NRAO VLA Sky Survey catalog (NVSS: Condon et al. 1998), the Faint Images of the Radio Sky at Twenty-cm survey catalog (FIRST: White et al. 1997), and the Sydney University Molonglo Sky Survey (Murp”
• The Rapid ASKAP Continuum Survey I: Design and first results (2020, background): “…Lenc et al. 2018), TIFR GMRT Sky Survey (TGSS-ADR1; Intema et al. 2017), NRAOVLA Sky Survey (NVSS; Condon et al. 1998), Sydney University Molonglo Sky Survey (SUMSS; Mauch et al. 2003), Molonglo Galactic Plane Survey (MGPS-2; Murphy et al. 2007), and the VLA Sky Survey (VLASS; Lacy et al. 2020).”