The second epoch Molonglo Galactic Plane Survey: compact source catalogue

Abstract

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° and 245° < l < 365°, and is the Galactic counterpart to the Sydney University Molonglo Sky Survey (SUMSS) which covers the whole southern sky with δ≤−30° (|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.

Accurate classification of 17 AGNs detected with Swift/BAT

“…The B magnitudes and the redshifts of the objects mentioned below, if not otherwise stated, are extracted from the LEDA archive (Prugniel et al 2005). Moreover, for each source we list X-ray, radio and Infrared counterparts in the ROSAT all sky survey bright source Catalog (Voges et al 1999), RXTE slew survey (Revnivtsev et al 2004), XMM-Newton serendipitous survey (Watson et al 2009), NVSS radio Catalog (Condon et al 1998), SUMSS Catalog (Mauch et al 2003), MGPS-2 catalog (Murphy et al 2007) and IRAS point source Catalog (IRAS 1988).…”

The Half Million Quasars (HMQ) Catalogue

“…The ReadMe itemises 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 Murphy et al (2007) for the radio data, and Chandra, XMM-Newton, Swift, and ROSAT catalogues for the X-ray data. Optical field solutions are calculated from the raw source positions of all these catalogues as described in Flesch (2010).…”

Molecular gas and star formation toward the IR dust bubble S 24 and its environs

“…We used radio continuum images at 843 MHz from the Molonglo Galactic Plane Survey (MGPS2, Murphy et al 2007) with a synthesized beam of 65 × 45 , and at 1.4 GHz from the Southern Galactic Plane Survey (Haverkorn et al 2006; beam size = 1. 7).…”

“…S 24 is detected as a radio continuum source in the Molonglo Galactic Plane Survey at 843 MHz (MGPSJ165220-442802, Murphy et al 2007; synthesized beam = 65 × 45 ) with an integrated flux density S 0.843 = 0.92 ± 0.04 Jy. Bronfman et al (1996) performed CS(2−1) line observations with an angular resolution of 50 using the SEST telescope.…”