MAGPIS: A Multi-Array Galactic Plane Imaging Survey

By D. Helfand, Robert H. Becker, R. White, Adam Fallon, S. Tuttle. 2005

254 citations recorded by the source corpus.

We present the Multi-Array Galactic Plane Imaging Survey (MAGPIS), which maps portions of the first Galactic quadrant with an angular resolution, sensitivity, and dynamic range that surpass existing radio images of the Milky Way by more than an order of magnitude. The source detection threshold at 20 cm is in the range 1-2 mJy over the 85% of the survey region (5° < l < 32°, |b| < 0.°8) not covered by bright extended emission; the angular resolution is ∼6″. We catalog over 3000 discrete sources (diameters mostly <30″) and present an atlas of ∼400 diffuse emission regions. New and archival data at 90 cm for the whole survey area are also presented. Comparison of our catalogs and images with the Midcourse Space Experiment mid-infrared data allows us to provide preliminary discrimination between thermal and nonthermal sources. We identify 49 high-probability supernova remnant candidates, increasing by a factor of 7 the number of known remnants with diameters smaller than 5′ in the survey region; several are pulsar wind nebula candidates and/or very small diameter remnants (D < 45″). We report the tentative identification of several hundred H II regions based on a comparison with the mid-IR data; they range in size from unresolved ultracompact sources to large complexes of diffuse emission on scales of half a degree. In several of the latter regions, cospatial nonthermal emission illustrates the interplay between stellar death and birth. We comment briefly on plans for follow-up observations and our extension of the survey; when complemented by data from ongoing X-ray and mid-IR observations, we expect MAGPIS to provide an important contribution to our understanding of the birth and death of massive stars in the Milky Way.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/8548e780568b7dda76cedc15c070d2cc35fa38d2

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Citations in the corpus

The Bubbling Galactic Disk. II. The Inner 20° (2007, background): “…(24, 70, and 160 m Spitzer/MIPS images of theGLIMPSE survey area; Carey et al. 2005), and MAGPIS images (20 cm VLA plus Effelsberg single-dish data; Helfand et al. 2006) to show that 24 m and 20 cm continuum emission (which describes the extent of the H ii region) are coincident; the IRAC 8 mband…”
Characterizing precursors to stellar clusters with Herschel (2011, methodology): “The Multi-Array Galactic Plane Imaging Survey (MAGPIS; Helfand et al. 2006; White et al. 2005), which provides comprehensive radio continuum maps of the first Galactic quadrant at high resolution and sensitivity, is also used in our analysis.”
ATLASGAL - The APEX telescope large area survey of the galaxy at 870 μm (2009, unknown): “…radio surveys in the centimeter range: the NRAO VLA Sky Survey (NVSS, Condon et al. 1998), the Multi-Array Galactic Plane Imaging Survey (MAGPIS, Helfand et al. 2006), the Sydney University Molonglo Sky Survey (SUMSS, Mauch et al. 2003), and the CoOrdinated Radio ‘N’ Infrared Survey for…”
A gallery of bubbles. The nature of the bubbles observed by Spitzer and what ATLASGAL tells us about the surrounding neutral material (2010, methodology): “The Multi-Array Galactic Plane Imaging Survey (MAGPIS; Helfand et al. 2006) is a 20-cm VLA continuum survey of the Galactic plane.”
The Karl G. Jansky Very Large Array Sky Survey (VLASS). Science Case and Survey Design (2019, background): “…dust obscuration and absorption effects can be significant toward the Galactic plane, but these effects are not problematic at radio wavelengths, and there is a rich history of using radio observations to find objects deep within the Galaxy (see Helfand et al. 2006, and references therein).”
THE WISE CATALOG OF GALACTIC H ii REGIONS (2013, methodology): “…is the most sensitive survey extant for extended diffuse emission and is useful for identifying large diffuse H ii regions, but MAGPIS 20 cm data (Helfand et al. 2006) boasts a higher angular resolution and point source sensitivity than the VGPS and is useful for identifying ultracompact H ii…”
EMU: Evolutionary Map of the Universe (2011, methodology): “For example, the MAGPIS (Helfand et al. 2006) and CORNISH surveys (Purcell & Hoare 2010) cover an area,100 deg2 at an angular resolution of 1–6 arcsec, while the International Galactic Plane Survey consists of a number of studies over several hundred deg2 at a typical resolution of ,1 arcmin (McClur”
The second epoch Molonglo Galactic Plane Survey: compact source catalogue (2007, methodology): “The MultiArray Galactic Plane Imaging Survey (MAGPIS; Helfand et al. 2006) is the highest resolution large scale radio survey of the Galactic plane to date.”
A revised catalogue of 294 Galactic supernova remnants (2019, methodology): “Higher resolution radio images are available from the MultiArray Galactic Plane Imaging Survey (MAGPIS, Helfand et al. 2006)2 for several of these, but none of these look like young SNRs.”
THE GREEN BANK TELESCOPE H ii REGION DISCOVERY SURVEY. II. THE SOURCE CATALOG (2011, background): “…Stil et al. 2006), the NRAO VLA Sky Survey at 20 cm continuum (NVSS: Condon et al. 1998), the Southern Galactic Plane Survey at 21 cm H I and continuum (SGPS: Haverkorn et al. 2006), the VLA MAGPIS at 20 cm continuum (Helfand et al. 2006), and the Spitzer 24µm MIPSGAL survey (Carey et al. 2009).”
A Multiwavelength Study of M17: The Spectral Energy Distribution and PAH Emission Morphology of a Massive Star Formation Region (2007, methodology): “MAGPIS Radio Continuum The MAGPIS project, described by Helfand et al. (2006) is a compilation of high-resolution images spanning the Galactic plane from the Very Large Array (VLA) and complementary IR surveys.”
A Massive Cluster of Red Supergiants at the Base of the Scutum-Crux Arm (2007, methodology): “Here we make a similar discussion of the unidentified sources near RSGC2, using the Galactic plane survey data of GLIMPSE, MIPSGAL, and MAGPIS (Benjamin et al. 2003; Carey et al. 2005; Helfand et al. 2006).”