A High Resolution Survey of the Galactic Plane at 408 MHz

Abstract

The interstellar medium is a complex 'ecosystem' with gas constituents in the atomic, molecular, and ionized states, dust, magnetic fields, and relativistic particles. The Canadian Galactic Plane Survey has imaged these constituents with angular resolution of the order of arcminutes. This paper presents radio continuum data at 408 MHz over the area 52 degrees < longitude < 193 degrees, -6.5 degrees < latitude < 8.5 degrees, with an extension to latitude = 21 degrees in the range 97 degrees < longitude < 120 degrees, with angular resolution 2.8' x 2.8' cosec(declination). Observations were made with the Synthesis Telescope at the Dominion Radio Astrophysical Observatory as part of the Canadian Galactic Plane Survey. The calibration of the survey using existing radio source catalogs is described. The accuracy of 408-MHz flux densities from the data is 6%. Information on large structures has been incorporated into the data using the single-antenna survey of Haslam (1982). The paper presents the data, describes how it can be accessed electronically, and gives examples of applications of the data to ISM research.

arXiv commentAccepted for publication in the Astronomical Journal

References in corpus (20)

• The VLA Low-frequency Sky Survey
• An Accurate Flux Density Scale from 50 MHz to 50 GHz
• Parallaxes and proper motions of interstellar masers toward the Cygnus X star-forming complex. I. Membership of the Cygnus X region
• The radio emission from the Galaxy at 22 MHz
• Integrated Polarization Properties of 3C48, 3C138, 3C147, and 3C286
• The Synthesis Telescope at the Dominion Radio Astrophysical Observatory
• A Sino-German 6 cm polarization survey of the Galactic plane II. The region from 129 degree to 230 degree longitude
• A Survey of the Polarized Emission from the Galactic Plane at 1420 MHz with Arcminute Angular Resolution
• A Sino-German 6 cm polarization survey of the Galactic plane III. The region from 10 degree to 60 degree longitude
• A CGPS Look at the Spiral Structure of the Outer Milky Way I: Distances and Velocities to Star Forming Regions
• The Supernova Remnant CTB104A : Magnetic Field Structure and Interaction with the Environment
• A Sino-German 6cm polarization survey of the Galactic plane IV. The region from 60deg to 129deg longitude
• The JCMT 12CO(3-2) Survey of the Cygnus X Region: I. A Pathfinder
• The Search for Faint Radio Supernova Remnants in the Outer Galaxy: Five New Discoveries
• G141.2+5.0, a new Pulsar Wind Nebula discovered in the Cygnus Arm of the Milky Way
• A sharper view of the outer Galaxy at 1420 and 408 MHz from the Canadian Galactic Plane Survey II: The catalogue of extended radio sources
• Two Radio Supernova Remnants Discovered in the Outer Galaxy
• Discovery of A New Faint Radio SNR G108.2-0.6
• Star Formation in the Gulf of Mexico
• The enormous outer Galaxy HII region CTB 102

Cited by in corpus (10)

• COMAP Early Science: VI. A First Look at the COMAP Galactic Plane Survey
• Revisiting Rotation Measures from the Canadian Galactic Plane Survey: the Magnetic Field in the Disk of the Outer Galaxy
• A Radio Continuum and Polarisation Study of the pulsar wind nebula CTB87 (G74.9+1.2)
• Bow shocks, bow waves, and dust waves. III. Diagnostics
• A polarization study of the supernova remnant CTB 80
• Constraining the Anomalous Microwave Emission Mechanism in the S140 Star Forming Region with Spectroscopic Observations Between 4 and 8 GHz at the Green Bank Telescope
• A pioneering experiment combining single-antenna and aperture-synthesis data to measure Faraday rotation with GMIMS and the CGPS
• New Radio Observations of the Supernova Remnant CTA 1
• An Overview of CHIME, the Canadian Hydrogen Intensity Mapping Experiment
• Radio properties of the optically identified supernova remnant G107.0+9.0