A search for young Galactic supernova remnants

Zdenka Misanovic; Lawrence Cram; Anne Green

doi:10.1046/j.1365-8711.2002.05602.x

A search for young Galactic supernova remnants

Zdenka Misanovic, Lawrence Cram, Anne Green

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A sample of eight small-diameter radio sources has been selected from the Molonglo Galactic Plane Survey (MGPS) as candidates for young Galactic supernova remnants. The sources have been identified in the IRAS and Midcourse Space Experiment infrared data bases and imaged in the H107α radio recombination line (RRL) using the Australia Telescope Compact Array (ATCA). Seven of the sources display high ratios of infrared-to-radio-continuum flux density and/or detectable RRLs and are almost certainly H II regions. One source (G282.8-1.2) is identified as a possible new young Galactic supernova remnant, based on its relatively weak infrared emission, steep radio spectrum, and possible X-ray emission. The adopted method for distinguishing thermal and non-thermal Galactic radio sources seems promising and could be fruitfully applied to more than 100 small-diameter sources listed in the MGPS.

Original language	English
Pages (from-to)	114-124
Number of pages	11
Journal	Monthly Notices of the Royal Astronomical Society
Volume	335
Issue number	1
DOIs	https://doi.org/10.1046/j.1365-8711.2002.05602.x
Publication status	Published - 1 Sept 2002
Externally published	Yes

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10.1046/j.1365-8711.2002.05602.x

Cite this

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title = "A search for young Galactic supernova remnants",

abstract = "A sample of eight small-diameter radio sources has been selected from the Molonglo Galactic Plane Survey (MGPS) as candidates for young Galactic supernova remnants. The sources have been identified in the IRAS and Midcourse Space Experiment infrared data bases and imaged in the H107α radio recombination line (RRL) using the Australia Telescope Compact Array (ATCA). Seven of the sources display high ratios of infrared-to-radio-continuum flux density and/or detectable RRLs and are almost certainly H II regions. One source (G282.8-1.2) is identified as a possible new young Galactic supernova remnant, based on its relatively weak infrared emission, steep radio spectrum, and possible X-ray emission. The adopted method for distinguishing thermal and non-thermal Galactic radio sources seems promising and could be fruitfully applied to more than 100 small-diameter sources listed in the MGPS.",

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T1 - A search for young Galactic supernova remnants

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AU - Cram, Lawrence

AU - Green, Anne

PY - 2002/9/1

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AB - A sample of eight small-diameter radio sources has been selected from the Molonglo Galactic Plane Survey (MGPS) as candidates for young Galactic supernova remnants. The sources have been identified in the IRAS and Midcourse Space Experiment infrared data bases and imaged in the H107α radio recombination line (RRL) using the Australia Telescope Compact Array (ATCA). Seven of the sources display high ratios of infrared-to-radio-continuum flux density and/or detectable RRLs and are almost certainly H II regions. One source (G282.8-1.2) is identified as a possible new young Galactic supernova remnant, based on its relatively weak infrared emission, steep radio spectrum, and possible X-ray emission. The adopted method for distinguishing thermal and non-thermal Galactic radio sources seems promising and could be fruitfully applied to more than 100 small-diameter sources listed in the MGPS.

KW - H II regions

KW - Radio lines: ISM

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DO - 10.1046/j.1365-8711.2002.05602.x

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SP - 114

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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A search for young Galactic supernova remnants

Abstract

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