Radio continuum observations of LMC SNR J0550-6823

L. M. Bozzetto; M. D. Filipovic; E. J. Crawford; J. L. Payne; A. Y. De Horta; M. Stupar

Radio continuum observations of LMC SNR J0550-6823

L. M. Bozzetto, M. D. Filipovic, E. J. Crawford, J. L. Payne, A. Y. De Horta, M. Stupar

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Abstract

We report on new Australia Telescope Compact Array (ATCA) observations of the Large Magellanic Cloud (LMC) supernova remnant (SNR) J0550-6823 (DEM L328). This object is a typical horseshoe SNR with a diameter of 373″ ×282″ ±4″ (90×68±1 pc), making it one of the largest known SNRs in the Local Group. We estimate a relatively steep radio spectral index of α = -0.79 ± 0.27. However, its stronger than expected polarisation of 50% ± 10% is atypical for older and more evolved SNRs. We also note a strong correlation between [O III] and radio images, classifying this SNR as oxygen dominant.

Original language	English
Pages (from-to)	41-46
Number of pages	6
Journal	Revista Mexicana de Astronomia y Astrofisica
Volume	48
Issue number	1
Publication status	Published - 2012

Keywords

ISM: individual objects (DEM L328, SNR J0550-6823)
ISM: supernova remnants
Magellanic clouds

Cite this

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title = "Radio continuum observations of LMC SNR J0550-6823",

abstract = "We report on new Australia Telescope Compact Array (ATCA) observations of the Large Magellanic Cloud (LMC) supernova remnant (SNR) J0550-6823 (DEM L328). This object is a typical horseshoe SNR with a diameter of 373″ ×282″ ±4″ (90×68±1 pc), making it one of the largest known SNRs in the Local Group. We estimate a relatively steep radio spectral index of α = -0.79 ± 0.27. However, its stronger than expected polarisation of 50% ± 10% is atypical for older and more evolved SNRs. We also note a strong correlation between [O III] and radio images, classifying this SNR as oxygen dominant.",

keywords = "ISM: individual objects (DEM L328, SNR J0550-6823), ISM: supernova remnants, Magellanic clouds",

author = "Bozzetto, {L. M.} and Filipovic, {M. D.} and Crawford, {E. J.} and Payne, {J. L.} and {De Horta}, {A. Y.} and M. Stupar",

year = "2012",

language = "English",

volume = "48",

pages = "41--46",

journal = "Revista Mexicana de Astronomia y Astrofisica",

issn = "0185-1101",

publisher = "Universidad Nacional Autonoma de Mexico",

number = "1",

}

TY - JOUR

T1 - Radio continuum observations of LMC SNR J0550-6823

AU - Bozzetto, L. M.

AU - Filipovic, M. D.

AU - Crawford, E. J.

AU - Payne, J. L.

AU - De Horta, A. Y.

AU - Stupar, M.

PY - 2012

Y1 - 2012

N2 - We report on new Australia Telescope Compact Array (ATCA) observations of the Large Magellanic Cloud (LMC) supernova remnant (SNR) J0550-6823 (DEM L328). This object is a typical horseshoe SNR with a diameter of 373″ ×282″ ±4″ (90×68±1 pc), making it one of the largest known SNRs in the Local Group. We estimate a relatively steep radio spectral index of α = -0.79 ± 0.27. However, its stronger than expected polarisation of 50% ± 10% is atypical for older and more evolved SNRs. We also note a strong correlation between [O III] and radio images, classifying this SNR as oxygen dominant.

AB - We report on new Australia Telescope Compact Array (ATCA) observations of the Large Magellanic Cloud (LMC) supernova remnant (SNR) J0550-6823 (DEM L328). This object is a typical horseshoe SNR with a diameter of 373″ ×282″ ±4″ (90×68±1 pc), making it one of the largest known SNRs in the Local Group. We estimate a relatively steep radio spectral index of α = -0.79 ± 0.27. However, its stronger than expected polarisation of 50% ± 10% is atypical for older and more evolved SNRs. We also note a strong correlation between [O III] and radio images, classifying this SNR as oxygen dominant.

KW - ISM: individual objects (DEM L328, SNR J0550-6823)

KW - ISM: supernova remnants

KW - Magellanic clouds

M3 - Article

SN - 0185-1101

VL - 48

SP - 41

EP - 46

JO - Revista Mexicana de Astronomia y Astrofisica

JF - Revista Mexicana de Astronomia y Astrofisica

IS - 1

ER -

Radio continuum observations of LMC SNR J0550-6823

Abstract

Keywords

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