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Article: Confirmation of G6.31+0.54 as a part of a Galactic supernova remnant

TitleConfirmation of G6.31+0.54 as a part of a Galactic supernova remnant
Authors
KeywordsISM: individual objects: G6.31+0.54
ISM: supernova remnants
X-rays: individual: 1RXS J175752.1-231105
Issue Date2018
PublisherOxford University press, co-published with Royal Astronomical Society. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/
Citation
Monthly Notices of the Royal Astronomical Society, 2018, v. 479, p. 4432-4439 How to Cite?
AbstractA combination of archival multifrequency radio observations with narrow-band H α optical imagery and new confirmatory optical spectroscopy have shown that candidate supernova remnant (SNR) G6.31+0.54 can now be confirmed as part of a Galactic SNR. It has non-thermal emission, an optical emission line spectrum displaying shock excitation and standard SNR line ratios, fine filamentary structures in H α typical of optical remnants and closely overlapping radio and optical footprints. An X-ray ROSAT source 1RXS J175752.1-231105 was also found that matches the radio and optical emission though a definite association is not proven. Nevertheless, taken together, all these observed properties point to a clear SNR identification for this source. We provide a rough estimate for the kinematic distance to G6.31+0.54 of ˜4.5 kpc. The detected optical filaments are some ˜ 10 arcmin in extent (or about 13 pc at the assumed distance). However, as only a partial arcuate structure of the SNR can be seen (and not a full shell), the full angular extent of the SNR is unclear. Hence the physical extent of the observed partial shell is also difficult to estimate. If we assume an approximately circular shell then a conservative fit to the optical arc shaped filaments gives an angular diameter of ˜20 arcmin corresponding to a physical diameter of ˜26 pc that shows this to be an evolved remnant.
Persistent Identifierhttp://hdl.handle.net/10722/258705
ISSN
2023 Impact Factor: 4.7
2023 SCImago Journal Rankings: 1.621
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorParker, QA-
dc.contributor.authorStupar, M-
dc.date.accessioned2018-08-22T01:42:44Z-
dc.date.available2018-08-22T01:42:44Z-
dc.date.issued2018-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2018, v. 479, p. 4432-4439-
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/10722/258705-
dc.description.abstractA combination of archival multifrequency radio observations with narrow-band H α optical imagery and new confirmatory optical spectroscopy have shown that candidate supernova remnant (SNR) G6.31+0.54 can now be confirmed as part of a Galactic SNR. It has non-thermal emission, an optical emission line spectrum displaying shock excitation and standard SNR line ratios, fine filamentary structures in H α typical of optical remnants and closely overlapping radio and optical footprints. An X-ray ROSAT source 1RXS J175752.1-231105 was also found that matches the radio and optical emission though a definite association is not proven. Nevertheless, taken together, all these observed properties point to a clear SNR identification for this source. We provide a rough estimate for the kinematic distance to G6.31+0.54 of ˜4.5 kpc. The detected optical filaments are some ˜ 10 arcmin in extent (or about 13 pc at the assumed distance). However, as only a partial arcuate structure of the SNR can be seen (and not a full shell), the full angular extent of the SNR is unclear. Hence the physical extent of the observed partial shell is also difficult to estimate. If we assume an approximately circular shell then a conservative fit to the optical arc shaped filaments gives an angular diameter of ˜20 arcmin corresponding to a physical diameter of ˜26 pc that shows this to be an evolved remnant.-
dc.languageeng-
dc.publisherOxford University press, co-published with Royal Astronomical Society. The Journal's web site is located at http://www.oxfordjournals.org/our_journals/mnras/-
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society-
dc.rightsThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society © 2018 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.-
dc.subjectISM: individual objects: G6.31+0.54-
dc.subjectISM: supernova remnants-
dc.subjectX-rays: individual: 1RXS J175752.1-231105-
dc.titleConfirmation of G6.31+0.54 as a part of a Galactic supernova remnant-
dc.typeArticle-
dc.identifier.emailParker, QA: quentinp@hku.hk-
dc.identifier.authorityParker, QA=rp02017-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1093/mnras/sty1684-
dc.identifier.scopuseid_2-s2.0-85051463303-
dc.identifier.hkuros286733-
dc.identifier.volume479-
dc.identifier.spage4432-
dc.identifier.epage4439-
dc.identifier.isiWOS:000441383700012-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0035-8711-

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