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Article: New Galactic Planetary nebulae selected by radio and multi-wavelength characteristics

TitleNew Galactic Planetary nebulae selected by radio and multi-wavelength characteristics
Authors
KeywordsPlanetary nebulae: general
Radio continuum: general
Techniques: spectroscopic
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. 480 n. 3, p. 2916-2928 How to Cite?
AbstractWe have used the Cornish radio catalogue combined with the use of multi-wavelength data to identify 62 new Planetary Nebula (PN) candidates close to the Galactic mid-plane. Of this sample 11 have weak optical counterparts in deep narrow band Hα imaging that allows their spectroscopic follow-up. We have observed eight of these candidates spectroscopically, leading to the confirmation of 7 out of 8 as PNe. All but one of our sample of newly detected PNe appear to be of Type I chemistry with very large [NII]/Hα ratios. This indicates that our selection method heavily favours detection of this kind of PN. Cornish is a low Galactic latitude survey where young objects and Type I PNe (thought to derive from higher mass progenitors) are more plentiful, but where optical extinction is large. The very high success rate in correctly identifying PNe in this zone proves the efficacy of our radio and multiple multi-wavelength diagnostic tools used to successfully predict and then confirm their PN nature, at least in the cases where an optical counterpart is found and has been observed. The study reinforces the effective use of a combination of multi-wavelength and optical data in the identification of new Galactic PNe and especially those of Type I chemistries whose dusty environments often prevents their easy detection in the optical regime alone.
Persistent Identifierhttp://hdl.handle.net/10722/258707
ISSN
2023 Impact Factor: 4.7
2023 SCImago Journal Rankings: 1.621
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorFRAGKOU, V-
dc.contributor.authorParker, QA-
dc.contributor.authorBojicic, I-
dc.contributor.authorAksaker, N-
dc.date.accessioned2018-08-22T01:42:46Z-
dc.date.available2018-08-22T01:42:46Z-
dc.date.issued2018-
dc.identifier.citationMonthly Notices of the Royal Astronomical Society, 2018, v. 480 n. 3, p. 2916-2928-
dc.identifier.issn0035-8711-
dc.identifier.urihttp://hdl.handle.net/10722/258707-
dc.description.abstractWe have used the Cornish radio catalogue combined with the use of multi-wavelength data to identify 62 new Planetary Nebula (PN) candidates close to the Galactic mid-plane. Of this sample 11 have weak optical counterparts in deep narrow band Hα imaging that allows their spectroscopic follow-up. We have observed eight of these candidates spectroscopically, leading to the confirmation of 7 out of 8 as PNe. All but one of our sample of newly detected PNe appear to be of Type I chemistry with very large [NII]/Hα ratios. This indicates that our selection method heavily favours detection of this kind of PN. Cornish is a low Galactic latitude survey where young objects and Type I PNe (thought to derive from higher mass progenitors) are more plentiful, but where optical extinction is large. The very high success rate in correctly identifying PNe in this zone proves the efficacy of our radio and multiple multi-wavelength diagnostic tools used to successfully predict and then confirm their PN nature, at least in the cases where an optical counterpart is found and has been observed. The study reinforces the effective use of a combination of multi-wavelength and optical data in the identification of new Galactic PNe and especially those of Type I chemistries whose dusty environments often prevents their easy detection in the optical regime alone.-
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.subjectPlanetary nebulae: general-
dc.subjectRadio continuum: general-
dc.subjectTechniques: spectroscopic-
dc.titleNew Galactic Planetary nebulae selected by radio and multi-wavelength characteristics-
dc.typeArticle-
dc.identifier.emailParker, QA: quentinp@hku.hk-
dc.identifier.authorityParker, QA=rp02017-
dc.identifier.authorityBojicic, I=rp02020-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1093/mnras/sty1977-
dc.identifier.scopuseid_2-s2.0-85055171158-
dc.identifier.hkuros287052-
dc.identifier.volume480-
dc.identifier.issue3-
dc.identifier.spage2916-
dc.identifier.epage2928-
dc.identifier.isiWOS:000449616200006-
dc.publisher.placeUnited Kingdom-
dc.identifier.issnl0035-8711-

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