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Article: A pilot study of the radio-continuum emission from MASH planetary nebulae

TitleA pilot study of the radio-continuum emission from MASH planetary nebulae
Authors
KeywordsAstronomical data bases: Miscellaneous
Radio continuum: ISM
Radiation mechanisms: thermal
Planetary nebulae: general
Issue Date2011
Citation
Astronomische Nachrichten, 2011, v. 332, n. 7, p. 697-705 How to Cite?
AbstractWe report an Australia Telescope Compact Array (ATCA) radio-continuum observations of 26 planetary nebulae (PNe) at wavelengths of 3 and 6 cm. This sample of 26 PNe were taken from the Macquarie/AAO/Strasbourg Hα PNe (MASH) catalogue and previous lists. We investigate radio detection quality including measured and derived parameters for all detected or marginally detected PNe from this combined sample. Some 11 objects from the observed sample have been successfully detected and parametrized. Except for one, all detected PNe have very low radio surface brightnesses. We use a statistical distance scale method to calculate distances and ionised masses of the detected objects. Nebulae from this sample are found tobe large (>0.2 pc in diameter) and highly diluted which indicates old age. For 21 PNe from this sample we list integrated Hα fluxes and interstellar extinction coefficients, either taken from the literature or derived here from the Balmer decrement and radio to Hα ratio methods. Finally, our detected fraction of the MASH pilot sample is relatively low compared to the non-MASH sub-sample. We conclude that future radio surveys of the MASH sample must involve deeper observations with better uv coverage in order to increase the fraction of detected objects and improve the quality of the derived parameters. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Persistent Identifierhttp://hdl.handle.net/10722/208924
ISSN
2015 Impact Factor: 0.956
2015 SCImago Journal Rankings: 0.701

 

DC FieldValueLanguage
dc.contributor.authorBojičić, Ivan S.-
dc.contributor.authorParker, Quentin A.-
dc.contributor.authorFrew, David J.-
dc.contributor.authorVaughan, Alan E.-
dc.contributor.authorFilipovíc, Miroslav D.-
dc.contributor.authorGunawardhana, Madusha L P-
dc.date.accessioned2015-03-23T02:02:12Z-
dc.date.available2015-03-23T02:02:12Z-
dc.date.issued2011-
dc.identifier.citationAstronomische Nachrichten, 2011, v. 332, n. 7, p. 697-705-
dc.identifier.issn0004-6337-
dc.identifier.urihttp://hdl.handle.net/10722/208924-
dc.description.abstractWe report an Australia Telescope Compact Array (ATCA) radio-continuum observations of 26 planetary nebulae (PNe) at wavelengths of 3 and 6 cm. This sample of 26 PNe were taken from the Macquarie/AAO/Strasbourg Hα PNe (MASH) catalogue and previous lists. We investigate radio detection quality including measured and derived parameters for all detected or marginally detected PNe from this combined sample. Some 11 objects from the observed sample have been successfully detected and parametrized. Except for one, all detected PNe have very low radio surface brightnesses. We use a statistical distance scale method to calculate distances and ionised masses of the detected objects. Nebulae from this sample are found tobe large (>0.2 pc in diameter) and highly diluted which indicates old age. For 21 PNe from this sample we list integrated Hα fluxes and interstellar extinction coefficients, either taken from the literature or derived here from the Balmer decrement and radio to Hα ratio methods. Finally, our detected fraction of the MASH pilot sample is relatively low compared to the non-MASH sub-sample. We conclude that future radio surveys of the MASH sample must involve deeper observations with better uv coverage in order to increase the fraction of detected objects and improve the quality of the derived parameters. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.-
dc.languageeng-
dc.relation.ispartofAstronomische Nachrichten-
dc.subjectAstronomical data bases: Miscellaneous-
dc.subjectRadio continuum: ISM-
dc.subjectRadiation mechanisms: thermal-
dc.subjectPlanetary nebulae: general-
dc.titleA pilot study of the radio-continuum emission from MASH planetary nebulae-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/asna.201011571-
dc.identifier.scopuseid_2-s2.0-80051946184-
dc.identifier.volume332-
dc.identifier.issue7-
dc.identifier.spage697-
dc.identifier.epage705-
dc.identifier.eissn1521-3994-

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