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Article: Three-dimensional structure of the central region of NGC 7027: A quest for trails of high-velocity jets

TitleThree-dimensional structure of the central region of NGC 7027: A quest for trails of high-velocity jets
Authors
KeywordsPlanetary nebulae: General
Stars: Carbon
Stars: Imaging
Stars: Individual (NGC 7027)
Stars: Kinematics and dynamics
Stars: Winds outflows
Issue Date2010
PublisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/AJ/home.html
Citation
Astronomical Journal, 2010, v. 140 n. 2, p. 490-499 How to Cite?
AbstractWe report on the results of a radio interferometric observation of NGC 7027 in the CO J = 2-1 and 13CO J = 2-1 lines. The results are analyzed with morpho-kinematic models developed from the software tool Shape. Our goal is to reveal the morpho-kinematic properties of the central region of the nebula, and to explore the nature of unseen high-velocity jets that may have created the characteristic structure of the central region consisting of molecular and ionized components. A simple ellipsoidal shell model explains the intensity distribution around the systemic velocity, but the high-velocity features deviate from the ellipsoidal model. Through the Shape automatic reconstruction model, we found a possible trail of a jet only in one direction, but no other possible holes were created by the passage of a jet. © 2010. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/65439
ISSN
2015 Impact Factor: 4.617
2015 SCImago Journal Rankings: 3.069
ISI Accession Number ID
Funding AgencyGrant Number
Hong Kong Special Administrative Region, ChinaHKU 703308P
HKU 702807P
HKU 704209P
University of Hong Kong200802159006
Natural Sciences and Engineering Research Council of Canada
Killam Trusts
Seed Funding Programme for Basic Research in HKU200909159007
Funding Information:

We thank Wolfgang Steffen for discussions on the Shape program. We also thank Selina Chong, Chih-Hao Hsia, and Bosco Yung for their useful comments and stimulating discussions. This research was supported by grants from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Nos. HKU 703308P, HKU 702807P, and HKU 704209P) and the Seed Funding Programme for Basic Research of the University of Hong Kong (Project No. 200802159006). N. K. acknowledges support from the Natural Sciences and Engineering Research Council of Canada, the Killam Trusts, and Alberta Ingenuity. Y. Z. is supported by the Seed Funding Programme for Basic Research in HKU (200909159007).

References
Grants

 

DC FieldValueLanguage
dc.contributor.authorNakashima, JIen_HK
dc.contributor.authorKwok, SUNen_HK
dc.contributor.authorZhang, Yen_HK
dc.contributor.authorKoning, Nen_HK
dc.date.accessioned2010-08-05T06:35:53Z-
dc.date.available2010-08-05T06:35:53Z-
dc.date.issued2010en_HK
dc.identifier.citationAstronomical Journal, 2010, v. 140 n. 2, p. 490-499en_HK
dc.identifier.issn0004-6256en_HK
dc.identifier.urihttp://hdl.handle.net/10722/65439-
dc.description.abstractWe report on the results of a radio interferometric observation of NGC 7027 in the CO J = 2-1 and 13CO J = 2-1 lines. The results are analyzed with morpho-kinematic models developed from the software tool Shape. Our goal is to reveal the morpho-kinematic properties of the central region of the nebula, and to explore the nature of unseen high-velocity jets that may have created the characteristic structure of the central region consisting of molecular and ionized components. A simple ellipsoidal shell model explains the intensity distribution around the systemic velocity, but the high-velocity features deviate from the ellipsoidal model. Through the Shape automatic reconstruction model, we found a possible trail of a jet only in one direction, but no other possible holes were created by the passage of a jet. © 2010. The American Astronomical Society. All rights reserved.en_HK
dc.languageeng-
dc.publisherUniversity of Chicago Press. The Journal's web site is located at http://www.journals.uchicago.edu/AJ/home.htmlen_HK
dc.relation.ispartofAstronomical Journalen_HK
dc.subjectPlanetary nebulae: Generalen_HK
dc.subjectStars: Carbonen_HK
dc.subjectStars: Imagingen_HK
dc.subjectStars: Individual (NGC 7027)en_HK
dc.subjectStars: Kinematics and dynamicsen_HK
dc.subjectStars: Winds outflowsen_HK
dc.titleThree-dimensional structure of the central region of NGC 7027: A quest for trails of high-velocity jetsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-6256&volume=140&spage=490&epage=499&date=2010&atitle=Three-Dimensional+Structure+of+the+Central+Region+of+NGC+7027:+A+Quest+for+Trails+of+High-Velocity+Jets-
dc.identifier.emailNakashima, JI: junichi@hku.hken_HK
dc.identifier.emailKwok, SUN: deannote@hku.hken_HK
dc.identifier.emailZhang, Y: zhangy96@hku.hken_HK
dc.identifier.authorityNakashima, JI=rp00764en_HK
dc.identifier.authorityKwok, SUN=rp00716en_HK
dc.identifier.authorityZhang, Y=rp00841en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1088/0004-6256/140/2/490en_HK
dc.identifier.scopuseid_2-s2.0-78049341709en_HK
dc.identifier.hkuros181557-
dc.identifier.hkuros170722-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-78049341709&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume140en_HK
dc.identifier.issue2en_HK
dc.identifier.spage490en_HK
dc.identifier.epage499en_HK
dc.identifier.isiWOS:000279958000016-
dc.publisher.placeUnited Statesen_HK
dc.relation.projectObservational Study of Red Supergiants Embedded in Galactic Young Open Clusters-
dc.relation.projectThe Morphological and Chemical Structure of Planetary Nebulae-
dc.relation.projectRadio Interferometric Observations of Post-AGB Stars and Proto-Planetary Nebulae-
dc.identifier.scopusauthoridNakashima, JI=35485342300en_HK
dc.identifier.scopusauthoridKwok, SUN=22980498300en_HK
dc.identifier.scopusauthoridZhang, Y=23768446500en_HK
dc.identifier.scopusauthoridKoning, N=15520613500en_HK

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