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Article: Disklike structure in the semiregular pulsating star x herculis

TitleDisklike structure in the semiregular pulsating star x herculis
Authors
KeywordsCircumstellar Matter
Stars: Agb And Post-Agb
Stars: Imaging
Stars: Individual (X Herculis)
Stars: Late-Type
Stars: Mass Loss
Issue Date2005
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205
Citation
Astrophysical Journal Letters, 2005, v. 620 n. 2 I, p. 943-947 How to Cite?
AbstractThis paper reports the results of a Berkeley-Illinois-Maryland (BIMA) array interferometric observation of a semiregular pulsating star with an unusual narrow molecular line profile, X Her, in the CO J = 1-0 line. In the CO spectrum, a double-component profile (including narrow and broad components) is seen, as reported by previous observations. The narrow component consists of two spiky peaks. The spatial structure of the board component shows bipolar shape, and that of the narrow component shows an elliptical/spherical shape. The two peaks in the narrow component show a systematic difference in the integrated intensity map. The kinematical and geometrical properties of the narrow component are reminiscent of a Keplerian rotating disk with a central mass of 0.9 M ⊙, although an interpretation as an expansion disk seems to be more natural. A secondary bipolar flow instead of the disk also cannot be fully excluded as an interpretation of the narrow line. © 2005. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/174939
ISSN
2015 Impact Factor: 5.487
2015 SCImago Journal Rankings: 3.369
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNakashima, JIen_US
dc.date.accessioned2012-11-26T08:48:15Z-
dc.date.available2012-11-26T08:48:15Z-
dc.date.issued2005en_US
dc.identifier.citationAstrophysical Journal Letters, 2005, v. 620 n. 2 I, p. 943-947en_US
dc.identifier.issn2041-8205en_US
dc.identifier.urihttp://hdl.handle.net/10722/174939-
dc.description.abstractThis paper reports the results of a Berkeley-Illinois-Maryland (BIMA) array interferometric observation of a semiregular pulsating star with an unusual narrow molecular line profile, X Her, in the CO J = 1-0 line. In the CO spectrum, a double-component profile (including narrow and broad components) is seen, as reported by previous observations. The narrow component consists of two spiky peaks. The spatial structure of the board component shows bipolar shape, and that of the narrow component shows an elliptical/spherical shape. The two peaks in the narrow component show a systematic difference in the integrated intensity map. The kinematical and geometrical properties of the narrow component are reminiscent of a Keplerian rotating disk with a central mass of 0.9 M ⊙, although an interpretation as an expansion disk seems to be more natural. A secondary bipolar flow instead of the disk also cannot be fully excluded as an interpretation of the narrow line. © 2005. The American Astronomical Society. All rights reserved.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/2041-8205en_US
dc.relation.ispartofAstrophysical Journal Lettersen_US
dc.subjectCircumstellar Matteren_US
dc.subjectStars: Agb And Post-Agben_US
dc.subjectStars: Imagingen_US
dc.subjectStars: Individual (X Herculis)en_US
dc.subjectStars: Late-Typeen_US
dc.subjectStars: Mass Lossen_US
dc.titleDisklike structure in the semiregular pulsating star x herculisen_US
dc.typeArticleen_US
dc.identifier.emailNakashima, JI: junichi@hku.hken_US
dc.identifier.authorityNakashima, JI=rp00764en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1086/427145en_US
dc.identifier.scopuseid_2-s2.0-17144418993en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-17144418993&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume620en_US
dc.identifier.issue2 Ien_US
dc.identifier.spage943en_US
dc.identifier.epage947en_US
dc.identifier.isiWOS:000227405800034-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridNakashima, JI=35485342300en_US

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