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Conference Paper: Observations of continuum and recombination-line emission from η carinae at a wavelength of 3 CM

TitleObservations of continuum and recombination-line emission from η carinae at a wavelength of 3 CM
Authors
KeywordsRadio Continuum: Interstellar
Radio Lines: Interstellar
Stars: Individual: (Η Car)
Issue Date1995
Citation
Revista Mexicana De Astronomia Y Astrofisica: Serie De Conferencias, 1995, v. 2, p. 23-25 How to Cite?
AbstractWe have made 1″ resolution images of η Carinae in both the 3 cm radio continuum and in the H90α and H91α hydrogen recombination lines. The continuum image shows a source with dimensions 10″ × 8″ whose centre coincides with the star, and whose axes of symmetry align approximately, but not exactly, with those of the optical Homunculus. In shape, the image closely resembles infrared images obtained by other authors. The radio emission is unpolarized, and offers no support to models which invoke degenerate stars or more exotic objects within the core of η Carinae. Instead it is consistent with thermal emission from gas flowing away from a 'Luminous Blue Variable' star. The spectrum obtained from the recombination line observations shows two strong peaks, one at -35 km s -1, and the other at -240 km s -1. The former is close to the systemic velocity of η Carinae, the latter must arise from outflowing gas. Imaging shows that these line emissions arise from two small areas, displaced 0.5″ and 1″ respectively, NW of η Carinae. © Universidad Nacional Autónoma de México.
Persistent Identifierhttp://hdl.handle.net/10722/176203
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorDuncan, RAen_US
dc.contributor.authorWhite, SMen_US
dc.contributor.authorLim, Jen_US
dc.contributor.authorNelson, GJen_US
dc.contributor.authorDrake, SAen_US
dc.contributor.authorKundu, MRen_US
dc.date.accessioned2012-11-26T09:06:51Z-
dc.date.available2012-11-26T09:06:51Z-
dc.date.issued1995en_US
dc.identifier.citationRevista Mexicana De Astronomia Y Astrofisica: Serie De Conferencias, 1995, v. 2, p. 23-25en_US
dc.identifier.issn1405-2059en_US
dc.identifier.urihttp://hdl.handle.net/10722/176203-
dc.description.abstractWe have made 1″ resolution images of η Carinae in both the 3 cm radio continuum and in the H90α and H91α hydrogen recombination lines. The continuum image shows a source with dimensions 10″ × 8″ whose centre coincides with the star, and whose axes of symmetry align approximately, but not exactly, with those of the optical Homunculus. In shape, the image closely resembles infrared images obtained by other authors. The radio emission is unpolarized, and offers no support to models which invoke degenerate stars or more exotic objects within the core of η Carinae. Instead it is consistent with thermal emission from gas flowing away from a 'Luminous Blue Variable' star. The spectrum obtained from the recombination line observations shows two strong peaks, one at -35 km s -1, and the other at -240 km s -1. The former is close to the systemic velocity of η Carinae, the latter must arise from outflowing gas. Imaging shows that these line emissions arise from two small areas, displaced 0.5″ and 1″ respectively, NW of η Carinae. © Universidad Nacional Autónoma de México.en_US
dc.languageengen_US
dc.relation.ispartofRevista Mexicana de Astronomia y Astrofisica: Serie de Conferenciasen_US
dc.subjectRadio Continuum: Interstellaren_US
dc.subjectRadio Lines: Interstellaren_US
dc.subjectStars: Individual: (Η Car)en_US
dc.titleObservations of continuum and recombination-line emission from η carinae at a wavelength of 3 CMen_US
dc.typeConference_Paperen_US
dc.identifier.emailLim, J: jjlim@hku.hken_US
dc.identifier.authorityLim, J=rp00745en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-70749107458en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70749107458&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume2en_US
dc.identifier.spage23en_US
dc.identifier.epage25en_US
dc.identifier.scopusauthoridDuncan, RA=7401604768en_US
dc.identifier.scopusauthoridWhite, SM=7404079906en_US
dc.identifier.scopusauthoridLim, J=7403453870en_US
dc.identifier.scopusauthoridNelson, GJ=16459833800en_US
dc.identifier.scopusauthoridDrake, SA=7102438520en_US
dc.identifier.scopusauthoridKundu, MR=7102095820en_US

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