Ccd imaging of ngc 4861 : morphology and brightness distribution

Detalhes bibliográficos
Autor(a) principal: Dottori, Horacio Alberto
Data de Publicação: 1994
Outros Autores: Cepa, Jordi, Vilchez, Jose M., Barth, Clarissa Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/98064
Resumo: We discuss narrow band CCD imaging of NGC 4861 in continua at 4500 Å, 5300 Å and 6300 Å as well as in Hα, Hβ and [OIII] λ 5007Å lines. We find that the system exhibits a double nucleus structure anda counter-tail to the well-known NE chain of HII regions. The mean value of lines and continua frames for the main body brightness distribution ofNGC 4861 is R-2.04±0.35, comparable to the Hubble-Reynolds law R-². The three mentioned characteristics indicate that NGC 4861 might have undergone a merger process. The time elapsed from the beginning of the phenomenon is set to be smaller than three crossing times. New observations are proposed to confirm or reject the merger scenario for this peculiar galaxy.
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spelling Dottori, Horacio AlbertoCepa, JordiVilchez, Jose M.Barth, Clarissa Silva2014-07-18T02:04:27Z19940004-6361http://hdl.handle.net/10183/98064000254327We discuss narrow band CCD imaging of NGC 4861 in continua at 4500 Å, 5300 Å and 6300 Å as well as in Hα, Hβ and [OIII] λ 5007Å lines. We find that the system exhibits a double nucleus structure anda counter-tail to the well-known NE chain of HII regions. The mean value of lines and continua frames for the main body brightness distribution ofNGC 4861 is R-2.04±0.35, comparable to the Hubble-Reynolds law R-². The three mentioned characteristics indicate that NGC 4861 might have undergone a merger process. The time elapsed from the beginning of the phenomenon is set to be smaller than three crossing times. New observations are proposed to confirm or reject the merger scenario for this peculiar galaxy.application/pdfengAstronomy and Astrophysics. Berlin. Vol. 283, no. 3 (Mar. 1994), p. 753-758Astrofisica extragalaticaGaláxia NGC 4861Materia interestelarGalaxies: individual: NGC 4861Galaxies: interactionsGalaxies: interstellar matterGalaxies: irregularCcd imaging of ngc 4861 : morphology and brightness distributionEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000254327.pdf000254327.pdfTexto completo (inglês)application/pdf632788http://www.lume.ufrgs.br/bitstream/10183/98064/1/000254327.pdfd29a91b73c07998a8fcd0fd62706c1e3MD51TEXT000254327.pdf.txt000254327.pdf.txtExtracted Texttext/plain132http://www.lume.ufrgs.br/bitstream/10183/98064/2/000254327.pdf.txt68cdad9bb218a2434c8d535b7bbbc8f1MD52THUMBNAIL000254327.pdf.jpg000254327.pdf.jpgGenerated Thumbnailimage/jpeg2094http://www.lume.ufrgs.br/bitstream/10183/98064/3/000254327.pdf.jpg35c1c234c34958d6a0e5f7eca5c9b5f2MD5310183/980642018-10-19 10:53:49.3oai:www.lume.ufrgs.br:10183/98064Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-19T13:53:49Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Ccd imaging of ngc 4861 : morphology and brightness distribution
title Ccd imaging of ngc 4861 : morphology and brightness distribution
spellingShingle Ccd imaging of ngc 4861 : morphology and brightness distribution
Dottori, Horacio Alberto
Astrofisica extragalatica
Galáxia NGC 4861
Materia interestelar
Galaxies: individual: NGC 4861
Galaxies: interactions
Galaxies: interstellar matter
Galaxies: irregular
title_short Ccd imaging of ngc 4861 : morphology and brightness distribution
title_full Ccd imaging of ngc 4861 : morphology and brightness distribution
title_fullStr Ccd imaging of ngc 4861 : morphology and brightness distribution
title_full_unstemmed Ccd imaging of ngc 4861 : morphology and brightness distribution
title_sort Ccd imaging of ngc 4861 : morphology and brightness distribution
author Dottori, Horacio Alberto
author_facet Dottori, Horacio Alberto
Cepa, Jordi
Vilchez, Jose M.
Barth, Clarissa Silva
author_role author
author2 Cepa, Jordi
Vilchez, Jose M.
Barth, Clarissa Silva
author2_role author
author
author
dc.contributor.author.fl_str_mv Dottori, Horacio Alberto
Cepa, Jordi
Vilchez, Jose M.
Barth, Clarissa Silva
dc.subject.por.fl_str_mv Astrofisica extragalatica
Galáxia NGC 4861
Materia interestelar
topic Astrofisica extragalatica
Galáxia NGC 4861
Materia interestelar
Galaxies: individual: NGC 4861
Galaxies: interactions
Galaxies: interstellar matter
Galaxies: irregular
dc.subject.eng.fl_str_mv Galaxies: individual: NGC 4861
Galaxies: interactions
Galaxies: interstellar matter
Galaxies: irregular
description We discuss narrow band CCD imaging of NGC 4861 in continua at 4500 Å, 5300 Å and 6300 Å as well as in Hα, Hβ and [OIII] λ 5007Å lines. We find that the system exhibits a double nucleus structure anda counter-tail to the well-known NE chain of HII regions. The mean value of lines and continua frames for the main body brightness distribution ofNGC 4861 is R-2.04±0.35, comparable to the Hubble-Reynolds law R-². The three mentioned characteristics indicate that NGC 4861 might have undergone a merger process. The time elapsed from the beginning of the phenomenon is set to be smaller than three crossing times. New observations are proposed to confirm or reject the merger scenario for this peculiar galaxy.
publishDate 1994
dc.date.issued.fl_str_mv 1994
dc.date.accessioned.fl_str_mv 2014-07-18T02:04:27Z
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10183/98064
dc.identifier.issn.pt_BR.fl_str_mv 0004-6361
dc.identifier.nrb.pt_BR.fl_str_mv 000254327
identifier_str_mv 0004-6361
000254327
url http://hdl.handle.net/10183/98064
dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Astronomy and Astrophysics. Berlin. Vol. 283, no. 3 (Mar. 1994), p. 753-758
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