Ccd imaging of ngc 4861 : morphology and brightness distribution
Autor(a) principal: | |
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Data de Publicação: | 1994 |
Outros Autores: | , , |
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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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 |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
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 |
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url |
http://hdl.handle.net/10183/98064 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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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info:eu-repo/semantics/openAccess |
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openAccess |
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