Hidden trigger for the giant starburst arc in M83?
Autor(a) principal: | |
---|---|
Data de Publicação: | 2006 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/108968 |
Resumo: | The huge star formation events that occur at some galactic centers do not provide enough clues as to their origin, since the morphological signatures of the triggering mechanism are smeared out in the timescale of a few orbital revolutions of the galaxy core. Our high spatial resolution three-dimensional near-infrared spectroscopy for the first time reveals that a previously known hidden mass concentration is located exactly at the youngest end of a giant starforming arc. This location, the inferred average cluster ages, and the dynamical times clearly indicate that the interloper has left behind a spur of violent star formation in M83, in a transient event lasting less than one orbital revolution. The study of the origin (bar funneling or cannibalized satellite) and fate (black hole merging or giant stellar cluster) of this system could provide clues to the question of core growing and morphological evolution in grand-design spiral galaxies. In particular, our TreeSPH numericalmodeling suggests that the two nuclei could coalesce, forming a singlemassive core in about 60million years or less. Thiswork is based on observations made at the Gemini South Telescope. |
id |
UFRGS-2_3cf916c6b892f6ebe7474b7910de29a5 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/108968 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Díaz, Rubén JoaquínDottori, Horacio AlbertoAgüero, Maria PazMediavilla, EvencioRodrigues, IrapuanMast, Damián2015-01-15T02:15:08Z20060004-637Xhttp://hdl.handle.net/10183/108968000680795The huge star formation events that occur at some galactic centers do not provide enough clues as to their origin, since the morphological signatures of the triggering mechanism are smeared out in the timescale of a few orbital revolutions of the galaxy core. Our high spatial resolution three-dimensional near-infrared spectroscopy for the first time reveals that a previously known hidden mass concentration is located exactly at the youngest end of a giant starforming arc. This location, the inferred average cluster ages, and the dynamical times clearly indicate that the interloper has left behind a spur of violent star formation in M83, in a transient event lasting less than one orbital revolution. The study of the origin (bar funneling or cannibalized satellite) and fate (black hole merging or giant stellar cluster) of this system could provide clues to the question of core growing and morphological evolution in grand-design spiral galaxies. In particular, our TreeSPH numericalmodeling suggests that the two nuclei could coalesce, forming a singlemassive core in about 60million years or less. Thiswork is based on observations made at the Gemini South Telescope.application/pdfengThe astrophysical journal. Chicago. Vol. 652, no. 2 (Dec. 2006), p. 1122-1128Galáxias ativasGaláxia M83Nucleo galaticoCinemáticaGalaxies: activeGalaxies: individual (M83)Galaxies: ISMGalaxies: kinematics and dynamicsGalaxies: nucleiGalaxies: starburstHidden trigger for the giant starburst arc in M83?Estrangeiroinfo: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:UFRGSORIGINAL000680795.pdf000680795.pdfTexto completo (inglês)application/pdf409529http://www.lume.ufrgs.br/bitstream/10183/108968/1/000680795.pdf4b841ca0577200a30ae15e46a575a5e1MD51TEXT000680795.pdf.txt000680795.pdf.txtExtracted Texttext/plain39856http://www.lume.ufrgs.br/bitstream/10183/108968/2/000680795.pdf.txt84fcbf7ca078bbe175a1b81f6fd9dee2MD52THUMBNAIL000680795.pdf.jpg000680795.pdf.jpgGenerated Thumbnailimage/jpeg1897http://www.lume.ufrgs.br/bitstream/10183/108968/3/000680795.pdf.jpg1a4f1b09ba2f33c27b75893072786d09MD5310183/1089682018-10-23 08:40:14.784oai:www.lume.ufrgs.br:10183/108968Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-23T11:40:14Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Hidden trigger for the giant starburst arc in M83? |
title |
Hidden trigger for the giant starburst arc in M83? |
spellingShingle |
Hidden trigger for the giant starburst arc in M83? Díaz, Rubén Joaquín Galáxias ativas Galáxia M83 Nucleo galatico Cinemática Galaxies: active Galaxies: individual (M83) Galaxies: ISM Galaxies: kinematics and dynamics Galaxies: nuclei Galaxies: starburst |
title_short |
Hidden trigger for the giant starburst arc in M83? |
title_full |
Hidden trigger for the giant starburst arc in M83? |
title_fullStr |
Hidden trigger for the giant starburst arc in M83? |
title_full_unstemmed |
Hidden trigger for the giant starburst arc in M83? |
title_sort |
Hidden trigger for the giant starburst arc in M83? |
author |
Díaz, Rubén Joaquín |
author_facet |
Díaz, Rubén Joaquín Dottori, Horacio Alberto Agüero, Maria Paz Mediavilla, Evencio Rodrigues, Irapuan Mast, Damián |
author_role |
author |
author2 |
Dottori, Horacio Alberto Agüero, Maria Paz Mediavilla, Evencio Rodrigues, Irapuan Mast, Damián |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Díaz, Rubén Joaquín Dottori, Horacio Alberto Agüero, Maria Paz Mediavilla, Evencio Rodrigues, Irapuan Mast, Damián |
dc.subject.por.fl_str_mv |
Galáxias ativas Galáxia M83 Nucleo galatico Cinemática |
topic |
Galáxias ativas Galáxia M83 Nucleo galatico Cinemática Galaxies: active Galaxies: individual (M83) Galaxies: ISM Galaxies: kinematics and dynamics Galaxies: nuclei Galaxies: starburst |
dc.subject.eng.fl_str_mv |
Galaxies: active Galaxies: individual (M83) Galaxies: ISM Galaxies: kinematics and dynamics Galaxies: nuclei Galaxies: starburst |
description |
The huge star formation events that occur at some galactic centers do not provide enough clues as to their origin, since the morphological signatures of the triggering mechanism are smeared out in the timescale of a few orbital revolutions of the galaxy core. Our high spatial resolution three-dimensional near-infrared spectroscopy for the first time reveals that a previously known hidden mass concentration is located exactly at the youngest end of a giant starforming arc. This location, the inferred average cluster ages, and the dynamical times clearly indicate that the interloper has left behind a spur of violent star formation in M83, in a transient event lasting less than one orbital revolution. The study of the origin (bar funneling or cannibalized satellite) and fate (black hole merging or giant stellar cluster) of this system could provide clues to the question of core growing and morphological evolution in grand-design spiral galaxies. In particular, our TreeSPH numericalmodeling suggests that the two nuclei could coalesce, forming a singlemassive core in about 60million years or less. Thiswork is based on observations made at the Gemini South Telescope. |
publishDate |
2006 |
dc.date.issued.fl_str_mv |
2006 |
dc.date.accessioned.fl_str_mv |
2015-01-15T02:15:08Z |
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/10183/108968 |
dc.identifier.issn.pt_BR.fl_str_mv |
0004-637X |
dc.identifier.nrb.pt_BR.fl_str_mv |
000680795 |
identifier_str_mv |
0004-637X 000680795 |
url |
http://hdl.handle.net/10183/108968 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
The astrophysical journal. Chicago. Vol. 652, no. 2 (Dec. 2006), p. 1122-1128 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/108968/1/000680795.pdf http://www.lume.ufrgs.br/bitstream/10183/108968/2/000680795.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/108968/3/000680795.pdf.jpg |
bitstream.checksum.fl_str_mv |
4b841ca0577200a30ae15e46a575a5e1 84fcbf7ca078bbe175a1b81f6fd9dee2 1a4f1b09ba2f33c27b75893072786d09 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224862770921472 |