Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203

Detalhes bibliográficos
Autor(a) principal: Bassin Filho, Máximo
Data de Publicação: 2003
Outros Autores: Bonatto, Charles Jose
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/206302
Resumo: We investigate the stellar population content in the lenticular galaxies NGC1023, NGC3115 and NGC4203 applying a population synthesis method based on a seven component spectral basis with different ages – 2.5 × 106, 10× 106, 25× 106, 75× 106, 200 × 106,1 .2 × 109 and older than 1010 years, and metallicity in the range −1.3 ≤ [Z/Z ] ≤− 0.2. This study employs two-dimensional STIS spectra in the range λλ2900–5700 Å, obtained from the Hubble Space Telescope public archives. We extracted one-dimensional spectra in adjacent windows 100 pc wide (projected distance) from the nuclear regions up to 300–400 pc. The largest contribution, both in λ5870Å flux and mass fraction, comes from old stars (age > 1010 years). We verified the possible existence of circumnuclear bursts (CNBs) in NGC3115 and NGC4203.
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spelling Bassin Filho, MáximoBonatto, Charles Jose2020-02-28T04:05:50Z20030004-6361http://hdl.handle.net/10183/206302000387754We investigate the stellar population content in the lenticular galaxies NGC1023, NGC3115 and NGC4203 applying a population synthesis method based on a seven component spectral basis with different ages – 2.5 × 106, 10× 106, 25× 106, 75× 106, 200 × 106,1 .2 × 109 and older than 1010 years, and metallicity in the range −1.3 ≤ [Z/Z ] ≤− 0.2. This study employs two-dimensional STIS spectra in the range λλ2900–5700 Å, obtained from the Hubble Space Telescope public archives. We extracted one-dimensional spectra in adjacent windows 100 pc wide (projected distance) from the nuclear regions up to 300–400 pc. The largest contribution, both in λ5870Å flux and mass fraction, comes from old stars (age > 1010 years). We verified the possible existence of circumnuclear bursts (CNBs) in NGC3115 and NGC4203.application/pdfengAstronomy and astrophysics. Les Ulis. Vol. 410, no. 3 (Nov. 2003), p. 803-812Nucleo galaticoGaláxiasPopulacoes estelaresGalaxies: elliptical and lenticular, cDGalaxies: stellar contentGalaxies: nucleiStellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203Estrangeiroinfo: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:UFRGSTEXT000387754.pdf.txt000387754.pdf.txtExtracted Texttext/plain38688http://www.lume.ufrgs.br/bitstream/10183/206302/2/000387754.pdf.txt9762505f119663e4b2294c788d5f3b71MD52ORIGINAL000387754.pdfTexto completo (inglês)application/pdf552021http://www.lume.ufrgs.br/bitstream/10183/206302/1/000387754.pdf07de641204e694a009cd008b28cdc5a4MD5110183/2063022023-07-15 03:27:18.666634oai:www.lume.ufrgs.br:10183/206302Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-15T06:27:18Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
title Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
spellingShingle Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
Bassin Filho, Máximo
Nucleo galatico
Galáxias
Populacoes estelares
Galaxies: elliptical and lenticular, cD
Galaxies: stellar content
Galaxies: nuclei
title_short Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
title_full Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
title_fullStr Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
title_full_unstemmed Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
title_sort Stellar population gradient in lenticular galaxies : NGC 1023, NGC 3115 and NGC 4203
author Bassin Filho, Máximo
author_facet Bassin Filho, Máximo
Bonatto, Charles Jose
author_role author
author2 Bonatto, Charles Jose
author2_role author
dc.contributor.author.fl_str_mv Bassin Filho, Máximo
Bonatto, Charles Jose
dc.subject.por.fl_str_mv Nucleo galatico
Galáxias
Populacoes estelares
topic Nucleo galatico
Galáxias
Populacoes estelares
Galaxies: elliptical and lenticular, cD
Galaxies: stellar content
Galaxies: nuclei
dc.subject.eng.fl_str_mv Galaxies: elliptical and lenticular, cD
Galaxies: stellar content
Galaxies: nuclei
description We investigate the stellar population content in the lenticular galaxies NGC1023, NGC3115 and NGC4203 applying a population synthesis method based on a seven component spectral basis with different ages – 2.5 × 106, 10× 106, 25× 106, 75× 106, 200 × 106,1 .2 × 109 and older than 1010 years, and metallicity in the range −1.3 ≤ [Z/Z ] ≤− 0.2. This study employs two-dimensional STIS spectra in the range λλ2900–5700 Å, obtained from the Hubble Space Telescope public archives. We extracted one-dimensional spectra in adjacent windows 100 pc wide (projected distance) from the nuclear regions up to 300–400 pc. The largest contribution, both in λ5870Å flux and mass fraction, comes from old stars (age > 1010 years). We verified the possible existence of circumnuclear bursts (CNBs) in NGC3115 and NGC4203.
publishDate 2003
dc.date.issued.fl_str_mv 2003
dc.date.accessioned.fl_str_mv 2020-02-28T04:05:50Z
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/10183/206302
dc.identifier.issn.pt_BR.fl_str_mv 0004-6361
dc.identifier.nrb.pt_BR.fl_str_mv 000387754
identifier_str_mv 0004-6361
000387754
url http://hdl.handle.net/10183/206302
dc.language.iso.fl_str_mv eng
language eng
dc.relation.ispartof.pt_BR.fl_str_mv Astronomy and astrophysics. Les Ulis. Vol. 410, no. 3 (Nov. 2003), p. 803-812
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/10183/206302/2/000387754.pdf.txt
http://www.lume.ufrgs.br/bitstream/10183/206302/1/000387754.pdf
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