Hst observations of the field star population in the large magellanic cloud
Autor(a) principal: | |
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Data de Publicação: | 1997 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/88738 |
Resumo: | We present V and I photometry, obtained with the Hubble Space Telescope, for ~ 15 800 stars in a field in the inner disc of the Large Magellanic Cloud. We confirm previous results indicating that an intense star formation event, probably corresponding to the formation of the LMC disc, occurred a few times 109 yr ago. We find a small but real difference between our field and one further out in the disc observed by Gallagher et al.: either star formation in the inner disc commenced slightly earlier, or the stars are slightly more metal-rich. We also find evidence for a later burst, around 1 Gyr ago, which may correspond to the formation of the LMC bar. About 5 per cent of the stars in our field are substantially older than either burst, and are probably members of an old disc or halo population with age ~ 12 Gyr. |
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Elson, Rebecca A.W.Gilmore, Gerard FitzgeraldSantiago, Basilio Xavier2014-03-21T01:48:56Z19970035-8711http://hdl.handle.net/10183/88738000210685We present V and I photometry, obtained with the Hubble Space Telescope, for ~ 15 800 stars in a field in the inner disc of the Large Magellanic Cloud. We confirm previous results indicating that an intense star formation event, probably corresponding to the formation of the LMC disc, occurred a few times 109 yr ago. We find a small but real difference between our field and one further out in the disc observed by Gallagher et al.: either star formation in the inner disc commenced slightly earlier, or the stars are slightly more metal-rich. We also find evidence for a later burst, around 1 Gyr ago, which may correspond to the formation of the LMC bar. About 5 per cent of the stars in our field are substantially older than either burst, and are probably members of an old disc or halo population with age ~ 12 Gyr.application/pdfengMonthly Notices of the Royal Astronomical Society. London. Vol. 289, no. 1 (July 1997), p. 157-168GaláxiasAstrofisica extragalaticaGalaxies: evolutionMagellanic cloudsGalaxies: stellar contentHst observations of the field star population in the large magellanic cloudEstrangeiroinfo: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:UFRGSORIGINAL000210685.pdf000210685.pdfTexto completo (inglês)application/pdf958520http://www.lume.ufrgs.br/bitstream/10183/88738/1/000210685.pdf1aaeb8a339252770e1842e150ba4821dMD51TEXT000210685.pdf.txt000210685.pdf.txtExtracted Texttext/plain41221http://www.lume.ufrgs.br/bitstream/10183/88738/2/000210685.pdf.txt64ba95cc42b8de2646604f6c49295808MD52THUMBNAIL000210685.pdf.jpg000210685.pdf.jpgGenerated Thumbnailimage/jpeg2082http://www.lume.ufrgs.br/bitstream/10183/88738/3/000210685.pdf.jpg039d645f7059e3c4c56728453e03d30bMD5310183/887382023-07-04 03:48:51.112809oai:www.lume.ufrgs.br:10183/88738Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-04T06:48:51Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Hst observations of the field star population in the large magellanic cloud |
title |
Hst observations of the field star population in the large magellanic cloud |
spellingShingle |
Hst observations of the field star population in the large magellanic cloud Elson, Rebecca A.W. Galáxias Astrofisica extragalatica Galaxies: evolution Magellanic clouds Galaxies: stellar content |
title_short |
Hst observations of the field star population in the large magellanic cloud |
title_full |
Hst observations of the field star population in the large magellanic cloud |
title_fullStr |
Hst observations of the field star population in the large magellanic cloud |
title_full_unstemmed |
Hst observations of the field star population in the large magellanic cloud |
title_sort |
Hst observations of the field star population in the large magellanic cloud |
author |
Elson, Rebecca A.W. |
author_facet |
Elson, Rebecca A.W. Gilmore, Gerard Fitzgerald Santiago, Basilio Xavier |
author_role |
author |
author2 |
Gilmore, Gerard Fitzgerald Santiago, Basilio Xavier |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Elson, Rebecca A.W. Gilmore, Gerard Fitzgerald Santiago, Basilio Xavier |
dc.subject.por.fl_str_mv |
Galáxias Astrofisica extragalatica |
topic |
Galáxias Astrofisica extragalatica Galaxies: evolution Magellanic clouds Galaxies: stellar content |
dc.subject.eng.fl_str_mv |
Galaxies: evolution Magellanic clouds Galaxies: stellar content |
description |
We present V and I photometry, obtained with the Hubble Space Telescope, for ~ 15 800 stars in a field in the inner disc of the Large Magellanic Cloud. We confirm previous results indicating that an intense star formation event, probably corresponding to the formation of the LMC disc, occurred a few times 109 yr ago. We find a small but real difference between our field and one further out in the disc observed by Gallagher et al.: either star formation in the inner disc commenced slightly earlier, or the stars are slightly more metal-rich. We also find evidence for a later burst, around 1 Gyr ago, which may correspond to the formation of the LMC bar. About 5 per cent of the stars in our field are substantially older than either burst, and are probably members of an old disc or halo population with age ~ 12 Gyr. |
publishDate |
1997 |
dc.date.issued.fl_str_mv |
1997 |
dc.date.accessioned.fl_str_mv |
2014-03-21T01:48:56Z |
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/10183/88738 |
dc.identifier.issn.pt_BR.fl_str_mv |
0035-8711 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000210685 |
identifier_str_mv |
0035-8711 000210685 |
url |
http://hdl.handle.net/10183/88738 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly Notices of the Royal Astronomical Society. London. Vol. 289, no. 1 (July 1997), p. 157-168 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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