Deep colour-magnitude diagrams of LMC field stars imaged with HST
Autor(a) principal: | |
---|---|
Data de Publicação: | 2001 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/90254 |
Resumo: | We present deep photometry V < ~26 in V and I bands obtained with the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope for 7 fields ~5◦ away from the Large Magellanic Cloud centre. The fields contain, typically, 2000 stars each. Isochrones were fitted to the colour–magnitude diagrams in order to identify different star populations in these fields. An old population (t > 10 Gyr) has been found in all fields. Some events of enhanced star formation, with ages between 2 and 4 Gyr, were identified in the fields localized in the north to north-west regions. Luminosity functions of low-mass stars were also obtained for all fields. Kolmogorov Smirnov test results suggest differences smaller than 30 per cent in the mixture of stellar populations contributing to the fields. Finally, density profiles were derived for old and intermediate-age stars. The former shows a slightly steeper decline than the latter. |
id |
UFRGS-2_e18965c732cde3bf21b80c0ba2a72b85 |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/90254 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Castro, RodrigoSantiago, Basilio XavierGilmore, Gerard FitzgeraldBeaulieu, Sylvie F.Johnson, Rachel A.2014-04-03T01:51:22Z20010035-8711http://hdl.handle.net/10183/90254000563543We present deep photometry
V < ~26 in V and I bands obtained with the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope for 7 fields ~5◦ away from the Large Magellanic Cloud centre. The fields contain, typically, 2000 stars each. Isochrones were fitted to the colour–magnitude diagrams in order to identify different star populations in these fields. An old population
(t > 10 Gyr) has been found in all fields. Some events of enhanced star formation, with ages between 2 and 4 Gyr, were identified in the fields localized in the north to north-west regions. Luminosity functions of low-mass stars were also obtained for all fields. Kolmogorov Smirnov test results suggest differences smaller than 30 per cent in the mixture of stellar populations contributing to the fields. Finally, density profiles were derived for old and intermediate-age stars. The former shows a slightly steeper decline than the latter.application/pdfengMonthly Notices of the Royal Astronomical Society. London. Vol. 326, no. 1 (Sept. 2001), p. 333-341Astrofisica extragalaticaAstrofísicaStars: statisticsGalaxies: evolutionGalaxies: structureDeep colour-magnitude diagrams of LMC field stars imaged with HSTEstrangeiroinfo: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:UFRGSORIGINAL000563543.pdf000563543.pdfTexto completo (inglês)application/pdf660293http://www.lume.ufrgs.br/bitstream/10183/90254/1/000563543.pdfa3daf6357b5b268ad5c573942812a43cMD51TEXT000563543.pdf.txt000563543.pdf.txtExtracted Texttext/plain36734http://www.lume.ufrgs.br/bitstream/10183/90254/2/000563543.pdf.txt9717bb10bec097b19b35c292b30900e9MD52THUMBNAIL000563543.pdf.jpg000563543.pdf.jpgGenerated Thumbnailimage/jpeg1828http://www.lume.ufrgs.br/bitstream/10183/90254/3/000563543.pdf.jpg2590c579363e0f3dcef365ee5bf9c4d6MD5310183/902542023-07-04 03:50:47.033325oai:www.lume.ufrgs.br:10183/90254Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-04T06:50:47Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
title |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
spellingShingle |
Deep colour-magnitude diagrams of LMC field stars imaged with HST Castro, Rodrigo Astrofisica extragalatica Astrofísica Stars: statistics Galaxies: evolution Galaxies: structure |
title_short |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
title_full |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
title_fullStr |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
title_full_unstemmed |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
title_sort |
Deep colour-magnitude diagrams of LMC field stars imaged with HST |
author |
Castro, Rodrigo |
author_facet |
Castro, Rodrigo Santiago, Basilio Xavier Gilmore, Gerard Fitzgerald Beaulieu, Sylvie F. Johnson, Rachel A. |
author_role |
author |
author2 |
Santiago, Basilio Xavier Gilmore, Gerard Fitzgerald Beaulieu, Sylvie F. Johnson, Rachel A. |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Castro, Rodrigo Santiago, Basilio Xavier Gilmore, Gerard Fitzgerald Beaulieu, Sylvie F. Johnson, Rachel A. |
dc.subject.por.fl_str_mv |
Astrofisica extragalatica Astrofísica |
topic |
Astrofisica extragalatica Astrofísica Stars: statistics Galaxies: evolution Galaxies: structure |
dc.subject.eng.fl_str_mv |
Stars: statistics Galaxies: evolution Galaxies: structure |
description |
We present deep photometry
V < ~26 in V and I bands obtained with the Wide Field and Planetary Camera 2 on board the Hubble Space Telescope for 7 fields ~5◦ away from the Large Magellanic Cloud centre. The fields contain, typically, 2000 stars each. Isochrones were fitted to the colour–magnitude diagrams in order to identify different star populations in these fields. An old population
(t > 10 Gyr) has been found in all fields. Some events of enhanced star formation, with ages between 2 and 4 Gyr, were identified in the fields localized in the north to north-west regions. Luminosity functions of low-mass stars were also obtained for all fields. Kolmogorov Smirnov test results suggest differences smaller than 30 per cent in the mixture of stellar populations contributing to the fields. Finally, density profiles were derived for old and intermediate-age stars. The former shows a slightly steeper decline than the latter. |
publishDate |
2001 |
dc.date.issued.fl_str_mv |
2001 |
dc.date.accessioned.fl_str_mv |
2014-04-03T01:51:22Z |
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/10183/90254 |
dc.identifier.issn.pt_BR.fl_str_mv |
0035-8711 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000563543 |
identifier_str_mv |
0035-8711 000563543 |
url |
http://hdl.handle.net/10183/90254 |
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. 326, no. 1 (Sept. 2001), p. 333-341 |
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/10183/90254/1/000563543.pdf http://www.lume.ufrgs.br/bitstream/10183/90254/2/000563543.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/90254/3/000563543.pdf.jpg |
bitstream.checksum.fl_str_mv |
a3daf6357b5b268ad5c573942812a43c 9717bb10bec097b19b35c292b30900e9 2590c579363e0f3dcef365ee5bf9c4d6 |
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_ |
1801224830428643328 |