Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/90275 |
Resumo: | We employ the recently installed near-infrared Multi-Conjugate Adaptive Optics demonstrator (MAD) to determine the basic properties of a newly identified, old and distant, Galactic open cluster (FSR 1415). The MAD facility remarkably approaches the diffraction limit, reaching a resolution of 0.07 arcsec (in K), that is also uniform in a field of ~ 1.8 arcmin in diameter. The MAD facility provides photometry that is 50 per cent complete at K ~ 19. This corresponds to about 2.5 mag below the cluster main-sequence turn-off. This high-quality data set allows us to derive an accurate heliocentric distance of 8.6 kpc, a metallicity close to solar and an age of ~ 2.5 Gyr. On the other hand, the deepness of the data allows us to reconstruct (completeness-corrected) mass functions (MFs) indicating a relatively massive cluster, with a flat core MF. The Very Large Telescope/MAD capabilities will therefore provide fundamental data for identifying/analysing other faint and distant open clusters in the Galaxy III and IV quadrants. |
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Momany, YazanOrtolani, SergioBonatto, Charles JoseBica, Eduardo Luiz DamianiBarbuy, Beatriz2014-04-03T01:51:27Z20080035-8711http://hdl.handle.net/10183/90275000673993We employ the recently installed near-infrared Multi-Conjugate Adaptive Optics demonstrator (MAD) to determine the basic properties of a newly identified, old and distant, Galactic open cluster (FSR 1415). The MAD facility remarkably approaches the diffraction limit, reaching a resolution of 0.07 arcsec (in K), that is also uniform in a field of ~ 1.8 arcmin in diameter. The MAD facility provides photometry that is 50 per cent complete at K ~ 19. This corresponds to about 2.5 mag below the cluster main-sequence turn-off. This high-quality data set allows us to derive an accurate heliocentric distance of 8.6 kpc, a metallicity close to solar and an age of ~ 2.5 Gyr. On the other hand, the deepness of the data allows us to reconstruct (completeness-corrected) mass functions (MFs) indicating a relatively massive cluster, with a flat core MF. The Very Large Telescope/MAD capabilities will therefore provide fundamental data for identifying/analysing other faint and distant open clusters in the Galaxy III and IV quadrants.application/pdfengMonthly notices of the royal astronomical society. Oxford. Vol. 391, no. 4 (Dec. 2008), p. 1650-1658Aglomerados abertos e associaçõesPopulacoes estelaresAglomerado aberto FSR 1415Instrumentacao astronomicaFotometria astronômicaEstrelasInstrumentation: adaptive opticsTechniques: photometricStars: Population IIOpen clusters and associations: individual: FSR 1415Infrared: starsMulti-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415Estrangeiroinfo: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:UFRGSORIGINAL000673993.pdf000673993.pdfTexto completo (inglês)application/pdf5339740http://www.lume.ufrgs.br/bitstream/10183/90275/1/000673993.pdfd5e56d297007aecdc454f2ba072c8ee8MD51TEXT000673993.pdf.txt000673993.pdf.txtExtracted Texttext/plain44555http://www.lume.ufrgs.br/bitstream/10183/90275/2/000673993.pdf.txt32900ee73f09a272fd425f1b9cdae665MD52THUMBNAIL000673993.pdf.jpg000673993.pdf.jpgGenerated Thumbnailimage/jpeg2093http://www.lume.ufrgs.br/bitstream/10183/90275/3/000673993.pdf.jpg7d7b1ad62d28f4e08ec112b806912cf3MD5310183/902752023-07-15 03:28:54.714581oai:www.lume.ufrgs.br:10183/90275Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-15T06:28:54Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
title |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
spellingShingle |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 Momany, Yazan Aglomerados abertos e associações Populacoes estelares Aglomerado aberto FSR 1415 Instrumentacao astronomica Fotometria astronômica Estrelas Instrumentation: adaptive optics Techniques: photometric Stars: Population II Open clusters and associations: individual: FSR 1415 Infrared: stars |
title_short |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
title_full |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
title_fullStr |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
title_full_unstemmed |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
title_sort |
Multi-conjugate adaptive optics VLT imaging of the distant old open cluster FSR 1415 |
author |
Momany, Yazan |
author_facet |
Momany, Yazan Ortolani, Sergio Bonatto, Charles Jose Bica, Eduardo Luiz Damiani Barbuy, Beatriz |
author_role |
author |
author2 |
Ortolani, Sergio Bonatto, Charles Jose Bica, Eduardo Luiz Damiani Barbuy, Beatriz |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Momany, Yazan Ortolani, Sergio Bonatto, Charles Jose Bica, Eduardo Luiz Damiani Barbuy, Beatriz |
dc.subject.por.fl_str_mv |
Aglomerados abertos e associações Populacoes estelares Aglomerado aberto FSR 1415 Instrumentacao astronomica Fotometria astronômica Estrelas |
topic |
Aglomerados abertos e associações Populacoes estelares Aglomerado aberto FSR 1415 Instrumentacao astronomica Fotometria astronômica Estrelas Instrumentation: adaptive optics Techniques: photometric Stars: Population II Open clusters and associations: individual: FSR 1415 Infrared: stars |
dc.subject.eng.fl_str_mv |
Instrumentation: adaptive optics Techniques: photometric Stars: Population II Open clusters and associations: individual: FSR 1415 Infrared: stars |
description |
We employ the recently installed near-infrared Multi-Conjugate Adaptive Optics demonstrator (MAD) to determine the basic properties of a newly identified, old and distant, Galactic open cluster (FSR 1415). The MAD facility remarkably approaches the diffraction limit, reaching a resolution of 0.07 arcsec (in K), that is also uniform in a field of ~ 1.8 arcmin in diameter. The MAD facility provides photometry that is 50 per cent complete at K ~ 19. This corresponds to about 2.5 mag below the cluster main-sequence turn-off. This high-quality data set allows us to derive an accurate heliocentric distance of 8.6 kpc, a metallicity close to solar and an age of ~ 2.5 Gyr. On the other hand, the deepness of the data allows us to reconstruct (completeness-corrected) mass functions (MFs) indicating a relatively massive cluster, with a flat core MF. The Very Large Telescope/MAD capabilities will therefore provide fundamental data for identifying/analysing other faint and distant open clusters in the Galaxy III and IV quadrants. |
publishDate |
2008 |
dc.date.issued.fl_str_mv |
2008 |
dc.date.accessioned.fl_str_mv |
2014-04-03T01:51:27Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
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article |
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publishedVersion |
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http://hdl.handle.net/10183/90275 |
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0035-8711 |
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000673993 |
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url |
http://hdl.handle.net/10183/90275 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Monthly notices of the royal astronomical society. Oxford. Vol. 391, no. 4 (Dec. 2008), p. 1650-1658 |
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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