Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/98770 |
Resumo: | An analysis of the candidate embedded stellar systems in the reflection nebulae vdBH-RN 26, vdBH-RN 38, vdBH-RN 53a, GGD 20, ESO 95-RN 18 and NGC 6595 is presented. Optical spectroscopic data from CASLEO (Argentina) in conjunction with near infrared photometry from the 2MASS Point Source Catalogue were employed. The analysis is based on source surface density, colour–colour and colour–magnitude diagrams together with theoretical pre-main sequence isochrones. We take into account the field population affecting the analysis by carrying out a statistical subtraction. The fundamental parameters for the stellar systems were derived. The resulting ages are in the range 1−4 Myr and the objects are dominated by pre-main sequence stars. The observed masses locked in the clusters are less than 25 Mʘ. The studied systems have no stars of spectral types earlier than B, indicating that star clusters do not necessarily evolve through an HII region phase. The relatively small locked mass combined with the fact that they are not numerous in catalogues suggests that these low mass clusters are not important donors of stars to the field populations. |
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Soares, Jules BatistaBica, Eduardo Luiz DamianiAhumada, Andrea VeronicaClaria Olmedo, Juan Jose2014-07-26T02:09:19Z20050004-6361http://hdl.handle.net/10183/98770000537019An analysis of the candidate embedded stellar systems in the reflection nebulae vdBH-RN 26, vdBH-RN 38, vdBH-RN 53a, GGD 20, ESO 95-RN 18 and NGC 6595 is presented. Optical spectroscopic data from CASLEO (Argentina) in conjunction with near infrared photometry from the 2MASS Point Source Catalogue were employed. The analysis is based on source surface density, colour–colour and colour–magnitude diagrams together with theoretical pre-main sequence isochrones. We take into account the field population affecting the analysis by carrying out a statistical subtraction. The fundamental parameters for the stellar systems were derived. The resulting ages are in the range 1−4 Myr and the objects are dominated by pre-main sequence stars. The observed masses locked in the clusters are less than 25 Mʘ. The studied systems have no stars of spectral types earlier than B, indicating that star clusters do not necessarily evolve through an HII region phase. The relatively small locked mass combined with the fact that they are not numerous in catalogues suggests that these low mass clusters are not important donors of stars to the field populations.application/pdfengAstronomy and astrophysics. Les Ulis. Vol. 430, no. 3 (Feb. 2005), p. 987-996Aglomerados abertos e associaçõesNebulosasEstrelas pré-seqüência principalAglomerados estelaresEvolucao estelarFotometria estelarOpen clusters and associations: individual: GGD 20Open clusters and associations: individual: vdBH-RN 26Open clusters and associations: individual: vdBH-RN 38Open clusters and associations: individual: vdBH-RN 53aOpen clusters and associations: individual: ESO95-RN 18Open clusters and associations: individual: NGC6595Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulaeEstrangeiroinfo: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:UFRGSORIGINAL000537019.pdf000537019.pdfTexto completo (inglês)application/pdf572230http://www.lume.ufrgs.br/bitstream/10183/98770/1/000537019.pdf452fb4d4081ef5cd128b4601a24f8ea7MD51TEXT000537019.pdf.txt000537019.pdf.txtExtracted Texttext/plain37576http://www.lume.ufrgs.br/bitstream/10183/98770/2/000537019.pdf.txt792028d34016e0a7922b722718fed4ccMD52THUMBNAIL000537019.pdf.jpg000537019.pdf.jpgGenerated Thumbnailimage/jpeg2101http://www.lume.ufrgs.br/bitstream/10183/98770/3/000537019.pdf.jpgf4e0ba464e16b4c795668af380e43633MD5310183/987702024-04-12 06:20:16.413928oai:www.lume.ufrgs.br:10183/98770Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2024-04-12T09:20:16Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
title |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
spellingShingle |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae Soares, Jules Batista Aglomerados abertos e associações Nebulosas Estrelas pré-seqüência principal Aglomerados estelares Evolucao estelar Fotometria estelar Open clusters and associations: individual: GGD 20 Open clusters and associations: individual: vdBH-RN 26 Open clusters and associations: individual: vdBH-RN 38 Open clusters and associations: individual: vdBH-RN 53a Open clusters and associations: individual: ESO95-RN 18 Open clusters and associations: individual: NGC6595 |
title_short |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
title_full |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
title_fullStr |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
title_full_unstemmed |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
title_sort |
Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae |
author |
Soares, Jules Batista |
author_facet |
Soares, Jules Batista Bica, Eduardo Luiz Damiani Ahumada, Andrea Veronica Claria Olmedo, Juan Jose |
author_role |
author |
author2 |
Bica, Eduardo Luiz Damiani Ahumada, Andrea Veronica Claria Olmedo, Juan Jose |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Soares, Jules Batista Bica, Eduardo Luiz Damiani Ahumada, Andrea Veronica Claria Olmedo, Juan Jose |
dc.subject.por.fl_str_mv |
Aglomerados abertos e associações Nebulosas Estrelas pré-seqüência principal Aglomerados estelares Evolucao estelar Fotometria estelar |
topic |
Aglomerados abertos e associações Nebulosas Estrelas pré-seqüência principal Aglomerados estelares Evolucao estelar Fotometria estelar Open clusters and associations: individual: GGD 20 Open clusters and associations: individual: vdBH-RN 26 Open clusters and associations: individual: vdBH-RN 38 Open clusters and associations: individual: vdBH-RN 53a Open clusters and associations: individual: ESO95-RN 18 Open clusters and associations: individual: NGC6595 |
dc.subject.eng.fl_str_mv |
Open clusters and associations: individual: GGD 20 Open clusters and associations: individual: vdBH-RN 26 Open clusters and associations: individual: vdBH-RN 38 Open clusters and associations: individual: vdBH-RN 53a Open clusters and associations: individual: ESO95-RN 18 Open clusters and associations: individual: NGC6595 |
description |
An analysis of the candidate embedded stellar systems in the reflection nebulae vdBH-RN 26, vdBH-RN 38, vdBH-RN 53a, GGD 20, ESO 95-RN 18 and NGC 6595 is presented. Optical spectroscopic data from CASLEO (Argentina) in conjunction with near infrared photometry from the 2MASS Point Source Catalogue were employed. The analysis is based on source surface density, colour–colour and colour–magnitude diagrams together with theoretical pre-main sequence isochrones. We take into account the field population affecting the analysis by carrying out a statistical subtraction. The fundamental parameters for the stellar systems were derived. The resulting ages are in the range 1−4 Myr and the objects are dominated by pre-main sequence stars. The observed masses locked in the clusters are less than 25 Mʘ. The studied systems have no stars of spectral types earlier than B, indicating that star clusters do not necessarily evolve through an HII region phase. The relatively small locked mass combined with the fact that they are not numerous in catalogues suggests that these low mass clusters are not important donors of stars to the field populations. |
publishDate |
2005 |
dc.date.issued.fl_str_mv |
2005 |
dc.date.accessioned.fl_str_mv |
2014-07-26T02:09:19Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
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article |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/98770 |
dc.identifier.issn.pt_BR.fl_str_mv |
0004-6361 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000537019 |
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0004-6361 000537019 |
url |
http://hdl.handle.net/10183/98770 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Astronomy and astrophysics. Les Ulis. Vol. 430, no. 3 (Feb. 2005), p. 987-996 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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