OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary

The mass function and statistics of binaries provide important diagnostics of the star formation process. Despite this importance, the mass function at low masses remains poorly known due to observational difficulties caused by the faintness of the objects. Here we report the microlensing discovery...

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Detalles Bibliográficos
Autores: Hwang, K., Pietrzynski, G.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2010
País:Chile
Idioma:inglés
OAI Identifier:oai:repositorio.anid.cl:10533/237154
Acceso en línea:https://hdl.handle.net/10533/237154
Access Level:acceso abierto
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spelling Pietrzynski, G.Hwang, K.201010.1088/0004-637X/723/1/797https://hdl.handle.net/10533/237154http://purl.org/coar/access_right/c_abf2OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass BinaryHwang, K.Pietrzynski, G.2019-12-18T18:14:53Z2022-07-07T22:05:21Z2019-12-18T18:14:53Z2022-07-07T22:05:21Z2010The mass function and statistics of binaries provide important diagnostics of the star formation process. Despite this importance, the mass function at low masses remains poorly known due to observational difficulties caused by the faintness of the objects. Here we report the microlensing discovery and characterization of a binary lens composed of very low-mass stars just above the hydrogen-burning limit. From the combined measurements of the Einstein radius and microlens parallax, we measure the masses of the binary components of 0.10±0.01 M⊙ and 0.09±0.01 M⊙. This discovery demonstrates that microlensing will provide a method to measure the mass function of all Galactic populations of very low mass binaries that is independent of the biases caused by the luminosity of the population.FONDAPFONDAP1501000315010003virtual::26938-1WOS:000284090100069https://hdl.handle.net/10533/237154enginstname: Conicytreponame: Repositorio Digital RI2.010.1088/0004-637X/723/1/797info:eu-repo/grantAgreement/Fondap/15010003https://arxiv.org/abs/1009.0344Atribución-NoComercial-SinDerivadas 3.0 Chilehttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/info:eu-repo/semantics/openAccessOGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass BinaryAstrophysical JournalArticuloinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttps://hdl.handle.net/10533/237154http://purl.org/coar/resource_type/c_2df8fbb1045fc0e1-ef55-4532-8afe-69fe789d964dvirtual::26938-1045fc0e1-ef55-4532-8afe-69fe789d964dvirtual::26938-110533/237154oai:repositorio.anid.cl:10533/2371542023-07-24 21:03:24.189https://repositorio.anid.clRepositorio ANIDaletelier@anid.cl
dc.title.none.fl_str_mv OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
dc.title.journal.none.fl_str_mv Astrophysical Journal
title OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
spellingShingle OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
Hwang, K.
title_short OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
title_full OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
title_fullStr OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
title_full_unstemmed OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
title_sort OGLE-2005-BLG-153: Microlensing Discovery and Characterization of a Very Low Mass Binary
dc.creator.none.fl_str_mv Hwang, K.
Pietrzynski, G.
author Hwang, K.
author_facet Hwang, K.
Pietrzynski, G.
author_role author
author2 Pietrzynski, G.
author2_role author
description The mass function and statistics of binaries provide important diagnostics of the star formation process. Despite this importance, the mass function at low masses remains poorly known due to observational difficulties caused by the faintness of the objects. Here we report the microlensing discovery and characterization of a binary lens composed of very low-mass stars just above the hydrogen-burning limit. From the combined measurements of the Einstein radius and microlens parallax, we measure the masses of the binary components of 0.10±0.01 M⊙ and 0.09±0.01 M⊙. This discovery demonstrates that microlensing will provide a method to measure the mass function of all Galactic populations of very low mass binaries that is independent of the biases caused by the luminosity of the population.
publishDate 2010
dc.date.issued.none.fl_str_mv 2010
dc.date.accessioned.none.fl_str_mv 2019-12-18T18:14:53Z
2022-07-07T22:05:21Z
dc.date.available.none.fl_str_mv 2019-12-18T18:14:53Z
2022-07-07T22:05:21Z
dc.type.none.fl_str_mv Articulo
dc.type.driver.none.fl_str_mv info:eu-repo/semantics/article
dc.type.openaire.none.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.folio.none.fl_str_mv 15010003
15010003
dc.identifier.idwos.none.fl_str_mv WOS:000284090100069
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10533/237154
identifier_str_mv 15010003
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url https://hdl.handle.net/10533/237154
dc.language.iso.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv instname: Conicyt
reponame: Repositorio Digital RI2.0
dc.relation.doi.none.fl_str_mv 10.1088/0004-637X/723/1/797
dc.relation.projectid.none.fl_str_mv info:eu-repo/grantAgreement/Fondap/15010003
dc.relation.uri.none.fl_str_mv https://arxiv.org/abs/1009.0344
dc.rights.none.fl_str_mv Atribución-NoComercial-SinDerivadas 3.0 Chile
http://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.rights.driver.none.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial-SinDerivadas 3.0 Chile
http://creativecommons.org/licenses/by-nc-nd/3.0/cl/
eu_rights_str_mv openAccess
repository.name.fl_str_mv Repositorio ANID
repository.mail.fl_str_mv aletelier@anid.cl
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