High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager
- Autores
- García, Luciano Héctor; Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gomez, Mercedes Nieves
- Año de publicación
- 2022
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Based on high contrast images obtained with the Gemini Planet Imager (GPI), we report the discovery of two point-like sources at angular separations of ∼ 0.1800 and ∼ 0.8000 from the stars HD 29992 and HD 196385. A combined analysis of the new GPI observations and images from the literature indicates that the source close to HD 29992 could be a companion to the star. Concerning HD 196385, the small number of contaminants (∼ 0.5) suggests that the detected source may be gravitationally bound to the star. For both systems, we discarded the presence of other potential companions with > 75 MJup at ∼ 0.3−1.3 00. From stellar model atmospheres and low-resolution GPI spectra, we derive masses of ∼ 0.2 - 0.3 M for these sources. Using a Markov-chain Monte Carlo approach, we performed a joint fit of the new astrometry measurements and published radial velocity data to characterize the possible orbits. For HD 196385B, the median dynamic mass is in agreement with that derived from model atmospheres, whilst for HD 29992B, the orbital fit favors masses close to the brown dwarf regime(∼ 0.08 M). HD 29992 and HD 196385 might be two new binary systems with M-type stellar companions. However, new high angular resolution images would help to definitively confirm whether the detected sources are gravitationally bound to their respective stars, and permittighter constraints on the orbital parameters of both systems.
Fil: García, Luciano Héctor. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Petrucci, Romina Paola. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina
Fil: Jofre, Jorge Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Gomez, Mercedes Nieves. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina - Materia
-
VISUAL BINARIES
HIGH ANGULAR RESOLUTION
IMAGING
LOW MASS STARS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/222388
Ver los metadatos del registro completo
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High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet ImagerGarcía, Luciano HéctorPetrucci, Romina PaolaJofre, Jorge EmilianoGomez, Mercedes NievesVISUAL BINARIESHIGH ANGULAR RESOLUTIONIMAGINGLOW MASS STARShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Based on high contrast images obtained with the Gemini Planet Imager (GPI), we report the discovery of two point-like sources at angular separations of ∼ 0.1800 and ∼ 0.8000 from the stars HD 29992 and HD 196385. A combined analysis of the new GPI observations and images from the literature indicates that the source close to HD 29992 could be a companion to the star. Concerning HD 196385, the small number of contaminants (∼ 0.5) suggests that the detected source may be gravitationally bound to the star. For both systems, we discarded the presence of other potential companions with > 75 MJup at ∼ 0.3−1.3 00. From stellar model atmospheres and low-resolution GPI spectra, we derive masses of ∼ 0.2 - 0.3 M for these sources. Using a Markov-chain Monte Carlo approach, we performed a joint fit of the new astrometry measurements and published radial velocity data to characterize the possible orbits. For HD 196385B, the median dynamic mass is in agreement with that derived from model atmospheres, whilst for HD 29992B, the orbital fit favors masses close to the brown dwarf regime(∼ 0.08 M). HD 29992 and HD 196385 might be two new binary systems with M-type stellar companions. However, new high angular resolution images would help to definitively confirm whether the detected sources are gravitationally bound to their respective stars, and permittighter constraints on the orbital parameters of both systems.Fil: García, Luciano Héctor. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Petrucci, Romina Paola. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; ArgentinaFil: Jofre, Jorge Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Gomez, Mercedes Nieves. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaWiley Blackwell Publishing, Inc2022-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/222388García, Luciano Héctor; Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gomez, Mercedes Nieves; High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 10-2022; 1-100035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1929info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:54Zoai:ri.conicet.gov.ar:11336/222388instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:37:55.201CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
title |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
spellingShingle |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager García, Luciano Héctor VISUAL BINARIES HIGH ANGULAR RESOLUTION IMAGING LOW MASS STARS |
title_short |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
title_full |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
title_fullStr |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
title_full_unstemmed |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
title_sort |
High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager |
dc.creator.none.fl_str_mv |
García, Luciano Héctor Petrucci, Romina Paola Jofre, Jorge Emiliano Gomez, Mercedes Nieves |
author |
García, Luciano Héctor |
author_facet |
García, Luciano Héctor Petrucci, Romina Paola Jofre, Jorge Emiliano Gomez, Mercedes Nieves |
author_role |
author |
author2 |
Petrucci, Romina Paola Jofre, Jorge Emiliano Gomez, Mercedes Nieves |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
VISUAL BINARIES HIGH ANGULAR RESOLUTION IMAGING LOW MASS STARS |
topic |
VISUAL BINARIES HIGH ANGULAR RESOLUTION IMAGING LOW MASS STARS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Based on high contrast images obtained with the Gemini Planet Imager (GPI), we report the discovery of two point-like sources at angular separations of ∼ 0.1800 and ∼ 0.8000 from the stars HD 29992 and HD 196385. A combined analysis of the new GPI observations and images from the literature indicates that the source close to HD 29992 could be a companion to the star. Concerning HD 196385, the small number of contaminants (∼ 0.5) suggests that the detected source may be gravitationally bound to the star. For both systems, we discarded the presence of other potential companions with > 75 MJup at ∼ 0.3−1.3 00. From stellar model atmospheres and low-resolution GPI spectra, we derive masses of ∼ 0.2 - 0.3 M for these sources. Using a Markov-chain Monte Carlo approach, we performed a joint fit of the new astrometry measurements and published radial velocity data to characterize the possible orbits. For HD 196385B, the median dynamic mass is in agreement with that derived from model atmospheres, whilst for HD 29992B, the orbital fit favors masses close to the brown dwarf regime(∼ 0.08 M). HD 29992 and HD 196385 might be two new binary systems with M-type stellar companions. However, new high angular resolution images would help to definitively confirm whether the detected sources are gravitationally bound to their respective stars, and permittighter constraints on the orbital parameters of both systems. Fil: García, Luciano Héctor. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Petrucci, Romina Paola. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina Fil: Jofre, Jorge Emiliano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina Fil: Gomez, Mercedes Nieves. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina |
description |
Based on high contrast images obtained with the Gemini Planet Imager (GPI), we report the discovery of two point-like sources at angular separations of ∼ 0.1800 and ∼ 0.8000 from the stars HD 29992 and HD 196385. A combined analysis of the new GPI observations and images from the literature indicates that the source close to HD 29992 could be a companion to the star. Concerning HD 196385, the small number of contaminants (∼ 0.5) suggests that the detected source may be gravitationally bound to the star. For both systems, we discarded the presence of other potential companions with > 75 MJup at ∼ 0.3−1.3 00. From stellar model atmospheres and low-resolution GPI spectra, we derive masses of ∼ 0.2 - 0.3 M for these sources. Using a Markov-chain Monte Carlo approach, we performed a joint fit of the new astrometry measurements and published radial velocity data to characterize the possible orbits. For HD 196385B, the median dynamic mass is in agreement with that derived from model atmospheres, whilst for HD 29992B, the orbital fit favors masses close to the brown dwarf regime(∼ 0.08 M). HD 29992 and HD 196385 might be two new binary systems with M-type stellar companions. However, new high angular resolution images would help to definitively confirm whether the detected sources are gravitationally bound to their respective stars, and permittighter constraints on the orbital parameters of both systems. |
publishDate |
2022 |
dc.date.none.fl_str_mv |
2022-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
format |
article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/222388 García, Luciano Héctor; Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gomez, Mercedes Nieves; High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 10-2022; 1-10 0035-8711 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/222388 |
identifier_str_mv |
García, Luciano Héctor; Petrucci, Romina Paola; Jofre, Jorge Emiliano; Gomez, Mercedes Nieves; High-contrast imaging of HD 29992 and HD 196385 with the Gemini Planet Imager; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 10-2022; 1-10 0035-8711 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stac1929 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
publisher.none.fl_str_mv |
Wiley Blackwell Publishing, Inc |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1844613197302071296 |
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13.070432 |