Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)

Autores
Piatti, Andres Eduardo; Carballo-Bello, Julio A.
Año de publicación
2019
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present results on the stellar density radial profile of the outer regions of NGC6779, a Milky Way globular cluster recently proposed as a candidate member of the Gaia Sausage structure, a merger remnant of a massive dwarf galaxy with the Milky Way.Taking advantage of the Pan-STARRS PS1 public astrometric and photometric catalogue,we built the radial profile for the outermost cluster regions using horizontal branch and main sequence stars, separately,  in order to probe for different profile trends because of difference stellar masses. Owing to its relatively close location to the Galactic plane, we have carefully treatedthe chosen colour-magnitude regions properly correcting them by the amount ofinterstellar extinction measured along the line-of-side of each star, as well as cleaned themfrom the variable field star contamination observed across the cluster field.  In the region spanning from the tidal to the Jacobi radii the resulting radial profiles show a diffuseextended halo, with an average power law slope of -1. While analysingthe relationships between the Galactocentric distance, the half-mass density, the half-lightradius, the slope of the radial profile of the outermost regions, the internal dynamical evolutionarystage, among others, we found that NGC6779 shows structural properties similar to those of the remaining  Gaia  Sausage candidate globular clusters, namely, they are massive clusters  (>10^5Mo) in a moderately early dynamical evolutionary stage, with  observed extra-tidal structures.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Carballo-Bello, Julio A.. Universidad Católica de Chile; Chile
Materia
Globular cluster
Photometrics
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/112330
Acceder
id CONICETDig_a41c176eccb962b96e0761b45ff55145
oai_identifier_str oai:ri.conicet.gov.ar:11336/112330
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)Piatti, Andres EduardoCarballo-Bello, Julio A.Globular clusterPhotometricshttps://purl.org/becyt/ford/1.7https://purl.org/becyt/ford/1We present results on the stellar density radial profile of the outer regions of NGC6779, a Milky Way globular cluster recently proposed as a candidate member of the Gaia Sausage structure, a merger remnant of a massive dwarf galaxy with the Milky Way.Taking advantage of the Pan-STARRS PS1 public astrometric and photometric catalogue,we built the radial profile for the outermost cluster regions using horizontal branch and main sequence stars, separately,  in order to probe for different profile trends because of difference stellar masses. Owing to its relatively close location to the Galactic plane, we have carefully treatedthe chosen colour-magnitude regions properly correcting them by the amount ofinterstellar extinction measured along the line-of-side of each star, as well as cleaned themfrom the variable field star contamination observed across the cluster field.  In the region spanning from the tidal to the Jacobi radii the resulting radial profiles show a diffuseextended halo, with an average power law slope of -1. While analysingthe relationships between the Galactocentric distance, the half-mass density, the half-lightradius, the slope of the radial profile of the outermost regions, the internal dynamical evolutionarystage, among others, we found that NGC6779 shows structural properties similar to those of the remaining  Gaia  Sausage candidate globular clusters, namely, they are massive clusters  (>10^5Mo) in a moderately early dynamical evolutionary stage, with  observed extra-tidal structures.Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Carballo-Bello, Julio A.. Universidad Católica de Chile; ChileWiley Blackwell Publishing, Inc2019-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/112330Piatti, Andres Eduardo; Carballo-Bello, Julio A.; Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56); Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 485; 1; 5-2019; 1029-10350035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/485/1/1029/5342085info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz500info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:11:06Zoai:ri.conicet.gov.ar:11336/112330instacron: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:34982025-10-22 11:11:06.847CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
title Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
spellingShingle Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
Piatti, Andres Eduardo
Globular cluster
Photometrics
title_short Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
title_full Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
title_fullStr Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
title_full_unstemmed Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
title_sort Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56)
dc.creator.none.fl_str_mv Piatti, Andres Eduardo
Carballo-Bello, Julio A.
author Piatti, Andres Eduardo
author_facet Piatti, Andres Eduardo
Carballo-Bello, Julio A.
author_role author
author2 Carballo-Bello, Julio A.
author2_role author
dc.subject.none.fl_str_mv Globular cluster
Photometrics
topic Globular cluster
Photometrics
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.7
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present results on the stellar density radial profile of the outer regions of NGC6779, a Milky Way globular cluster recently proposed as a candidate member of the Gaia Sausage structure, a merger remnant of a massive dwarf galaxy with the Milky Way.Taking advantage of the Pan-STARRS PS1 public astrometric and photometric catalogue,we built the radial profile for the outermost cluster regions using horizontal branch and main sequence stars, separately,  in order to probe for different profile trends because of difference stellar masses. Owing to its relatively close location to the Galactic plane, we have carefully treatedthe chosen colour-magnitude regions properly correcting them by the amount ofinterstellar extinction measured along the line-of-side of each star, as well as cleaned themfrom the variable field star contamination observed across the cluster field.  In the region spanning from the tidal to the Jacobi radii the resulting radial profiles show a diffuseextended halo, with an average power law slope of -1. While analysingthe relationships between the Galactocentric distance, the half-mass density, the half-lightradius, the slope of the radial profile of the outermost regions, the internal dynamical evolutionarystage, among others, we found that NGC6779 shows structural properties similar to those of the remaining  Gaia  Sausage candidate globular clusters, namely, they are massive clusters  (>10^5Mo) in a moderately early dynamical evolutionary stage, with  observed extra-tidal structures.
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Cuyo; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Carballo-Bello, Julio A.. Universidad Católica de Chile; Chile
description We present results on the stellar density radial profile of the outer regions of NGC6779, a Milky Way globular cluster recently proposed as a candidate member of the Gaia Sausage structure, a merger remnant of a massive dwarf galaxy with the Milky Way.Taking advantage of the Pan-STARRS PS1 public astrometric and photometric catalogue,we built the radial profile for the outermost cluster regions using horizontal branch and main sequence stars, separately,  in order to probe for different profile trends because of difference stellar masses. Owing to its relatively close location to the Galactic plane, we have carefully treatedthe chosen colour-magnitude regions properly correcting them by the amount ofinterstellar extinction measured along the line-of-side of each star, as well as cleaned themfrom the variable field star contamination observed across the cluster field.  In the region spanning from the tidal to the Jacobi radii the resulting radial profiles show a diffuseextended halo, with an average power law slope of -1. While analysingthe relationships between the Galactocentric distance, the half-mass density, the half-lightradius, the slope of the radial profile of the outermost regions, the internal dynamical evolutionarystage, among others, we found that NGC6779 shows structural properties similar to those of the remaining  Gaia  Sausage candidate globular clusters, namely, they are massive clusters  (>10^5Mo) in a moderately early dynamical evolutionary stage, with  observed extra-tidal structures.
publishDate 2019
dc.date.none.fl_str_mv 2019-05
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/11336/112330
Piatti, Andres Eduardo; Carballo-Bello, Julio A.; Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56); Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 485; 1; 5-2019; 1029-1035
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/112330
identifier_str_mv Piatti, Andres Eduardo; Carballo-Bello, Julio A.; Extra-tidal structures around the Gaia Sausage candidate globular cluster NGC 6779 (M56); Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 485; 1; 5-2019; 1029-1035
0035-8711
1365-2966
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/485/1/1029/5342085
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stz500
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
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
_version_ 1846781482724491264
score 12.982451

Publicaciones similares