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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/112330
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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 Técnicas2025-09-29T09:42:29Zoai: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:34982025-09-29 09:42:29.451CONICET 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 |
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1844613338504364032 |
score |
13.070432 |