FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars

Autores
Minniti, Dante; Palma, Tali; Dékány, Istvan; Hempel, Maren; Rejkuba, Marina; Pullen, Joyce; Alonso-García, Javier; Barba, Rodolfo Hector; Barbuy, Beatriz; Bica, Eduardo; Bonatto, Charles; Borissova, Jura; Catelan, Marcio; Carballo-Bello, Julio A.; Chene, Andre Nicolas; Claria Olmedo, Juan Jose; Cohen, Roger E.; Contreras Ramos, Rodrigo; Dias, Bruno; Emerson, Jim; Froebrich, Dirk; Buckner, Anne S. M.; Geisler, Douglas; Gonzalez, Oscar A.; Gran, Felipe; Hagdu, Gergely; Irwin, Mike; Ivanov, Valentin D.; Kurtev, Radostin; Lucas, Philip W.; Majaess, Daniel; Mauro, Francesco; Moni-Bidin, Christian; Navarrete, Camila; Alegría, Sebastian Ramírez; Saito, Roberto K.; Valenti, Elena; Zoccali, Manuela
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We use deep multi-epoch near-IR images of the VISTA Variables in the Vía Láctea(VVV)Survey to search forRR Lyrae stars toward the Southern Galactic plane. Here, we report the discovery of a group of RR Lyrae starsclose together in VVV tile d025. Inspection of the VVV images and PSF photometry reveals that most of thesestars are likely to belong to a globular cluster that matches the position of the previously known star clusterFSR 1716. The stellar density map of thefield yields a>100σdetection for this candidate globular cluster that iscentered at equatorial coordinates R.A.J2000=16:10:30.0, decl.J2000=−53:44:56 and galactic coordinatesl=329.77812,b=−1.59227. The color–magnitude diagram of this object reveals a well-populated red giantbranch, with a prominent red clump atKs=13.35±0.05, andJ−Ks=1.30±0.05. We present the clusterRR Lyrae positions, magnitudes, colors, periods, and amplitudes. The presence of RR Lyrae indicates an oldglobular cluster, with an age>10 Gyr. We classify this object as an Oosterhoff type I globular cluster, based onthe mean period of its RR Lyrae type ab,áñ=P0.540days, and argue that this is a relatively metal-poor clusterwith[Fe/H]=−1.5±0.4 dex. The mean extinction and reddening for this cluster are=A0.38 0.02KsandE(J−Ks)=0.72±0.02 mag, respectively, as measured from the RR Lyrae colors and the near-IR color–magnitude diagram. We also measure the cluster distance using the RR Lyrae type ab stars. The cluster meandistance modulus is(m−M)0=14.38±0.03 mag, implying a distanceD=7.5±0.2 kpc and aGalactocentric distanceRG=4.3 kpc
Fil: Minniti, Dante. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Palma, Tali. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Dékány, Istvan. Universidad de Heidelberg; Alemania
Fil: Hempel, Maren. Pontificia Universidad Católica de Chile; Chile
Fil: Rejkuba, Marina. Excellence Cluster Universe; Alemania. European Southern Observatory; Alemania
Fil: Pullen, Joyce. Universidad Andrés Bello; Chile
Fil: Alonso-García, Javier. Universidad Andrés Bello; Chile
Fil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Barbuy, Beatriz. Universidade de Sao Paulo; Brasil
Fil: Bica, Eduardo. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Bonatto, Charles. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Borissova, Jura. Universidad Andrés Bello; Chile
Fil: Catelan, Marcio. Universidad Andrés Bello; Chile. Pontificia Universidad Católica de Chile; Chile
Fil: Carballo-Bello, Julio A.. Pontificia Universidad Católica de Chile; Chile. Universidad Andrés Bello; Chile
Fil: Chene, Andre Nicolas. Northern Operations Center. Gemini Observatory; Estados Unidos
Fil: Claria Olmedo, Juan Jose. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Cohen, Roger E.. Universidad de Concepción; Chile
Fil: Contreras Ramos, Rodrigo. Pontificia Universidad Católica de Chile; Chile. Universidad Andrés Bello; Chile
Fil: Dias, Bruno. European Southern Observatory; Chile
Fil: Emerson, Jim. Queen Mary University of London; Reino Unido
Fil: Froebrich, Dirk. University Of Kent; Reino Unido. European Southern Observatory; Chile
Fil: Buckner, Anne S. M.. University Of Kent; Reino Unido
Fil: Geisler, Douglas. Universidad de Concepción; Chile
Fil: Gonzalez, Oscar A.. Royal Observatory. UK Astronomy Technology Centre; Reino Unido. European Southern Observatory; Chile
Fil: Gran, Felipe. Pontificia Universidad Católica de Chile; Chile
Fil: Hagdu, Gergely. Pontificia Universidad Católica de Chile; Chile
Fil: Irwin, Mike. University of Cambridge; Reino Unido
Fil: Ivanov, Valentin D.. European Southern Observatory; Chile
Fil: Kurtev, Radostin. Pontificia Universidad Católica de Valparaíso; Chile
Fil: Lucas, Philip W.. University Of Hertfordshire; Reino Unido
Fil: Majaess, Daniel. Mount Saint Vincent University; Canadá
Fil: Mauro, Francesco. Universidad de Concepción; Chile
Fil: Moni-Bidin, Christian. Universidad Católica del Norte; Chile
Fil: Navarrete, Camila. Pontificia Universidad Católica de Chile; Chile
Fil: Alegría, Sebastian Ramírez. Pontificia Universidad Católica de Valparaíso; Chile
Fil: Saito, Roberto K.. Universidade Federal de Santa Catarina; Brasil
Fil: Valenti, Elena. European Southern Observatory; Alemania
Fil: Zoccali, Manuela. Instituto Milenio de Astrofísica; Chile. Pontificia Universidad Católica de Chile; Chile
Materia
Globular cluster
VVV Survey
RR Lyrae
Milky Way
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:11336/76842

id CONICETDig_e84a70baf6ba46bb7e71a7ba57282b2c
oai_identifier_str oai:ri.conicet.gov.ar:11336/76842
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae StarsMinniti, DantePalma, TaliDékány, IstvanHempel, MarenRejkuba, MarinaPullen, JoyceAlonso-García, JavierBarba, Rodolfo HectorBarbuy, BeatrizBica, EduardoBonatto, CharlesBorissova, JuraCatelan, MarcioCarballo-Bello, Julio A.Chene, Andre NicolasClaria Olmedo, Juan JoseCohen, Roger E.Contreras Ramos, RodrigoDias, BrunoEmerson, JimFroebrich, DirkBuckner, Anne S. M.Geisler, DouglasGonzalez, Oscar A.Gran, FelipeHagdu, GergelyIrwin, MikeIvanov, Valentin D.Kurtev, RadostinLucas, Philip W.Majaess, DanielMauro, FrancescoMoni-Bidin, ChristianNavarrete, CamilaAlegría, Sebastian RamírezSaito, Roberto K.Valenti, ElenaZoccali, ManuelaGlobular clusterVVV SurveyRR LyraeMilky WayWe use deep multi-epoch near-IR images of the VISTA Variables in the Vía Láctea(VVV)Survey to search forRR Lyrae stars toward the Southern Galactic plane. Here, we report the discovery of a group of RR Lyrae starsclose together in VVV tile d025. Inspection of the VVV images and PSF photometry reveals that most of thesestars are likely to belong to a globular cluster that matches the position of the previously known star clusterFSR 1716. The stellar density map of thefield yields a>100σdetection for this candidate globular cluster that iscentered at equatorial coordinates R.A.J2000=16:10:30.0, decl.J2000=−53:44:56 and galactic coordinatesl=329.77812,b=−1.59227. The color–magnitude diagram of this object reveals a well-populated red giantbranch, with a prominent red clump atKs=13.35±0.05, andJ−Ks=1.30±0.05. We present the clusterRR Lyrae positions, magnitudes, colors, periods, and amplitudes. The presence of RR Lyrae indicates an oldglobular cluster, with an age>10 Gyr. We classify this object as an Oosterhoff type I globular cluster, based onthe mean period of its RR Lyrae type ab,áñ=P0.540days, and argue that this is a relatively metal-poor clusterwith[Fe/H]=−1.5±0.4 dex. The mean extinction and reddening for this cluster are=A0.38 0.02KsandE(J−Ks)=0.72±0.02 mag, respectively, as measured from the RR Lyrae colors and the near-IR color–magnitude diagram. We also measure the cluster distance using the RR Lyrae type ab stars. The cluster meandistance modulus is(m−M)0=14.38±0.03 mag, implying a distanceD=7.5±0.2 kpc and aGalactocentric distanceRG=4.3 kpcFil: Minniti, Dante. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Palma, Tali. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Dékány, Istvan. Universidad de Heidelberg; AlemaniaFil: Hempel, Maren. Pontificia Universidad Católica de Chile; ChileFil: Rejkuba, Marina. Excellence Cluster Universe; Alemania. European Southern Observatory; AlemaniaFil: Pullen, Joyce. Universidad Andrés Bello; ChileFil: Alonso-García, Javier. Universidad Andrés Bello; ChileFil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Barbuy, Beatriz. Universidade de Sao Paulo; BrasilFil: Bica, Eduardo. Universidade Federal do Rio Grande do Sul; BrasilFil: Bonatto, Charles. Universidade Federal do Rio Grande do Sul; BrasilFil: Borissova, Jura. Universidad Andrés Bello; ChileFil: Catelan, Marcio. Universidad Andrés Bello; Chile. Pontificia Universidad Católica de Chile; ChileFil: Carballo-Bello, Julio A.. Pontificia Universidad Católica de Chile; Chile. Universidad Andrés Bello; ChileFil: Chene, Andre Nicolas. Northern Operations Center. Gemini Observatory; Estados UnidosFil: Claria Olmedo, Juan Jose. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Cohen, Roger E.. Universidad de Concepción; ChileFil: Contreras Ramos, Rodrigo. Pontificia Universidad Católica de Chile; Chile. Universidad Andrés Bello; ChileFil: Dias, Bruno. European Southern Observatory; ChileFil: Emerson, Jim. Queen Mary University of London; Reino UnidoFil: Froebrich, Dirk. University Of Kent; Reino Unido. European Southern Observatory; ChileFil: Buckner, Anne S. M.. University Of Kent; Reino UnidoFil: Geisler, Douglas. Universidad de Concepción; ChileFil: Gonzalez, Oscar A.. Royal Observatory. UK Astronomy Technology Centre; Reino Unido. European Southern Observatory; ChileFil: Gran, Felipe. Pontificia Universidad Católica de Chile; ChileFil: Hagdu, Gergely. Pontificia Universidad Católica de Chile; ChileFil: Irwin, Mike. University of Cambridge; Reino UnidoFil: Ivanov, Valentin D.. European Southern Observatory; ChileFil: Kurtev, Radostin. Pontificia Universidad Católica de Valparaíso; ChileFil: Lucas, Philip W.. University Of Hertfordshire; Reino UnidoFil: Majaess, Daniel. Mount Saint Vincent University; CanadáFil: Mauro, Francesco. Universidad de Concepción; ChileFil: Moni-Bidin, Christian. Universidad Católica del Norte; ChileFil: Navarrete, Camila. Pontificia Universidad Católica de Chile; ChileFil: Alegría, Sebastian Ramírez. Pontificia Universidad Católica de Valparaíso; ChileFil: Saito, Roberto K.. Universidade Federal de Santa Catarina; BrasilFil: Valenti, Elena. European Southern Observatory; AlemaniaFil: Zoccali, Manuela. Instituto Milenio de Astrofísica; Chile. Pontificia Universidad Católica de Chile; ChileInstitute of Physics Publishing2017-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/76842Minniti, Dante; Palma, Tali; Dékány, Istvan; Hempel, Maren; Rejkuba, Marina; et al.; FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars; Institute of Physics Publishing; Astrophysical Journal; 838; 1; 3-20172041-82130004-637XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/2041-8213/838/1/L14/metainfo:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/838/1/L14info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:09:14Zoai:ri.conicet.gov.ar:11336/76842instacron: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 10:09:14.668CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
title FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
spellingShingle FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
Minniti, Dante
Globular cluster
VVV Survey
RR Lyrae
Milky Way
title_short FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
title_full FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
title_fullStr FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
title_full_unstemmed FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
title_sort FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars
dc.creator.none.fl_str_mv Minniti, Dante
Palma, Tali
Dékány, Istvan
Hempel, Maren
Rejkuba, Marina
Pullen, Joyce
Alonso-García, Javier
Barba, Rodolfo Hector
Barbuy, Beatriz
Bica, Eduardo
Bonatto, Charles
Borissova, Jura
Catelan, Marcio
Carballo-Bello, Julio A.
Chene, Andre Nicolas
Claria Olmedo, Juan Jose
Cohen, Roger E.
Contreras Ramos, Rodrigo
Dias, Bruno
Emerson, Jim
Froebrich, Dirk
Buckner, Anne S. M.
Geisler, Douglas
Gonzalez, Oscar A.
Gran, Felipe
Hagdu, Gergely
Irwin, Mike
Ivanov, Valentin D.
Kurtev, Radostin
Lucas, Philip W.
Majaess, Daniel
Mauro, Francesco
Moni-Bidin, Christian
Navarrete, Camila
Alegría, Sebastian Ramírez
Saito, Roberto K.
Valenti, Elena
Zoccali, Manuela
author Minniti, Dante
author_facet Minniti, Dante
Palma, Tali
Dékány, Istvan
Hempel, Maren
Rejkuba, Marina
Pullen, Joyce
Alonso-García, Javier
Barba, Rodolfo Hector
Barbuy, Beatriz
Bica, Eduardo
Bonatto, Charles
Borissova, Jura
Catelan, Marcio
Carballo-Bello, Julio A.
Chene, Andre Nicolas
Claria Olmedo, Juan Jose
Cohen, Roger E.
Contreras Ramos, Rodrigo
Dias, Bruno
Emerson, Jim
Froebrich, Dirk
Buckner, Anne S. M.
Geisler, Douglas
Gonzalez, Oscar A.
Gran, Felipe
Hagdu, Gergely
Irwin, Mike
Ivanov, Valentin D.
Kurtev, Radostin
Lucas, Philip W.
Majaess, Daniel
Mauro, Francesco
Moni-Bidin, Christian
Navarrete, Camila
Alegría, Sebastian Ramírez
Saito, Roberto K.
Valenti, Elena
Zoccali, Manuela
author_role author
author2 Palma, Tali
Dékány, Istvan
Hempel, Maren
Rejkuba, Marina
Pullen, Joyce
Alonso-García, Javier
Barba, Rodolfo Hector
Barbuy, Beatriz
Bica, Eduardo
Bonatto, Charles
Borissova, Jura
Catelan, Marcio
Carballo-Bello, Julio A.
Chene, Andre Nicolas
Claria Olmedo, Juan Jose
Cohen, Roger E.
Contreras Ramos, Rodrigo
Dias, Bruno
Emerson, Jim
Froebrich, Dirk
Buckner, Anne S. M.
Geisler, Douglas
Gonzalez, Oscar A.
Gran, Felipe
Hagdu, Gergely
Irwin, Mike
Ivanov, Valentin D.
Kurtev, Radostin
Lucas, Philip W.
Majaess, Daniel
Mauro, Francesco
Moni-Bidin, Christian
Navarrete, Camila
Alegría, Sebastian Ramírez
Saito, Roberto K.
Valenti, Elena
Zoccali, Manuela
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Globular cluster
VVV Survey
RR Lyrae
Milky Way
topic Globular cluster
VVV Survey
RR Lyrae
Milky Way
dc.description.none.fl_txt_mv We use deep multi-epoch near-IR images of the VISTA Variables in the Vía Láctea(VVV)Survey to search forRR Lyrae stars toward the Southern Galactic plane. Here, we report the discovery of a group of RR Lyrae starsclose together in VVV tile d025. Inspection of the VVV images and PSF photometry reveals that most of thesestars are likely to belong to a globular cluster that matches the position of the previously known star clusterFSR 1716. The stellar density map of thefield yields a>100σdetection for this candidate globular cluster that iscentered at equatorial coordinates R.A.J2000=16:10:30.0, decl.J2000=−53:44:56 and galactic coordinatesl=329.77812,b=−1.59227. The color–magnitude diagram of this object reveals a well-populated red giantbranch, with a prominent red clump atKs=13.35±0.05, andJ−Ks=1.30±0.05. We present the clusterRR Lyrae positions, magnitudes, colors, periods, and amplitudes. The presence of RR Lyrae indicates an oldglobular cluster, with an age>10 Gyr. We classify this object as an Oosterhoff type I globular cluster, based onthe mean period of its RR Lyrae type ab,áñ=P0.540days, and argue that this is a relatively metal-poor clusterwith[Fe/H]=−1.5±0.4 dex. The mean extinction and reddening for this cluster are=A0.38 0.02KsandE(J−Ks)=0.72±0.02 mag, respectively, as measured from the RR Lyrae colors and the near-IR color–magnitude diagram. We also measure the cluster distance using the RR Lyrae type ab stars. The cluster meandistance modulus is(m−M)0=14.38±0.03 mag, implying a distanceD=7.5±0.2 kpc and aGalactocentric distanceRG=4.3 kpc
Fil: Minniti, Dante. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Palma, Tali. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Dékány, Istvan. Universidad de Heidelberg; Alemania
Fil: Hempel, Maren. Pontificia Universidad Católica de Chile; Chile
Fil: Rejkuba, Marina. Excellence Cluster Universe; Alemania. European Southern Observatory; Alemania
Fil: Pullen, Joyce. Universidad Andrés Bello; Chile
Fil: Alonso-García, Javier. Universidad Andrés Bello; Chile
Fil: Barba, Rodolfo Hector. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Barbuy, Beatriz. Universidade de Sao Paulo; Brasil
Fil: Bica, Eduardo. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Bonatto, Charles. Universidade Federal do Rio Grande do Sul; Brasil
Fil: Borissova, Jura. Universidad Andrés Bello; Chile
Fil: Catelan, Marcio. Universidad Andrés Bello; Chile. Pontificia Universidad Católica de Chile; Chile
Fil: Carballo-Bello, Julio A.. Pontificia Universidad Católica de Chile; Chile. Universidad Andrés Bello; Chile
Fil: Chene, Andre Nicolas. Northern Operations Center. Gemini Observatory; Estados Unidos
Fil: Claria Olmedo, Juan Jose. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Cohen, Roger E.. Universidad de Concepción; Chile
Fil: Contreras Ramos, Rodrigo. Pontificia Universidad Católica de Chile; Chile. Universidad Andrés Bello; Chile
Fil: Dias, Bruno. European Southern Observatory; Chile
Fil: Emerson, Jim. Queen Mary University of London; Reino Unido
Fil: Froebrich, Dirk. University Of Kent; Reino Unido. European Southern Observatory; Chile
Fil: Buckner, Anne S. M.. University Of Kent; Reino Unido
Fil: Geisler, Douglas. Universidad de Concepción; Chile
Fil: Gonzalez, Oscar A.. Royal Observatory. UK Astronomy Technology Centre; Reino Unido. European Southern Observatory; Chile
Fil: Gran, Felipe. Pontificia Universidad Católica de Chile; Chile
Fil: Hagdu, Gergely. Pontificia Universidad Católica de Chile; Chile
Fil: Irwin, Mike. University of Cambridge; Reino Unido
Fil: Ivanov, Valentin D.. European Southern Observatory; Chile
Fil: Kurtev, Radostin. Pontificia Universidad Católica de Valparaíso; Chile
Fil: Lucas, Philip W.. University Of Hertfordshire; Reino Unido
Fil: Majaess, Daniel. Mount Saint Vincent University; Canadá
Fil: Mauro, Francesco. Universidad de Concepción; Chile
Fil: Moni-Bidin, Christian. Universidad Católica del Norte; Chile
Fil: Navarrete, Camila. Pontificia Universidad Católica de Chile; Chile
Fil: Alegría, Sebastian Ramírez. Pontificia Universidad Católica de Valparaíso; Chile
Fil: Saito, Roberto K.. Universidade Federal de Santa Catarina; Brasil
Fil: Valenti, Elena. European Southern Observatory; Alemania
Fil: Zoccali, Manuela. Instituto Milenio de Astrofísica; Chile. Pontificia Universidad Católica de Chile; Chile
description We use deep multi-epoch near-IR images of the VISTA Variables in the Vía Láctea(VVV)Survey to search forRR Lyrae stars toward the Southern Galactic plane. Here, we report the discovery of a group of RR Lyrae starsclose together in VVV tile d025. Inspection of the VVV images and PSF photometry reveals that most of thesestars are likely to belong to a globular cluster that matches the position of the previously known star clusterFSR 1716. The stellar density map of thefield yields a>100σdetection for this candidate globular cluster that iscentered at equatorial coordinates R.A.J2000=16:10:30.0, decl.J2000=−53:44:56 and galactic coordinatesl=329.77812,b=−1.59227. The color–magnitude diagram of this object reveals a well-populated red giantbranch, with a prominent red clump atKs=13.35±0.05, andJ−Ks=1.30±0.05. We present the clusterRR Lyrae positions, magnitudes, colors, periods, and amplitudes. The presence of RR Lyrae indicates an oldglobular cluster, with an age>10 Gyr. We classify this object as an Oosterhoff type I globular cluster, based onthe mean period of its RR Lyrae type ab,áñ=P0.540days, and argue that this is a relatively metal-poor clusterwith[Fe/H]=−1.5±0.4 dex. The mean extinction and reddening for this cluster are=A0.38 0.02KsandE(J−Ks)=0.72±0.02 mag, respectively, as measured from the RR Lyrae colors and the near-IR color–magnitude diagram. We also measure the cluster distance using the RR Lyrae type ab stars. The cluster meandistance modulus is(m−M)0=14.38±0.03 mag, implying a distanceD=7.5±0.2 kpc and aGalactocentric distanceRG=4.3 kpc
publishDate 2017
dc.date.none.fl_str_mv 2017-03
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/11336/76842
Minniti, Dante; Palma, Tali; Dékány, Istvan; Hempel, Maren; Rejkuba, Marina; et al.; FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars; Institute of Physics Publishing; Astrophysical Journal; 838; 1; 3-2017
2041-8213
0004-637X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/76842
identifier_str_mv Minniti, Dante; Palma, Tali; Dékány, Istvan; Hempel, Maren; Rejkuba, Marina; et al.; FSR 1716: A New Milky Way Globular Cluster Confirmed Using VVV RR Lyrae Stars; Institute of Physics Publishing; Astrophysical Journal; 838; 1; 3-2017
2041-8213
0004-637X
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://iopscience.iop.org/article/10.3847/2041-8213/838/1/L14/meta
info:eu-repo/semantics/altIdentifier/doi/10.3847/2041-8213/838/1/L14
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
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dc.format.none.fl_str_mv application/pdf
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dc.publisher.none.fl_str_mv Institute of Physics Publishing
publisher.none.fl_str_mv Institute of Physics Publishing
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
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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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