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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/76842
Ver los metadatos del registro completo
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oai:ri.conicet.gov.ar:11336/76842 |
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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 |
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 |
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) |
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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1844613969111678976 |
score |
13.070432 |