Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk
- Autores
- Alonso-García, Javier; Saito, Roberto K.; Hempel, Maren; Minniti, Dante; Pullen, Joyce; Catelan, Márcio; Ramos, Rodrigo Contreras; Cross, Nicholas J. G.; Gonzalez, Oscar A.; Lucas, Philip W.; Palma, Tali; Valenti, Elena; Zoccali, Manuela
- Año de publicación
- 2018
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly diminished. Aims. By exploiting the high resolution and wide field-of-view of the VVV images we aim to produce a deep, homogeneous, and highly complete database of sources that cover the innermost regions of our Galaxy. Methods. To better deal with the high crowding in the surveyed areas, we have used point spread function (PSF)-fitting techniques to obtain a new photometry of the VVV images, in the ZY JHKs near-infrared filters available. Results. Our final catalogs contain close to one billion sources, with precise photometry in up to five near-infrared filters, and they are already being used to provide an unprecedented view of the inner Galactic stellar populations. We make these catalogs publicly available to the community. Our catalogs allow us to build the VVV giga-CMD, a series of color-magnitude diagrams of the inner regions of the Milky Way presented as supplementary videos. We provide a qualitative analysis of some representative CMDs of the inner regions of the Galaxy, and briefly mention some of the studies we have developed with this new dataset so far.
Fil: Alonso-García, Javier. Universidad de Antofagasta; Chile. Universidad Andrés Bello; Chile
Fil: Saito, Roberto K.. Universidade Federal de Santa Catarina; Brasil
Fil: Hempel, Maren. Pontificia Universidad Católica de Chile; Chile
Fil: Minniti, Dante. Universidad Andrés Bello; Chile
Fil: Pullen, Joyce. Universidad Andrés Bello; Chile
Fil: Catelan, Márcio. Pontificia Universidad Católica de Chile; Chile
Fil: Ramos, Rodrigo Contreras. Pontificia Universidad Católica de Chile; Chile
Fil: Cross, Nicholas J. G.. University of Edinburgh; Reino Unido
Fil: Gonzalez, Oscar A.. Royal Observatory; Reino Unido
Fil: Lucas, Philip W.. University Of Hertfordshire; Reino Unido
Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina
Fil: Valenti, Elena. European Southern Observatory; Alemania
Fil: Zoccali, Manuela. Pontificia Universidad Católica de Chile; Chile - Materia
-
CATALOGS
GALAXY: BULGE
GALAXY: DISK
GALAXY: STELLAR CONTENT
SURVEYS
TECHNIQUES: PHOTOMETRIC - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/100601
Ver los metadatos del registro completo
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Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern diskAlonso-García, JavierSaito, Roberto K.Hempel, MarenMinniti, DantePullen, JoyceCatelan, MárcioRamos, Rodrigo ContrerasCross, Nicholas J. G.Gonzalez, Oscar A.Lucas, Philip W.Palma, TaliValenti, ElenaZoccali, ManuelaCATALOGSGALAXY: BULGEGALAXY: DISKGALAXY: STELLAR CONTENTSURVEYSTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly diminished. Aims. By exploiting the high resolution and wide field-of-view of the VVV images we aim to produce a deep, homogeneous, and highly complete database of sources that cover the innermost regions of our Galaxy. Methods. To better deal with the high crowding in the surveyed areas, we have used point spread function (PSF)-fitting techniques to obtain a new photometry of the VVV images, in the ZY JHKs near-infrared filters available. Results. Our final catalogs contain close to one billion sources, with precise photometry in up to five near-infrared filters, and they are already being used to provide an unprecedented view of the inner Galactic stellar populations. We make these catalogs publicly available to the community. Our catalogs allow us to build the VVV giga-CMD, a series of color-magnitude diagrams of the inner regions of the Milky Way presented as supplementary videos. We provide a qualitative analysis of some representative CMDs of the inner regions of the Galaxy, and briefly mention some of the studies we have developed with this new dataset so far.Fil: Alonso-García, Javier. Universidad de Antofagasta; Chile. Universidad Andrés Bello; ChileFil: Saito, Roberto K.. Universidade Federal de Santa Catarina; BrasilFil: Hempel, Maren. Pontificia Universidad Católica de Chile; ChileFil: Minniti, Dante. Universidad Andrés Bello; ChileFil: Pullen, Joyce. Universidad Andrés Bello; ChileFil: Catelan, Márcio. Pontificia Universidad Católica de Chile; ChileFil: Ramos, Rodrigo Contreras. Pontificia Universidad Católica de Chile; ChileFil: Cross, Nicholas J. G.. University of Edinburgh; Reino UnidoFil: Gonzalez, Oscar A.. Royal Observatory; Reino UnidoFil: Lucas, Philip W.. University Of Hertfordshire; Reino UnidoFil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Observatorio Astronomico de la Universidad Nacional de Cordoba; ArgentinaFil: Valenti, Elena. European Southern Observatory; AlemaniaFil: Zoccali, Manuela. Pontificia Universidad Católica de Chile; ChileEDP Sciences2018-11info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/100601Alonso-García, Javier; Saito, Roberto K.; Hempel, Maren; Minniti, Dante; Pullen, Joyce; et al.; Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk; EDP Sciences; Astronomy and Astrophysics; 619; 11-2018; 4-150004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/201833432info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:12:09Zoai:ri.conicet.gov.ar:11336/100601instacron: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:34982025-10-15 15:12:09.812CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| title |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| spellingShingle |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk Alonso-García, Javier CATALOGS GALAXY: BULGE GALAXY: DISK GALAXY: STELLAR CONTENT SURVEYS TECHNIQUES: PHOTOMETRIC |
| title_short |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| title_full |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| title_fullStr |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| title_full_unstemmed |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| title_sort |
Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk |
| dc.creator.none.fl_str_mv |
Alonso-García, Javier Saito, Roberto K. Hempel, Maren Minniti, Dante Pullen, Joyce Catelan, Márcio Ramos, Rodrigo Contreras Cross, Nicholas J. G. Gonzalez, Oscar A. Lucas, Philip W. Palma, Tali Valenti, Elena Zoccali, Manuela |
| author |
Alonso-García, Javier |
| author_facet |
Alonso-García, Javier Saito, Roberto K. Hempel, Maren Minniti, Dante Pullen, Joyce Catelan, Márcio Ramos, Rodrigo Contreras Cross, Nicholas J. G. Gonzalez, Oscar A. Lucas, Philip W. Palma, Tali Valenti, Elena Zoccali, Manuela |
| author_role |
author |
| author2 |
Saito, Roberto K. Hempel, Maren Minniti, Dante Pullen, Joyce Catelan, Márcio Ramos, Rodrigo Contreras Cross, Nicholas J. G. Gonzalez, Oscar A. Lucas, Philip W. Palma, Tali Valenti, Elena Zoccali, Manuela |
| author2_role |
author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
CATALOGS GALAXY: BULGE GALAXY: DISK GALAXY: STELLAR CONTENT SURVEYS TECHNIQUES: PHOTOMETRIC |
| topic |
CATALOGS GALAXY: BULGE GALAXY: DISK GALAXY: STELLAR CONTENT SURVEYS TECHNIQUES: PHOTOMETRIC |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly diminished. Aims. By exploiting the high resolution and wide field-of-view of the VVV images we aim to produce a deep, homogeneous, and highly complete database of sources that cover the innermost regions of our Galaxy. Methods. To better deal with the high crowding in the surveyed areas, we have used point spread function (PSF)-fitting techniques to obtain a new photometry of the VVV images, in the ZY JHKs near-infrared filters available. Results. Our final catalogs contain close to one billion sources, with precise photometry in up to five near-infrared filters, and they are already being used to provide an unprecedented view of the inner Galactic stellar populations. We make these catalogs publicly available to the community. Our catalogs allow us to build the VVV giga-CMD, a series of color-magnitude diagrams of the inner regions of the Milky Way presented as supplementary videos. We provide a qualitative analysis of some representative CMDs of the inner regions of the Galaxy, and briefly mention some of the studies we have developed with this new dataset so far. Fil: Alonso-García, Javier. Universidad de Antofagasta; Chile. Universidad Andrés Bello; Chile Fil: Saito, Roberto K.. Universidade Federal de Santa Catarina; Brasil Fil: Hempel, Maren. Pontificia Universidad Católica de Chile; Chile Fil: Minniti, Dante. Universidad Andrés Bello; Chile Fil: Pullen, Joyce. Universidad Andrés Bello; Chile Fil: Catelan, Márcio. Pontificia Universidad Católica de Chile; Chile Fil: Ramos, Rodrigo Contreras. Pontificia Universidad Católica de Chile; Chile Fil: Cross, Nicholas J. G.. University of Edinburgh; Reino Unido Fil: Gonzalez, Oscar A.. Royal Observatory; Reino Unido Fil: Lucas, Philip W.. University Of Hertfordshire; Reino Unido Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Observatorio Astronomico de la Universidad Nacional de Cordoba; Argentina Fil: Valenti, Elena. European Southern Observatory; Alemania Fil: Zoccali, Manuela. Pontificia Universidad Católica de Chile; Chile |
| description |
The inner regions of the Galaxy are severely affected by extinction, which limits our capability to study the stellar populations present there. The Vista Variables in the Vía Láctea (VVV) ESO Public Survey has observed this zone at near-infrared wavelengths where reddening is highly diminished. Aims. By exploiting the high resolution and wide field-of-view of the VVV images we aim to produce a deep, homogeneous, and highly complete database of sources that cover the innermost regions of our Galaxy. Methods. To better deal with the high crowding in the surveyed areas, we have used point spread function (PSF)-fitting techniques to obtain a new photometry of the VVV images, in the ZY JHKs near-infrared filters available. Results. Our final catalogs contain close to one billion sources, with precise photometry in up to five near-infrared filters, and they are already being used to provide an unprecedented view of the inner Galactic stellar populations. We make these catalogs publicly available to the community. Our catalogs allow us to build the VVV giga-CMD, a series of color-magnitude diagrams of the inner regions of the Milky Way presented as supplementary videos. We provide a qualitative analysis of some representative CMDs of the inner regions of the Galaxy, and briefly mention some of the studies we have developed with this new dataset so far. |
| publishDate |
2018 |
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2018-11 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://hdl.handle.net/11336/100601 Alonso-García, Javier; Saito, Roberto K.; Hempel, Maren; Minniti, Dante; Pullen, Joyce; et al.; Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk; EDP Sciences; Astronomy and Astrophysics; 619; 11-2018; 4-15 0004-6361 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/100601 |
| identifier_str_mv |
Alonso-García, Javier; Saito, Roberto K.; Hempel, Maren; Minniti, Dante; Pullen, Joyce; et al.; Milky Way demographics with the VVV survey: IV. PSF photometry from almost one billion stars in the Galactic bulge and adjacent southern disk; EDP Sciences; Astronomy and Astrophysics; 619; 11-2018; 4-15 0004-6361 CONICET Digital CONICET |
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eng |
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EDP Sciences |
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