VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea

Context. The ESO public survey VISTA variables in the Vía Láctea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for about five years. Aims. We describe the progress of the survey observations in the first observing season, the...

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Autor principal: Saito, R.K.
Formato: JOUR
Materias:
Galaxy: bulge
Galaxy: disk
Galaxy: stellar content
infrared: stars
stars: abundances
surveys
Astrophysics
Galaxies
Image quality
Infrared devices
Lanthanum alloys
Photometry
Population statistics
Surveying
Surveys
Galaxy: disks
Galaxy:stellar content
Infrared: star
Stars: abundances
Stars
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00046361_v537_n_p_Saito
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00046361_v537_n_p_Saito2023-10-03T14:00:38Z VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea Saito, R.K. Galaxy: bulge Galaxy: disk Galaxy: stellar content infrared: stars stars: abundances surveys Astrophysics Galaxies Image quality Infrared devices Lanthanum alloys Photometry Population statistics Surveying Surveys Galaxy: bulge Galaxy: disks Galaxy:stellar content Infrared: star Stars: abundances Stars Context. The ESO public survey VISTA variables in the Vía Láctea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for about five years. Aims. We describe the progress of the survey observations in the first observing season, the observing strategy, and quality of the data obtained. Methods. The observations are carried out on the 4-m VISTA telescope in the ZYJHKs filters. In addition to the multi-band imaging the variability monitoring campaign in the Ks filter has started. Data reduction is carried out using the pipeline at the Cambridge Astronomical Survey Unit. The photometric and astrometric calibration is performed via the numerous 2MASS sources observed in each pointing. Results. The first data release contains the aperture photometry and astrometric catalogues for 348 individual pointings in the ZYJHKs filters taken in the 2010 observing season. The typical image quality is ∼0′′.9-1′′.0. The stringent photometric and image quality requirements of the survey are satisfied in 100% of the JHKs images in the disk area and 90% of the JHKs images in the bulge area. The completeness in the Z and Y images is 84% in the disk, and 40% in the bulge. The first season catalogues contain 1.28 × 10 8 stellar sources in the bulge and 1.68 × 108 in the disk area detected in at least one of the photometric bands. The combined, multi-band catalogues contain more than 1.63 × 108 stellar sources. About 10% of these are double detections because of overlapping adjacent pointings. These overlapping multiple detections are used to characterise the quality of the data. The images in the JHKs bands extend typically ∼4 mag deeper than 2MASS. The magnitude limit and photometric quality depend strongly on crowding in the inner Galactic regions. The astrometry for Ks = 15-18 mag has rms ∼35-175 mas. Conclusions. The VVV Survey data products offer a unique dataset to map the stellar populations in the Galactic bulge and the adjacent plane and provide an exciting new tool for the study of the structure, content, and star-formation history of our Galaxy, as well as for investigations of the newly discovered star clusters, star-forming regions in the disk, high proper motion stars, asteroids, planetary nebulae, and other interesting objects. © 2012 ESO. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00046361_v537_n_p_Saito
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Galaxy: bulge
Galaxy: disk
Galaxy: stellar content
infrared: stars
stars: abundances
surveys
Astrophysics
Galaxies
Image quality
Infrared devices
Lanthanum alloys
Photometry
Population statistics
Surveying
Surveys
Galaxy: bulge
Galaxy: disks
Galaxy:stellar content
Infrared: star
Stars: abundances
Stars
spellingShingle Galaxy: bulge
Galaxy: disk
Galaxy: stellar content
infrared: stars
stars: abundances
surveys
Astrophysics
Galaxies
Image quality
Infrared devices
Lanthanum alloys
Photometry
Population statistics
Surveying
Surveys
Galaxy: bulge
Galaxy: disks
Galaxy:stellar content
Infrared: star
Stars: abundances
Stars
Saito, R.K.
VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea
topic_facet Galaxy: bulge
Galaxy: disk
Galaxy: stellar content
infrared: stars
stars: abundances
surveys
Astrophysics
Galaxies
Image quality
Infrared devices
Lanthanum alloys
Photometry
Population statistics
Surveying
Surveys
Galaxy: bulge
Galaxy: disks
Galaxy:stellar content
Infrared: star
Stars: abundances
Stars
description Context. The ESO public survey VISTA variables in the Vía Láctea (VVV) started in 2010. VVV targets 562 sq. deg in the Galactic bulge and an adjacent plane region and is expected to run for about five years. Aims. We describe the progress of the survey observations in the first observing season, the observing strategy, and quality of the data obtained. Methods. The observations are carried out on the 4-m VISTA telescope in the ZYJHKs filters. In addition to the multi-band imaging the variability monitoring campaign in the Ks filter has started. Data reduction is carried out using the pipeline at the Cambridge Astronomical Survey Unit. The photometric and astrometric calibration is performed via the numerous 2MASS sources observed in each pointing. Results. The first data release contains the aperture photometry and astrometric catalogues for 348 individual pointings in the ZYJHKs filters taken in the 2010 observing season. The typical image quality is ∼0′′.9-1′′.0. The stringent photometric and image quality requirements of the survey are satisfied in 100% of the JHKs images in the disk area and 90% of the JHKs images in the bulge area. The completeness in the Z and Y images is 84% in the disk, and 40% in the bulge. The first season catalogues contain 1.28 × 10 8 stellar sources in the bulge and 1.68 × 108 in the disk area detected in at least one of the photometric bands. The combined, multi-band catalogues contain more than 1.63 × 108 stellar sources. About 10% of these are double detections because of overlapping adjacent pointings. These overlapping multiple detections are used to characterise the quality of the data. The images in the JHKs bands extend typically ∼4 mag deeper than 2MASS. The magnitude limit and photometric quality depend strongly on crowding in the inner Galactic regions. The astrometry for Ks = 15-18 mag has rms ∼35-175 mas. Conclusions. The VVV Survey data products offer a unique dataset to map the stellar populations in the Galactic bulge and the adjacent plane and provide an exciting new tool for the study of the structure, content, and star-formation history of our Galaxy, as well as for investigations of the newly discovered star clusters, star-forming regions in the disk, high proper motion stars, asteroids, planetary nebulae, and other interesting objects. © 2012 ESO.
format JOUR
author Saito, R.K.
author_facet Saito, R.K.
author_sort Saito, R.K.
title VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea
title_short VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea
title_full VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea
title_fullStr VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea
title_full_unstemmed VVV DR1: The first data release of the Milky Way bulge and southern plane from the near-infrared ESO public survey VISTA variables in the Vía Láctea
title_sort vvv dr1: the first data release of the milky way bulge and southern plane from the near-infrared eso public survey vista variables in the vía láctea
url http://hdl.handle.net/20.500.12110/paper_00046361_v537_n_p_Saito
work_keys_str_mv AT saitork vvvdr1thefirstdatareleaseofthemilkywaybulgeandsouthernplanefromthenearinfraredesopublicsurveyvistavariablesinthevialactea
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