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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

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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

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Título 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
Autor Saito, Roberto K.
Hempel, Maren
Minniti, Dante
Lucas, Philip W.
Rejkuba, Marina
Toledo, Ignacio
Gonzalez, O. A.
Alonso Garcia, Javier
Irwin, M.J.
Gonzalez-Solares, Eduardo
Hodgkin, Simon
Lewis, James R.
Cross, Nick
Ivanov, Valentin D.
Kerins, Eamonn
Emerson, Jim P.
Soto, M.
Amôres, Eduardo Brescansin de
Gurovich, Sebástian
Dékány, István
Angeloni, Rodolfo
Beamin, Juan Carlos
Catelan, Márcio
Padilla, Nelson
Zoccali, Manuela
Pietrukowicz, Pawel
Moni Bidin, Christian
Mauro, Francesco
Geisler, Doug
Folkes, S. L.
Sale, Stuart E.
Borissova, Jura
Kurtev, Radostin Georgiev
Ahumada, Andrea Veronica
Alonso, Maria Victoria
Adamson, Andy
Arias, Julia Inés
Bandyopadhyay, Reba M.
Barbá, Rodolfo H.
Barbuy, Beatriz
Baume, Gustavo Luis
Bedin, Luigi R.
Bellini, Andrea
Bica, Eduardo Luiz Damiani
Bonatto, Charles Jose
Bronfman, Leonardo
Carraro, Giovanni
Chené, André-Nicolas
Claria Olmedo, Juan Jose
Clarke, J. R. A.
Contreras, C.
Corvillon, Andrea
Grijs, Richard de
Dias, Bruno Moreira de Souza
Drew, Janet E.
Fariña, Cecilia
Feinstein Baigorri, Carlos
Fernández Lajús, Eduardo Eusebio
Gamen, Roberto C.
Gieren, Wolfgang P.
Goldman, Bertrand
González-Fernández, Carlos
Grand, R. J. J.
Gunthardt, Guillermo
Hambly, Nigel C.
Hanson, M. M.
Helminiak, Krzysztof Grzegorz
Hoare, Melvin G.
Huckvale, L.
Jordán, Andrés
Kinemuchi, Karen
Longmore, Andy
López Corredoira, Martín
Maccarone, Thomas J.
Majaess, Daniel J.
Martín Guerrero de Escalante, Eduardo L.
Masetti, Nicola
Mennickent, Ronnald Enrique
Mirabel, I. Felix
Monaco, Lorenzo
Morelli, Lorenzo
Motta, Verónica
Palma, Tali
Parisi, M. C.
Parker, Quentin
Peñaloza, Francisco
Pietrzynski, Grzegorz
Pignata, Giuliano
Popescu, Bogdan
Read, Michael A.
Rojas, Alejandra
Roman-Lopes, Alexandre
Ruiz, Maria Teresa
Saviane, Ivo
Schreiber, Matthias R.
Schröder, A. C.
Sharma, S.
Smith, Michael D.
Sodre Junior, Laerte
Stead, Joe
Stephens, Andrew
Tamura, Motohide
Tappert, Claus
Thompson, Mark A.
Valenti, Elena
Vanzi, Leonardo
Walton, Nicholas A.
Weidmann, Walter
Zijlstra, Albert
Abstract 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 × 10⁸ 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.
Contido em Astronomy and astrophysics. Les Ulis. Vol. 537 (Jan. 2012), A107, 21 p.
Assunto Astrometria
Catalogos astronomicos
Fotometria astronômica
Galaxia
Mapeamentos astronômicos
[en] Galaxy: bulge
[en] Galaxy: disk
[en] Galaxy: stellar content
[en] Infrared: stars
[en] Stars: abundances
[en] Surveys
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/99083
Arquivos Descrição Formato
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