The VVV near-IR galaxy catalogue beyond the Galactic disc

Vista sencilla de ítem
dc.contributor.authorBaravalle, Laura D
dc.contributor.authorAlonso, María Victoria
dc.contributor.authorMinniti, Dante
dc.contributor.authorNilo Castellón, José Luis
dc.contributor.authorSoto, Mario
dc.contributor.authorValotto, Carlos
dc.contributor.authorVillalón, Carolina
dc.contributor.authorGraña, Darío
dc.contributor.authorAmôres, Eduardo B
dc.contributor.authorMilla Castro, Fernanda
dc.date.accessioned2022-07-12T23:30:41Z
dc.date.available2022-07-12T23:30:41Z
dc.date.issued2021-03
dc.descriptionIndexación: Scopuses
dc.description.abstractKnowledge about the large-scale distribution of galaxies is far from complete in the Zone of Avoidance (ZoA), which is mostly due to high interstellar extinction and to source confusion at lower Galactic latitudes. Past near-infrared (NIR) surveys, such as the Two Micron All Sky Survey (2MASS), have shown the power of probing large-scale structure at these latitudes. Our aim is to map the galaxy distribution across the Southern Galactic plane using the VISTA Variables in the Vía Láctea Survey (VVV), which reach 2-4 mag deeper than 2MASS. We used SExtractor+PSFEx to identify extended objects and to measure their sizes, the light concentration index, magnitudes, and colours. Morphological and colour constraints and visual inspection were used to confirm galaxies. We present the resulting VVV NIR Galaxy Catalogue (VVV NIRGC) of 5563 visually confirmed galaxies, of which only 45 were previously known. This is the largest catalogue of galaxies towards the Galactic plane, with 99 per cent of these galaxies being new discoveries. We found that the galaxy density distribution closely resembled the distribution of low interstellar extinction of the existing NIR maps. We also present a description of the 185 2MASS extended sources observed in the region, of which 16 per cent of these objects had no previous description, which we have now classified. We conclude that interstellar extinction and stellar density are the main limitations for the detection of background galaxies in the ZoA. The VVV NIRGC is a new data set providing information for extragalactic studies in the Galactic plane. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.es
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 502, Issue 1, Pages 601 - 6201 March 2021es
dc.identifier.doi10.1093/mnras/staa4020
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/23227
dc.language.isoenes
dc.publisherMonthly Notices of the Royal Astronomical Societyes
dc.subjectcatalogueses
dc.subjectgalaxies: photometryes
dc.subjectinfrared: galaxieses
dc.subjectsurveyses
dc.titleThe VVV near-IR galaxy catalogue beyond the Galactic disces
dc.typeArtículoes
Archivos
Bloque original
Mostrando 1 - 1 de 1
Miniatura
Nombre:
Baravalle, Laura D - The-VVV-nearIR-galaxy-catalogue-beyond-the-Galactic-discMonthly-Notices-of-the-Royal-Astronomical-Society.pdf
Tamaño:
12.79 MB
Formato:
Adobe Portable Document Format
Descripción:
Texto completo en ingles
Descargar
Bloque de licencias
Mostrando 1 - 1 de 1
No hay miniatura disponible
Nombre:
license.txt
Tamaño:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descripción:
Descargar
Colecciones
FCE - Artículos de Revista