PEERING THROUGH THE DUST: PRECISE ASTROMETRY IN THE GALACTIC MID-PLANE WITH THE VVV SURVEY

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dc.catalogadorvzp
dc.contributor.authorLucas, PW
dc.contributor.authorSmart, RL
dc.contributor.authorJones, HRA
dc.contributor.authorKurtev, R
dc.contributor.authorBeamin Muhlenbrock, Juan Carlos
dc.contributor.authorBorissova, J.
dc.contributor.authorGromadzki, Grzegorz
dc.contributor.authorIvanov, Valentin
dc.contributor.authorMinniti, Dante
dc.contributor.authorPinfield, DJ
dc.date.accessioned2024-03-15T15:33:51Z
dc.date.available2024-03-15T15:33:51Z
dc.date.issued2015
dc.description.abstractGaia will see little of the Galactic mid-plane and nuclear bulge due to high extinction at optical wavelengths. To study the structure and kinematics of the inner Galaxy we must look to longer wavelengths. The Vista Variables in the Via Lactea (VVV, Minniti et al. 2010) survey currently provides just over 4 years of observations covering approximately 560 square degrees of the Galactic bulge and plane. Typically each source is observed 50-150 times in the Ks band over this period. Using these data we provide relative proper motions for approximately 200 million unique sources down to Ks similar to 16 with uncertainties approaching 1 mas yr(-1). In addition, we fit a solution of the parallactic motion of all sources with significant proper motion and discover a number of new nearby brown dwarfs. These results will allow us to identify faint common proper motion companions to stars with Gaia parallaxes, increasing the number of brown dwarf benchmark objects. Our absolute astrometric calibration precision is currently similar to 2 mas yr(-1), based on PPMXL. The Gaia absolute astrometric reference grid will allow us to precisely anchor our results and measure the streaming motions of stars in the bulge. Finally, we anticipate that the catalogue could provide kinematic distances to the numerous optically invisible high amplitude variable stars that VVV is discovering.
dc.format.extent1
dc.fuente.origenConveris
dc.identifier.doi10.1051/eas/1567087
dc.identifier.eissn1638-1963
dc.identifier.issn1633-4760
dc.identifier.scopusid000372372700086
dc.identifier.urihttps://doi.org/10.1051/eas/1567087
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/84506
dc.identifier.wosidWOS:000372372700086
dc.information.autorucInstituto de Física; Beamin Muhlenbrock, Juan Carlos; 0000-0002-8409-6534; 154617
dc.nota.accesoContenido parcial
dc.pagina.final401
dc.pagina.inicio401
dc.revistaMILKY WAY UNRAVELLED BY GAIA: GREAT SCIENCE FROM THE GAIA DATA RELEASES
dc.rightsacceso restringido
dc.subject.ddc520
dc.subject.deweyAstronomía
dc.subject.ods11 Sustainable Cities and Communities
dc.subject.odspa11 Ciudades y comunidades sostenibles
dc.titlePEERING THROUGH THE DUST: PRECISE ASTROMETRY IN THE GALACTIC MID-PLANE WITH THE VVV SURVEY
dc.typecomunicación de congreso
dc.volumen67-68
sipa.codpersvinculados154617
sipa.trazabilidadConveris;20-07-2021
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