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2024A&A...689A.148S - Astronomy and Astrophysics, volume 689A148 (2024/9-1)
The VISTA Variables in the Vía Láctea extended (VVVX) ESO public survey: Completion of the observations and legacy.
SAITO R.K., HEMPEL M., ALONSO-GARCIA J., LUCAS P.W., MINNITI D., ALONSO S., BARAVALLE L., BORISSOVA J., CACERES C., CHENE A.N., CROSS N.J.G., DUPLANCIC F., GARRO E.R., GOMEZ M., IVANOV V.D., KURTEV R., LUNA A., MAJAESS D., NAVARRO M.G., PULLEN J.B., REJKUBA M., SANDERS J.L., SMITH L.C., ALBINO P.H.C., ALONSO M.V., AMORES E.B., ANGELONI R., ARIAS J.I., ARNABOLDI M., BARBUY B., BAYO A., BEAMIN J.C., BEDIN L.R., BELLINI A., BENJAMIN R.A., BICA E., BONATTO C.J., BOTAN E., BRAGA V.F., BROWN D.A., CABRAL J.B., CAMARGO D., CARATTI O GARATTI A., CARBALLO-BELLO J.A., CATELAN M., CHAVERO C., CHIJANI M.A., CLARIA J.J., COLDWELL G.V., PENA C.C., RAMOS R.C., CORRAL-SANTANA J.M., CORTES C.C., CORTES-CONTRERAS M., CRUZ P., DAZA-PERILLA I.V., DEBATTISTA V.P., DIAS B., DONOSO L., D'SOUZA R., EMERSON J.P., FEDERLE S., FERMIANO V., FERNANDEZ J., FERNANDEZ-TRINCADO J.G., FERREIRA T., LOPES C.E.F., FIRPO V., FLORES-QUINTANA C., FRAGA L., FROEBRICH D., GALDEANO D., GAVIGNAUD I., GEISLER D., GERHARD O.E., GIEREN W., GONZALEZ O.A., GRAMAJO L.V., GRAN F., GRANITTO P.M., GRIGGIO M., GUO Z., GUROVICH S., HILKER M., JONES H.R.A., KAMMERS R., KUHN M.A., KUMAR M.S.N., KUNDU R., LARES M., LIBRALATO M., LIMA E., MACCARONE T.J., CORTES P.M., MARTIN E.L., MASETTI N., MATSUNAGA N., MAURO F., McDONALD I., MEJIAS A., MESA V., MILLA-CASTRO F.P., MINNITI J.H., BIDIN C.M., MONTENEGRO K., MORRIS C., MOTTA V., NAVARETE F., MOLINA C.N., NIKZAT F., NILO CASTELLON J.L., OBASI C., ORTIGOZA-URDANETA M., PALMA T., PARISI C., RAMIREZ K.P., PEREYRA L., PEREZ N., PETRALIA I., PICHEL A., PIGNATA G., ALEGRIA S.R., ROJAS A.F., ROJAS D., ROMAN-LOPES A., ROVERO A.C., SAROON S., SCHMIDT E.O., SCHRODER A.C., SCHULTHEIS M., SGRO M.A., SOLANO E., SOTO M., STECKLUM B., STEEGHS D., TAMURA M., TISSERA P., VALCARCE A.A.R., VALOTTO C.A., VASQUEZ S., VILLALON C., VILLANOVA S., CADIZ F.V., ZELADA BACIGALUPO R., ZIJLSTRA A. and ZOCCALI M.
Abstract (from CDS):
Aims. With the completion of VVVX observations during the first semester of 2023, we present here the observing strategy, a description of data quality and access, and the legacy of VVVX.
Methods. VVVX took ∼2000 h, covering about 4% of the sky in the bulge and southern disk. VVVX covered most of the gaps left between the VVV and the VISTA Hemisphere Survey (VHS) areas and extended the VVV time baseline in the obscured regions affected by high extinction and hence hidden from optical observations.
Results. VVVX provides a deep JHKs catalogue of ≳1.5 × 109 point sources, as well as a Ks band catalogue of ∼107 variable sources. Within the existing VVV area, we produced a 5D map of the surveyed region by combining positions, distances, and proper motions of well-understood distance indicators such as red clump stars, RR Lyrae, and Cepheid variables.
Conclusions. In March 2023 we successfully finished the VVVX survey observations that started in 2016, an accomplishment for ESO Paranal Observatory upon 4200 h of observations for VVV+VVVX. The VVV+VVVX catalogues complement those from the Gaia mission at low Galactic latitudes and provide spectroscopic targets for the forthcoming ESO high-multiplex spectrographs MOONS and 4MOST.
Abstract Copyright: © The Authors 2024
Journal keyword(s): surveys - Galaxy: bulge - Galaxy: disk - Galaxy: stellar content - infrared: stars
VizieR on-line data: <Available at CDS (J/A+A/689/A148): tablea1.dat>
Simbad objects: 13
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