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dc.contributor.authorShalyapin, Vyacheslav es_ES
dc.contributor.authorGoicoechea Santamaría, Luis Julián es_ES
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.date.accessioned2018-06-15T09:13:44Z
dc.date.available2018-06-15T09:13:44Z
dc.date.issued2014-08es_ES
dc.identifier.issn0004-6361es_ES
dc.identifier.issn1432-0746es_ES
dc.identifier.otherAYA2010-21741-C03-03es_ES
dc.identifier.urihttp://hdl.handle.net/10902/13906
dc.description.abstractWe present deep I-band imaging (NOT-ALFOSC) and spectroscopic (GTC-OSIRIS) observations of the gravitational lens system SDSS J1339+1310. This consists of two images of a lensed quasar, A and B, and a lensing galaxy G between the two quasar images. Our observations led to the following main results: (1) We obtained new accurate positions for B and G (relative to A), as well as structure parameters for the light distribution of G. The new position angle for G is separated by ~50° from the previously determined value. (2) The spectrum of G is typical for early-type galaxies, and we measured its redshift (0.609 ± 0.001) for the first time. (3) We determined the flux ratio B/A for the cores of the emission lines in the two quasar spectra. They were used to constrain the macrolens flux ratio MBA and dust extinction parameters. (4) The continuum flux ratio was appropriately corrected to obtain the microlensing magnification ratio of the continuum µBA. This µBA indicates that B is amplified (relative to A) by a factor of about 3-5, with larger amplifications at shorter wavelengths. The observed microlensing chromaticity coincides with a sharp drop in the r-band flux of B. (5) We reconstructed the lensing mass from the new observational constraints on the relative astrometry, MBA and the luminous structure of G. We also used the redshift of G to predict the time delay between quasar images (43 ± 5 d, A is leading).es_ES
dc.description.sponsorshipAcknowledgements. We wish to thank the anonymous referee for her/his con-structive comments, which have significantly improved the original manuscript. Based on observations made with the Gran Telescopio Canarias (GTC), installed at the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, in the island of La Palma. This article is also based on observations made with the Nordic Optical Telescope (NOT) and the Liverpool Telescope (LT), operated on the island of La Palma by the Nordic Optical Telescope Scientific Association and the Liverpool John Moores University(with financial support from the UK Science and Technology Facilities Council),respectively, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias. This research has been supported by the Spanish Department of Science and Innovation grant AYA2010-21741-C03-03 (Gravitational LENses and DArk MAtter−GLENDAMA project), and the University of Cantabria.es_ES
dc.format.extent11 p.es_ES
dc.language.isospaes_ES
dc.publisherEDP Scienceses_ES
dc.rights© ESO, 2014es_ES
dc.sourceA&A 568, A116 (2014)es_ES
dc.titleDeep optical imaging and spectroscopy of the lens system SDSS J1339+1310es_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherVersionhttps://doi.org/10.1051/0004-6361/201323360es_ES
dc.rights.accessRightsopenAccesses_ES
dc.identifier.DOI10.1051/0004-6361/201323360es_ES
dc.type.versionpublishedVersiones_ES


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