J/ApJ/887/126ivo://CDS.VizieR/J/ApJ/887/126doi:10.26093/cds/vizier.18870126CDSGoicoechea L.J.Shalyapin V.N.2021-09-17T08:49:54Z2021-06-22T15:07:55ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frgravitational-lensingvisible-astronomyspectroscopysloan-photometryBecause follow-up observations of quadruple gravitational lens systems are of extraordinary importance for astrophysics and cosmology, we present single-epoch optical spectra and r-band light curves of PS J0147+4630. This recently discovered system mainly consists of four images ABCD of a background quasar around a foreground galaxy G that acts as a gravitational lens. First, we use long-slit spectroscopic data in the Gemini Observatory Archive and a multi-component fitting to accurately resolve the spectra of A, D, and G. The spectral profile of G resembles that of an early-type galaxy at a redshift of 0.678+/-0.001, which is about 20% higher than the previous estimate. Additionally, the stellar velocity dispersion is measured to ~5% precision. Second, our early r-band monitoring with the Liverpool Telescope leads to accurate light curves of the four quasar images. Adopting time delays predicted by the lens model, the new lens redshift, and a standard cosmology, we report the detection of microlensing variations in C and D as large as ~0.1mag on timescales of a few hundred days. We also estimate an actual delay between A and B of a few days (B is leading), which demonstrates the big potential of optical monitoring campaigns of PS J0147+4630.2019ApJ...887..126Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/887/126CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/MNRAS/371/703 : MILES library of empirical spectra (Sanchez-Blazquez+, 2006)J/A+A/544/A62 : Spectra of 13 lensed quasars (Sluse+, 2012)J/A+A/596/A77 : SDSS J1339+1310 spectra and light curves (Goicoechea+, 2016)J/ApJ/836/14 : LCs & spectra of SDSSJ1515+1511 lens system (Shalyapin+, 2017)J/MNRAS/465/4914 : R-band light curves of HE 0435-1223 (Bonvin+, 2017)J/A+A/605/L8 : Spectra of lensed QSO PSOJ0147 (Lee, 2017)J/A+A/616/A118 : Lensed QSOs LC & spectral monitoring (Gil-Merino+ 2018)J/ApJ/836/14 : LCs & spectra of SDSSJ1515+1511 lens system (Shalyapin+, 2017)J/ApJ/869/106 : SMARTS & Euler monitoring of WFI J2033-4723 (Morgan+, 2018)J/A+A/646/A165 : SDSS J1339+1310 light curves and spectra (Shalyapin+, 2021)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/887/126https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/887/126http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/887/126https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/887/126https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/887/126http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/887/126GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/887/126/table1GNT-GMOS-B600 spectra of PS J0147+4630ADGrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintlambda[4402.9/7605.4] Observed wavelength in Angstrom units0.1nmem.wldoubleFA[23/281] Flux of PS J0147+4630A, in 10^-17^erg/cm^2^/s/{AA} units0.1nW.m**-3phot.fluxfloate_FA[1/7] Uncertainty in FA0.1nW.m**-3stat.errorfloatFD[1.5/27] Flux of PS J0147+4630D, in 10^-17^erg/cm^2^/s/{AA} units0.1nW.m**-3phot.fluxfloate_FD[0.4/5.1] Uncertainty in FD0.1nW.m**-3stat.errorfloatFG[-0.4/1.9] Flux of PS J0147+4630G, in 10^-17^erg/cm^2^/s/{AA} units0.1nW.m**-3phot.fluxfloate_FG[0.2/5] Uncertainty in FG (1)0.1nW.m**-3stat.errorfloatJ/ApJ/887/126/table2Photometry of the lens system PS J0147+4630recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateCivil datetime.epochnullableEpochEpoch, Julian Date; JD-2450000.5dtime.epochdoubleFWHM[0.7/2.4] Full-width at half-maximum of the seeing diskarcsecspect.line.widthfloatS/N[222/479] Signal-to-noise ratio for the PSF star (1)stat.snrintrmag-A[15.9/16] r-SDSS magnitude of PS J0147+4630Amagphot.mag;em.opt.Rfloatrmag-B[16.1/16.3] r-SDSS magnitude of PS J0147+4630Bmagphot.mag;em.opt.Rfloatrmag-C[16.5/16.7] r-SDSS magnitude of PS J0147+4630Cmagphot.mag;em.opt.Rfloatrmag-D[18.2/18.4] r-SDSS magnitude of PS J0147+4630Dmagphot.mag;em.opt.Rfloatrmag-S[15.3/15.5] r-SDSS magnitude of the control starmagphot.mag;em.opt.Rfloat