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GraL spectroscopic identification of multiply imaged quasars

dc.contributor.authorJALAN, Priyanka
dc.contributor.authorNEGI, Vibhore
dc.contributor.authorSURDEJ, Jean
dc.contributor.authorBOEHM, Céline
dc.contributor.authorDELCHAMBRE, Ludovic
dc.contributor.authorBROK, Jakob Sebastian Den
dc.contributor.authorDOBIE, Dougal
dc.contributor.authorDRAKE, Andrew
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorDUCOURANT, Christine
dc.contributor.authorDJORGOVSKI, S. George
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorGALLUCCIO, Laurent
dc.contributor.authorGRAHAM, Matthew J
dc.contributor.authorKLÜTER, Jonas
dc.contributor.authorKRONE-MARTINS, Alberto
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLECAMPION, Jean-François
dc.contributor.authorMAHABAL, Ashish A
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorMIGNARD, François
dc.contributor.authorMURPHY, Tara
dc.contributor.authorNIERENBERG, Anna
dc.contributor.authorSCARANO, Sergio
dc.contributor.authorSIMON, Joseph
hal.structure.identifierJoseph Louis LAGRANGE [LAGRANGE]
dc.contributor.authorSLEZAK, Eric
dc.contributor.authorSLUSE, Dominique
dc.contributor.authorSPÍNDOLA-DUARTE, Carolina
dc.contributor.authorSTERN, Daniel
dc.contributor.authorTEIXERA, Ramachrisna
dc.contributor.authorWAMBSGANSS, Joachim
dc.description.abstractEnGravitational lensing is proven to be one of the most efficient tools for studying the Universe. The spectral confirmation of such sources requires extensive calibration. This paper discusses the spectral extraction technique for the case of multiple source spectra being very near each other. Using the masking technique, we first detect high Signal-to-Noise (S/N) peaks in the CCD spectral image corresponding to the location of the source spectra. This technique computes the cumulative signal using a weighted sum, yielding a reliable approximation for the total counts contributed by each source spectrum. We then proceed with the subtraction of the contaminating spectra. Applying this method, we confirm the nature of 11 lensed quasar candidates.
dc.language.isoen
dc.title.enGraL spectroscopic identification of multiply imaged quasars
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]
dc.identifier.arxiv2312.08217
hal.identifierhal-04372627
hal.version1
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04372627v1
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