STRIDES: Spectroscopic and photometric characterization of the environment and effects of mass along the line of sight to the gravitational lenses des J0408-5354 and WGD 2038-4008

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dc.contributor.authorBuckley-Geer E.J.
dc.contributor.authorLin H.
dc.contributor.authorRusu C.E.
dc.contributor.authorPoh J.
dc.contributor.authorPalmese A.
dc.contributor.authorAgnello A.
dc.contributor.authorChristensen L.
dc.contributor.authorFrieman J.
dc.contributor.authorShajib A.J.
dc.contributor.authorTreu T.
dc.contributor.authorCollett T.
dc.contributor.authorBirrer S.
dc.contributor.authorAnguita T.
dc.contributor.authorFassnacht C.D.
dc.contributor.authorMeylan G.
dc.contributor.authorMukherjee S.
dc.contributor.authorWong K.C.
dc.contributor.authorAguena M.
dc.contributor.authorAllam S.
dc.contributor.authorAvila S.
dc.contributor.authorBertin E.
dc.contributor.authorBhargava S.
dc.contributor.authorBrooks D.
dc.contributor.authorCarnero Rosell A.
dc.contributor.authorCarrasco Kind M.
dc.contributor.authorCarretero J.
dc.contributor.authorCastander F.J.
dc.contributor.authorCostanzi M.
dc.contributor.authorDa Costa L.N.
dc.contributor.authorDe Vicente J.
dc.contributor.authorDesai S.
dc.contributor.authorDiehl H.T.
dc.contributor.authorDoel P.
dc.contributor.authorEifler T.F.
dc.contributor.authorEverett S.
dc.contributor.authorFlaugher B.
dc.contributor.authorFosalba P.
dc.contributor.authorGarciá-Bellido J.
dc.contributor.authorGaztanaga E.
dc.contributor.authorGruen D.
dc.contributor.authorGruendl R.A.
dc.contributor.authorGschwend J.
dc.contributor.authorGutierrez G.
dc.contributor.authorHinton S.R.
dc.contributor.authorHonscheid K.
dc.contributor.authorJames D.J.
dc.contributor.authorKuehn K.
dc.contributor.authorKuropatkin N.
dc.contributor.authorMaia M.A.G.
dc.contributor.authorMarshall J.L.
dc.contributor.authorMelchior P.
dc.contributor.authorMenanteau F.
dc.contributor.authorMiquel R.
dc.contributor.authorOgando R.L.C.
dc.contributor.authorPaz-Chinchón F.
dc.contributor.authorPlazas A.A.
dc.contributor.authorSanchez E.
dc.contributor.authorScarpine V.
dc.contributor.authorSchubnell M.
dc.date.accessioned2024-08-21T20:07:34Z
dc.date.available2024-08-21T20:07:34Z
dc.date.issued2020-11-01
dc.descriptionIndexación: Scopus.
dc.description.abstractIn time-delay cosmography, three of the key ingredients are (1) determining the velocity dispersion of the lensing galaxy, (2) identifying galaxies and groups along the line of sight with sufficient proximity and mass to be included in the mass model, and (3) estimating the external convergence κext from less massive structures that are not included in the mass model. We present results on all three of these ingredients for two time-delay lensed quad quasar systems, DES J0408-5354 and WGD 2038-4008. We use the Gemini, Magellan, and VLT telescopes to obtain spectra to both measure the stellar velocity dispersions of the main lensing galaxies and to identify the line-of-sight galaxies in these systems. Next, we identify 10 groups in DES J0408-5354 and two groups in WGD 2038-4008 using a group-finding algorithm. We then identify the most significant galaxy and galaxy-group perturbers using the 'flexion shift' criterion. We determine the probability distribution function of the external convergence κext for both of these systems based on our spectroscopy and on the DES-only multiband wide-field observations. Using weighted galaxy counts, calibrated based on the Millennium Simulation, we find that DES J0408-5354 is located in a significantly underdense environment, leading to a tight (width ∼ 3%), negative-value κext distribution. On the other hand, WGD 2038-4008 is located in an environment of close to unit density, and its low source redshift results in a much tighter κext of ~1%, as long as no external shear constraints are imposed.
dc.description.urihttps://watermark.silverchair.com/staa2563.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAA1YwggNSBgkqhkiG9w0BBwagggNDMIIDPwIBADCCAzgGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMJiZAms9tv8-Q0o4EAgEQgIIDCbAo-xNp4hKF1xMlaOS15JjxL_UhUytchQEqZfH5k31FWQRZV3vwrKDPwyLG0S79q5ZsdFBq5lg0eR7clSz8bgqRoXs8E8-5LWUNpBl07_x-blA832k32qKQDpeN6lZWPBjbqBorY5QZatovif1Vf2a_s2u4b1JUHplSUgKErNRNOEYvhuB6ZFRUmzwQlPAcajbedvNy8U_wy081jogzvPDwegh8h5RhxxOSaS588BXqYTUjLxiLZnKIjrjvuOcUsZcXNWY_zoCGJOUCyAOCR9DFHRVfpAMOR6HDR13Bb4f7HYxNcQUWzSP3CqOIKifft31P2iGXeEAbI4rTP_31obbB-WJ2tSFYkl4xjWz3aeabSPmuv5ddHjdgC7n1mE7GcOAwdZOsrBnSwpOr2I72Lf1USyt2BS9Nkb5h_GBuy5OLDlGOChOpzDmUqvxLcIYcyw7o6d0ubGGvIYTxnwUjUcdJYcacNlXNI1md5qVyKN82pJmyIUAkmeFutBza2eXHrddKjlaT3aOM0PE-fVytdNqcUOPe2aXqTItKOoUvOaV_03B86L_e4yK7zA6ePIiSGZbpsEctSjVtK3yU3NS8t-_me0RS86OTuANRHcSc1RkAckhX9R9EDsirqXIpnfhUFFPavvVNw79ru56k010mHSOKTvVFeJZJP2LPaKJBQxfveKAvWgnAaQjmruTM44ZhvNK5fQz8kE9JX8Mb5HvgwmtYhIuWqI5m4ACL-T-kc-cTOFpZMprjJti0TIVRF9i8PKhsmEIUk5d5XCTrE9C9Vv8UPmEjlv32VTjI54ZVq6qBtgxxqamyjAmLxlkAYWUd9KF7n4LDzNRCgBdj_sVarnH5mbgI0Ump4QizUjDMagwdhAvYcEboz0XhYg0pAhIklTRtmlHaEzJHmgYVPOVqRzwV4SkggRQmAnYG6xllfju6zXQAj_FumMkeXerp8qfn1SN_oDUgjpHRhSix92YEz85p2inr04jOurjWsbaNXzu4gZMjp6Cqphox48GR2Jh1HAWgvlIOBnYz3g
dc.identifier.citationMonthly Notices of the Royal Astronomical Society Volume 498, Issue 3, Pages 3241 - 3274 1 November 2020
dc.identifier.doi10.1093/mnras/staa2563
dc.identifier.issn0035-8711
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/59407
dc.language.isoen_US
dc.publisherOxford University Press
dc.subjectgalaxies: groups: general
dc.subjectgravitational lensing: strong
dc.subjectquasars: individual: DES J0408-5354, WGD 2038-4008
dc.titleSTRIDES: Spectroscopic and photometric characterization of the environment and effects of mass along the line of sight to the gravitational lenses des J0408-5354 and WGD 2038-4008
dc.typeArtículo
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