Discovery of a high-redshift Einstein ring

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dc.contributor.authorCabanac, RA
dc.contributor.authorValls-Gabaud, D
dc.contributor.authorJaunsen, AO
dc.contributor.authorLidman, C
dc.contributor.authorJerjen, H
dc.date.accessioned2025-01-21T01:06:58Z
dc.date.available2025-01-21T01:06:58Z
dc.date.issued2005
dc.description.abstractWe report the discovery of a partial Einstein ring of radius 1.''48 produced by a massive (and seemingly isolated) elliptical galaxy. The spectroscopic follow-up at the VLT reveals a 2L(star) galaxy at z = 0.986, which is lensing a post-starburst galaxy at z = 3.773. This unique configuration yields a very precise measure of the mass of the lens within the Einstein radius, (8.3 +/- 0.4) x 10(11)h(70)(-1) M-circle dot. The fundamental plane relation indicates an evolution rate of dlog(M/L)(B)/dz = -0.57 +/- 0.04, similar to other massive ellipticals at this redshift. The source galaxy shows strong interstellar absorption lines indicative of large gas-phase metallicities, with fading st phase populations after a burst stellar Higher resolution spectra and will allow the detailed imaging study of an unbiased representative of the galaxy population when the universe was just 12% of its current age.
dc.fuente.origenWOS
dc.identifier.doi10.1051/0004-6361:200500115
dc.identifier.eissn1432-0746
dc.identifier.issn0004-6361
dc.identifier.urihttps://doi.org/10.1051/0004-6361:200500115
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/96252
dc.identifier.wosidWOS:000229475600004
dc.issue.numero2
dc.language.isoen
dc.pagina.finalL25
dc.pagina.inicioL21
dc.revistaAstronomy & astrophysics
dc.rightsacceso restringido
dc.subjectcosmology : observations
dc.subjectgravitational lensi lensing
dc.subjectgalaxies : high-redshift
dc.subjectellipticals
dc.subjectevolution
dc.subjectFOR J0332-3557
dc.titleDiscovery of a high-redshift Einstein ring
dc.typeartículo
dc.volumen436
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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