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Gravitationally Lensed High Redshift Galaxies in the Field of 1E0657-56

Mehlert, D; Seitz, S; Saglia, R; Appenzeller, I; Bender, R; Fricke, K J; Hoffman, T; Hopp, U; Kudritzki, R-P; Pauldrach, A

Description

We present images and long-slit spectra obtained with FORS1 at UT1 of the VLT centered on the gravitational arc of the galaxy cluster 1E0657-56 (z = 0.296). The cluster is one of the hottest, most massive clusters known so far and acts as a powerful gravitational telescope, amplifying the flux of background sources by up to a factor of 20. We present photometric results together with the spectra of the gravitational arc (z = 3.24) and four additional amplified high redshift objects (z = 2.34 to...[Show more]

dc.contributor.authorMehlert, D
dc.contributor.authorSeitz, S
dc.contributor.authorSaglia, R
dc.contributor.authorAppenzeller, I
dc.contributor.authorBender, R
dc.contributor.authorFricke, K J
dc.contributor.authorHoffman, T
dc.contributor.authorHopp, U
dc.contributor.authorKudritzki, R-P
dc.contributor.authorPauldrach, A
dc.date.accessioned2015-12-13T23:41:14Z
dc.date.available2015-12-13T23:41:14Z
dc.identifier.issn0004-6361
dc.identifier.urihttp://hdl.handle.net/1885/94811
dc.description.abstractWe present images and long-slit spectra obtained with FORS1 at UT1 of the VLT centered on the gravitational arc of the galaxy cluster 1E0657-56 (z = 0.296). The cluster is one of the hottest, most massive clusters known so far and acts as a powerful gravitational telescope, amplifying the flux of background sources by up to a factor of 20. We present photometric results together with the spectra of the gravitational arc (z = 3.24) and four additional amplified high redshift objects (z = 2.34 to 3.08) that were also included in the slit by chance coincidence. A magnification map has been obtained from a lens model derived from the multiple image systems. We compare our observed spectra with models and briefly discuss the stellar contents of these galaxies. Furthermore we measured the equivalent widths of the C IV 1550 and Si IV 1400 absorption lines for the objects behind 1E0657-56 studied here, as well as for some additional starburst galaxies (nearby and at high z). For C IV we find an increasing absorption equivalent width with decreasing redshift. We discuss whether this correlation could be related to the increase of metallicity with the age of the universe.
dc.publisherSpringer
dc.sourceAstronomy and Astrophysics
dc.subjectKeywords: Galaxies: clusters: general; Galaxies: evolution; Galaxies: formation; Galaxies: fundamental parameters; Galaxies: starburst; Galaxies: stellar content
dc.titleGravitationally Lensed High Redshift Galaxies in the Field of 1E0657-56
dc.typeJournal article
local.description.notesImported from ARIES
local.description.refereedYes
local.identifier.citationvolume379
dc.date.issued2001
local.identifier.absfor020110 - Stellar Astronomy and Planetary Systems
local.identifier.ariespublicationMigratedxPub24497
local.type.statusPublished Version
local.contributor.affiliationMehlert, D, University of Heidelberg
local.contributor.affiliationSeitz, S, Universitatssternwarte Munchen
local.contributor.affiliationSaglia, R, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationAppenzeller, I, University of Heidelberg
local.contributor.affiliationBender, R, Universitatssternwarte Munchen
local.contributor.affiliationFricke, K J, Universitatssternwarte Gottingen
local.contributor.affiliationHoffman, T, Universitatssternwarte Munchen
local.contributor.affiliationHopp, U, Universitatssternwarte Munchen
local.contributor.affiliationKudritzki, R-P, Universitatssternwarte Munchen
local.contributor.affiliationPauldrach, A, Universitatssternwarte Munchen
local.bibliographicCitation.startpage96
local.bibliographicCitation.lastpage106
dc.date.updated2015-12-12T09:31:48Z
local.identifier.scopusID2-s2.0-0002795652
CollectionsANU Research Publications

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