Please use this identifier to cite or link to this item:
|Title:||MUSE integral-field spectroscopy towards the Frontier Fields cluster Abell S1063. I. Data products and redshift identifications||Authors:||Karman, W.
Caputi, K. I.
Koekemoer, A. M.
van der Wel, A.
|Issue Date:||2015||Journal:||ASTRONOMY & ASTROPHYSICS||Number:||574||First Page:||A11||Abstract:||We present the first observations of the Frontier Fields cluster Abell S1063 taken with the newly commissioned Multi Unit Spectroscopic Explorer (MUSE) integral field spectrograph. Because of the relatively large field of view (1 arcmin<SUP>2</SUP>), MUSE is ideal to simultaneously target multiple galaxies in blank and cluster fields over the full optical spectrum. We analysed the four hours of data obtained in the science verification phase on this cluster and measured redshifts for 53 galaxies. We confirm the redshift of five cluster galaxies, and determine the redshift of 29 other cluster members. Behind the cluster, we find 17 galaxies at higher redshift, including three previously unknown Lyman-α emitters at z> 3, and five multiply-lensed galaxies. We report the detection of a new z = 4.113 multiply lensed galaxy, with images that are consistent with lensing model predictions derived for the Frontier Fields. We detect C iii], C iv, and He ii emission in a multiply lensed galaxy at z = 3.116, suggesting the likely presence of an active galactic nucleus. We also created narrow-band images from the MUSE datacube to automatically search for additional line emitters corresponding to high-redshift candidates, but we could not identify any significant detections other than those found by visual inspection. With the new redshifts, it will become possible to obtain an accurate mass reconstruction in the core of Abell S1063 through refined strong lensing modelling. Overall, our results illustrate the breadth of scientific topics that can be addressed with a single MUSE pointing. We conclude that MUSE is a very efficient instrument to observe galaxy clusters, enabling their mass modelling, and to perform a blind search for high-redshift galaxies.||Acknowledgments:||Based on observations made with the European Southern Observatory Very Large Telescope (ESO/VLT) at Cerro Paranal, under programme ID 60.A-9345(A). This work utilises gravitational lensing models produced by PIs Bradać, Ebeling, Merten Zitrin, Sharon, and Williams funded as part of the HST Frontier Fields programme conducted by STScI. STScI is operated by the Association of Universities for Research in Astronomy, Inc. under NASA contract NAS 5-26555. The lens models were obtained from the Mikulski Archive for Space Telescopes (MAST). The authors thank the anonymous referee for his/her helpful comments that improved the clarity of this article. The authors also thank Thomas Martinsson for help with the MUSE pipeline, Benjamin Clement for support in designing the observations, and Elena Valenti and Vicenzo Mainieri for technical support during the observation planning and data reduction phase. The Dark Cosmology Centre is funded by the DNRF.||URI:||http://hdl.handle.net/20.500.12386/23824||URL:||https://www.aanda.org/articles/aa/abs/2015/02/aa24962-14/aa24962-14.html||ISSN:||0004-6361||DOI:||10.1051/0004-6361/201424962||Bibcode ADS:||2015A&A...574A..11K||Fulltext:||open|
|Appears in Collections:||1.01 Articoli in rivista|
Show full item record
Files in This Item:
|aa24962-14.pdf||PDF editoriale||3.77 MB||Adobe PDF||View/Open|
checked on Sep 24, 2020
checked on Sep 24, 2020
Items in DSpace are published in Open Access, unless otherwise indicated.