Journal article

THE GRISM LENS-AMPLIFIED SURVEY FROM SPACE (GLASS). IV. MASS RECONSTRUCTION OF THE LENSING CLUSTER ABELL 2744 FROM FRONTIER FIELD IMAGING AND GLASS SPECTROSCOPY

X Wang, A Hoag, K-H Huang, T Treu, M Bradac, KB Schmidt, GB Brammer, B Vulcani, TA Jones, RE Ryan, R Amorin, M Castellano, A Fontana, E Merlin, M Trenti

ASTROPHYSICAL JOURNAL | IOP PUBLISHING LTD | Published : 2015

Abstract

We present a strong and weak lensing reconstruction of the massive cluster Abell 2744, the first cluster for which deep Hubble Frontier Fields (HFF) images and spectroscopy from the Grism Lens-Amplified Survey from Space (GLASS) are available. By performing a targeted search for emission lines in multiply imaged sources using the GLASS spectra, we obtain five high-confidence spectroscopic redshifts and two tentative ones. We confirm one strongly lensed system by detecting the same emission lines in all three multiple images. We also search for additional line emitters blindly and use the full GLASS spectroscopic catalog to test reliability of photometric redshifts for faint line emitters. We..

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University of Melbourne Researchers

Grants

Awarded by NASA Headquarters under the NASA Earth and Space Science Fellowship Program Grant


Awarded by NASA


Awarded by Japan Society for the Promotion of Science (JSPS)



Funding Acknowledgements

This paper is based on observations made with the NASA/ESA Hubble Space Telescope, obtained at STScI. We acknowledge support through grants HST-GO-13459, HST-GO-13177, and HST-AR-13235. We thank the anonymous referee for useful comments that helped improve the presentation of this paper. This work utilizes gravitational lensing models produced by P.I.s Bradac Ebeling, Merten, Zitrin, Sharon, and Williams funded as part of the HST Frontier Fields program conducted by STScI. M.B., K.H., and A.H. acknowledge support for this work through a Spitzer award issued by JPL/Caltech. A.H. acknowledges support by NASA Headquarters under the NASA Earth and Space Science Fellowship Program Grant ASTRO14F- 0007. M.B. and A.H. also acknowledge support from the special funding as part of the HST Frontier Fields program conducted by STScI. STScI is operated by AURA, Inc. under NASA contract NAS 5-26555. The data were obtained from the Mikulski Archive for Space Telescopes (MAST). T.T. acknowledges support by the Packard Foundation through a Packard Research Fellowship, and thanks the Osservatorio Astronomico di Monteporzio Catone and the American Academy in Rome for their kind hospitality during the writing of this manuscript. B.V. acknowledges the support from the World Premier International Research Center Initiative (WPI), MEXT, Japan, and the Kakenhi Grant-in-Aid for Young Scientists (B) (26870140) from the Japan Society for the Promotion of Science (JSPS). X.W. acknowledges Michael Maseda for the helpful discussions.