CLASH: NEW MULTIPLE IMAGES CONSTRAINING THE INNER MASS PROFILE OF MACS J1206.2-0847

被引：62

作者：

Zitrin, A. ^{[1
,2
]}

Rosati, P. ^{[3
]}

Nonino, M. ^{[4
]}

Grillo, C. ^{[5
]}

Postman, M. ^{[6
]}

Coe, D. ^{[6
]}

Seitz, S. ^{[7
]}

Eichner, T. ^{[7
]}

Broadhurst, T. ^{[8
,9
]}

Jouvel, S. ^{[10
]}

Balestra, I. ^{[11
]}

Mercurio, A. ^{[12
]}

Scodeggio, M. ^{[13
]}

Benitez, N. ^{[14
]}

Bradley, L. ^{[6
]}

Ford, H. ^{[15
]}

Host, O. ^{[10
]}

Jimenez-Teja, Y. ^{[14
]}

Koekemoer, A. ^{[6
]}

Zheng, W. ^{[15
]}

Bartelmann, M. ^{[2
]}

Bouwens, R. ^{[16
]}

Czoske, O. ^{[17
]}

Donahue, M. ^{[18
]}

Graur, O. ^{[1
]}

Graves, G. ^{[19
]}

Infante, L. ^{[20
]}

Jha, S. ^{[21
]}

Kelson, D. ^{[22
]}

Lahav, O. ^{[10
]}

Lazkoz, R. ^{[8
]}

Lemze, D. ^{[15
]}

Lombardi, M. ^{[23
]}

Maoz, D. ^{[1
]}

McCully, C. ^{[21
]}

Medezinski, E. ^{[15
]}

Melchior, P. ^{[24
,25
]}

Meneghetti, M. ^{[26
]}

Merten, J. ^{[2
]}

Molino, A. ^{[14
]}

Moustakas, L. A. ^{[27
]}

Ogaz, S. ^{[6
]}

Patel, B. ^{[21
]}

Regoes, E. ^{[28
]}

Riess, A. ^{[6
]}

Rodney, S. ^{[15
]}

Umetsu, K. ^{[29
]}

Van der Wel, A. ^{[30
]}

机构：

[1] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[2] Heidelberg Univ, Inst Theoret Astrophys, ZAH, D-69120 Heidelberg, Germany

[3] ESO, D-85748 Garching, Germany

[4] INAF Osservatorio Astron Trieste, I-40131 Trieste, Italy

[5] Tech Univ Munich, D-85748 Garching, Germany

[6] Space Telescope Sci Inst, Baltimore, MD 21208 USA

[7] Univ Sternwarte Munchen, D-81679 Munich, Germany

[8] Univ Basque Country, Dept Theoret Phys, Bilbao 48080, Spain

[9] Basque Fdn Sci, IKERBASQUE, Bilbao, Spain

[10] UCL, Dept Phys & Astron, London WC1E 6BT, England

[11] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

[12] INAF Osservatorio Astron Capodimonte, I-80131 Naples, Italy

[13] INAF IASF Milano, I-20133 Milan, Italy

[14] CSIC, Inst Astrofis Andalucia, E-18008 Granada, Spain

[15] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[16] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

[17] Univ Vienna, Inst Astron, A-1180 Vienna, Austria

[18] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[19] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[20] Pontificia Univ Catolica Chile, Dept Astronoia & Astrofis, Santiago 22, Chile

[21] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[22] Observ Carnegie Inst Washington, Pasadena, CA 91101 USA

[23] Univ Milan, Dipartimento Fis, I-20133 Milan, Italy

[24] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 USA

[25] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA

[26] Osservatorio Astron Bologna, INAF, I-40127 Bologna, Italy

[27] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA

[28] CERN, European Lab Particle Phys, CH-1211 Geneva, Switzerland

[29] Acad Sinica, Inst Astron & Astrophys, Taipei 10617, Taiwan

[30] Max Planck Inst Astron, D-69117 Heidelberg, Germany

来源：

ASTROPHYSICAL JOURNAL | 2012年 / 749卷 / 02期

关键词：

dark matter; galaxies: clusters: general; galaxies: clusters: individual (MACS J1206.2-0847); galaxies: high-redshift; gravitational lensing: strong; STRONG-LENSING ANALYSIS; HUBBLE-SPACE-TELESCOPE; DEEP ADVANCED CAMERA; LINE-OF-SIGHT; SIMILAR-TO; GALAXY CLUSTERS; PHOTOMETRIC REDSHIFTS; LAMBDA-CDM; COMPLETE SAMPLE; EINSTEIN RADII;

D O I：

10.1088/0004-637X/749/2/97

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a strong-lensing analysis of the galaxy cluster MACS J1206.2-0847 (z = 0.44) using UV, Optical, and IR, HST/ACS/WFC3 data taken as part of the CLASH multi-cycle treasury program, with VLT/VIMOS spectroscopy for some of the multiply lensed arcs. The CLASH observations, combined with our mass model, allow us to identify 47 new multiply lensed images of 12 distant sources. These images, along with the previously known arc, span the redshift range 1 less than or similar to z less than or similar to 5.5, and thus enable us to derive a detailed mass distribution and to accurately constrain, for the first time, the inner mass profile of this cluster. We find an inner profile slope of d log Sigma/d log theta similar or equal to -0.55 +/- 0.1 (in the range [1 '', 53 ''], or 5 kpc less than or similar to r less than or similar to 300 kpc), as commonly found for relaxed and well-concentrated clusters. Using the many systems uncovered here we derive credible critical curves and Einstein radii for different source redshifts. For a source at z(s) similar or equal to 2.5, the critical curve encloses a large area with an effective Einstein radius of theta(E) = 28 '' +/- 3 '', and a projected mass of (1.34 +/- 0.15) x 10(14) M-circle dot. From the current understanding of structure formation in concordance cosmology, these values are relatively high for clusters at z similar to 0.5, so that detailed studies of the inner mass distribution of clusters such as MACS J1206.2-0847 can provide stringent tests of the Lambda CDM paradigm.

引用

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