| Article | |
| Report number | arXiv:1103.5618 |
| Title | The Cluster Lensing and Supernova Survey with Hubble (CLASH): Strong Lensing Analysis of Abell 383 from 16-Band HST WFC3/ACS Imaging |
| Author(s) | Zitrin, A. ; Broadhurst, T. ; Coe, D. ; Umetsu, K. ; Postman, M. ; Benitez, N. ; Meneghetti, M. ; Medezinski, E. ; Jouvel, S. ; Bradley, L. ; Koekemoer, A. ; Zheng, W. ; Ford, H. ; Merten, J. ; Kelson, D. ; Lahav, O. ; Lemze, D. ; Molino, A. ; Nonino, M. ; Donahue, M. ; Rosati, P. ; Van der Wel, A. ; Bartelmann, M. ; Bouwens, R. ; Graur, O. ; Graves, G. ; Host, O. ; Infante, L. ; Jha, S. ; Jimenez-Teja, Y. ; Lazkoz, R. ; Maoz, D. ; McCully, C. ; Melchior, P. ; Moustakas, L.A. ; Ogaz, S. ; Patel, B. ; Regoes, E. (CERN) ; Riess, A. ; Rodney, S. ; Seitz, S. |
| Publication | 2011 |
| Imprint | 30 Mar 2011 |
| Number of pages | 13 |
| Note | Comments: 13 pages, 14 figures, 2 tabels; Submitted to the ApJ 15 pages, 14 figures, 2 tabels/ V3 matches the submitted version later published in ApJ |
| In: | Astrophys. J. Lett. 742 (2011) 117 |
| DOI | 10.1088/0004-637X/742/2/117 |
| Subject category | Astrophysics and Astronomy |
| Abstract | We examine the inner mass distribution of the relaxed galaxy cluster Abell 383 in deep 16-band HST/ACS+WFC3 imaging taken as part of the CLASH multi-cycle treasury program. Our program is designed to study the dark matter distribution in 25 massive clusters, and balances depth with a wide wavelength coverage to better identify lensed systems and generate precise photometric redshifts. This information together with the predictive strength of our strong-lensing analysis method identifies 13 new multiply-lensed images and candidates, so that a total of 27 multiple-images of 9 systems are used to tightly constrain the inner mass profile, $d\log \Sigma/d\log r\simeq -0.6\pm 0.1$ (r<160 kpc). We find consistency with the standard distance-redshift relation for the full range spanned by the lensed images, 1.01<z<6.03, with the higher redshift sources deflected through larger angles as expected. The inner mass profile derived here is consistent with the results of our independent weak-lensing analysis of wide-field Subaru images, with good agreement in the region of overlap. The overall mass profile is well fitted by an NFW profile with M_{vir}=(5.37^{+0.70}_{-0.63}\pm 0.26) x 10^{14}M_{\odot}/h and a relatively high concentration, c_{vir}=8.77^{+0.44}_{-0.42}\pm 0.23, which lies above the standard c-M relation similar to other well-studied clusters. The critical radius of Abell 383 is modest by the standards of other lensing clusters, r_{E}\simeq16\pm2\arcsec (for z_s=2.55), so the relatively large number of lensed images uncovered here with precise photometric redshifts validates our imaging strategy for the CLASH survey. In total we aim to provide similarly high-quality lensing data for 25 clusters, 20 of which are X-ray selected relaxed clusters, enabling a precise determination of the representative mass profile free from lensing bias. (ABRIDGED) |
Corresponding record in: Inspire
Element opprettet 2011-03-30, sist endret 2021-09-17