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Abstract
The Cluster Lensing And Supernova survey with Hubble (CLASH) is a 524-orbit Multi-Cycle Treasury Program to use the gravitational lensing properties of 25 galaxy clusters to accurately constrain their mass distributions. The survey, described in detail in this paper, will definitively establish the degree of concentration of dark matter in the cluster cores, a key prediction of structure formation models. The CLASH cluster sample is larger and less biased than current samples of space-based imaging studies of clusters to similar depth, as we have minimized lensing-based selection that favors systems with overly dense cores. Specifically, 20 CLASH clusters are solely X-ray selected. The X-ray-selected clusters are massive (kT > 5 keV) and, in most cases, dynamically relaxed. Five additional clusters are included for their lensing strength (theta(Ein) > 35 '' at z(s) = 2) to optimize the likelihood of finding highly magnified high-z (z > 7) galaxies. A total of 16 broadband filters, spanning the near-UV to near-IR, are employed for each 20-orbit campaign on each cluster. These data are used to measure precise (sigma(z) similar to 0.02(1 + z)) photometric redshifts for newly discovered arcs. Observations of each cluster are spread over eight epochs to enable a search for Type Ia supernovae at z > 1 to improve constraints on the time dependence of the dark energy equation of state and the evolution of supernovae. We present newly re-derived X-ray luminosities, temperatures, and Fe abundances for the CLASH clusters as well as a representative source list for MACS1149.6 + 2223 (z = 0.544).
Keywords
ULTRA-DEEP-FIELD, DELAY-TIME DISTRIBUTION, MASSIVE GALAXY CLUSTERS, SIMILAR-TO 7, LYMAN-BREAK GALAXIES, DARK-MATTER HALOES, PHOTOMETRIC, REDSHIFT ESTIMATION, EXTRAGALACTIC LEGACY SURVEY, SPITZER-SPACE-TELESCOPE, TADPOLE ADVANCED CAMERA, dark energy, dark matter, Galaxy: evolution, Galaxy: formation, gravitational lensing: strong, gravitational lensing: weak

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Chicago
Postman, Marc, Dan Coe, Narciso Benitez, Larry Bradley, Tom Broadhurst, Megan Donahue, Holland Ford, et al. 2012. “The Cluster Lensing And Supernova Survey with Hubble : an Overview.” Astrophysical Journal Supplement Series 199 (2).
APA
Postman, M., Coe, D., Benitez, N., Bradley, L., Broadhurst, T., Donahue, M., Ford, H., et al. (2012). The Cluster Lensing And Supernova survey with Hubble : an overview. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 199(2).
Vancouver
1.
Postman M, Coe D, Benitez N, Bradley L, Broadhurst T, Donahue M, et al. The Cluster Lensing And Supernova survey with Hubble : an overview. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. 2012;199(2).
MLA
Postman, Marc, Dan Coe, Narciso Benitez, et al. “The Cluster Lensing And Supernova Survey with Hubble : an Overview.” ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 199.2 (2012): n. pag. Print.
@article{8573789,
  abstract     = {The Cluster Lensing And Supernova survey with Hubble (CLASH) is a 524-orbit Multi-Cycle Treasury Program to use the gravitational lensing properties of 25 galaxy clusters to accurately constrain their mass distributions. The survey, described in detail in this paper, will definitively establish the degree of concentration of dark matter in the cluster cores, a key prediction of structure formation models. The CLASH cluster sample is larger and less biased than current samples of space-based imaging studies of clusters to similar depth, as we have minimized lensing-based selection that favors systems with overly dense cores. Specifically, 20 CLASH clusters are solely X-ray selected. The X-ray-selected clusters are massive (kT {\textrangle} 5 keV) and, in most cases, dynamically relaxed. Five additional clusters are included for their lensing strength (theta(Ein) {\textrangle} 35 '' at z(s) = 2) to optimize the likelihood of finding highly magnified high-z (z {\textrangle} 7) galaxies. A total of 16 broadband filters, spanning the near-UV to near-IR, are employed for each 20-orbit campaign on each cluster. These data are used to measure precise (sigma(z) similar to 0.02(1 + z)) photometric redshifts for newly discovered arcs. Observations of each cluster are spread over eight epochs to enable a search for Type Ia supernovae at z {\textrangle} 1 to improve constraints on the time dependence of the dark energy equation of state and the evolution of supernovae. We present newly re-derived X-ray luminosities, temperatures, and Fe abundances for the CLASH clusters as well as a representative source list for MACS1149.6 + 2223 (z = 0.544).},
  articleno    = {25},
  author       = {Postman, Marc and Coe, Dan and Benitez, Narciso and Bradley, Larry and Broadhurst, Tom and Donahue, Megan and Ford, Holland and Graur, Or and Graves, Genevieve and Jouvel, Stephanie and Koekemoer, Anton and Lemze, Doron and Medezinski, Elinor and Molino, Alberto and Moustakas, Leonidas and Ogaz, Sara and Riess, Adam and Rodney, Steve and Rosati, Piero and Umetsu, Keiichi and Zheng, Wei and Zitrin, Adi and Bartelmann, Matthias and Bouwens, Rychard and Czakon, Nicole and Golwala, Sunil and Host, Ole and Infante, Leopoldo and Jha, Saurabh and Jimenez-Teja, Yolanda and Kelson, Daniel and Lahav, Ofer and Lazkoz, Ruth and Maoz, Dani and McCully, Curtis and Melchior, Peter and Meneghetti, Massimo and Merten, Julian and Moustakas, John and Nonino, Mario and Patel, Brandon and Regoes, Enikoe and Sayers, Jack and Seitz, Stella and van der Wel, Arjen},
  issn         = {0067-0049},
  journal      = {ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES},
  language     = {eng},
  number       = {2},
  pages        = {23},
  title        = {The Cluster Lensing And Supernova survey with Hubble : an overview},
  url          = {http://dx.doi.org/10.1088/0067-0049/199/2/25},
  volume       = {199},
  year         = {2012},
}

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