1. Welcome to the First CLASH Science Team Meeting September 20 – 21, 2010 Granada, Spain

2. CLASH Fun Facts 524 HST orbits = 1.22 Megaseconds of exp time, ~4500 exposures (incl. PAR), ~300 GB raw data We are 32 researchers from 9 countries and 17 institutions, spanning 13 time zones. Total ground-based telescope time awarded in 2010 based on CLASH: ~370 hours (~1.3 Msec) Sum of all exposure times for archival x-ray, IR, SZE, Subaru data being used: 4.2 Megaseconds E-mails exchanged since June 2009: >3,800 Grams of dark matter to survey: 2.5 x 10 46

3. CLASH Yields a Significant Expansion of SL Cluster Data Strongly lensing Clusters with 3 or more filters from HST (ACS and/or WFC3) Figure credit: Dan Coe CLASH doubles the number of SL clusters with >3 HST passbands. CLASH has uniform and well-defined sample selection criteria. No SL clusters currently have more than 9 HST passbands – new territory for science.

4. Lens Parameter Space Number of Lensed Objects with z Cluster Mass CLASH Survey Schematic representation of existing Observations DM profile DM Concentration Einstein Radii DM Substructure As functions of:  Total Mass  Redshift  ICM properties  SF History (from spectra) Number of Multiply Lensed Objects

5. Current Schedule AAS Seattle Workshop on Direct Detection of DM, France SNe & Host Gal, Australia Paths to SNe Ia Explosions, Italy New Horizons for High-z, UK MACS1206 KITP Galaxy Cluster Seminars, UCSB STScI May Symp: Dark Matter First MCT P.I. Progress Report First z>1 SNe detection? First hi-z lensed galaxy detection?

6. The CLASH Symphony F225W F275W F336W F350LP F390W F435W F475W F606W F625W F775W F814W F850LP F105W F110W F125W F140W F160W 0 10 20 30 40 50 60 70 80 90 100 110 days Abell 383: Solid dots: Cluster core, Open dots: Parallel fields; Black = orient A, Blue = orient B WFC3/IR ACS/WFC WFC3/UVIS

7. May 2009 Jan 2011 Sep 2012 May 2014 Jan 2016 Sep 2017 May 2019 Cycle 18 Cycle 19 Cycle 20 Curves assume 41.4 month mean lifetime of single string instrument (based on actual HST SI experience). Predicts 50% failure probability for double string occurs at 69 months. ACS is single string, WFC3 is double. R. Doxsey (2009)

8. Objectives for this meeting Energize team … our program begins to execute in 58 days! Get acquainted: teams that know one another work together better! Concurrence on high priority science for first year. Identification of the first CLASH science papers and their lead authors. Identify outstanding CLASH data mgmt issues and develop solutions before the November data deluge. Planning for ground-based observing campaigns. Planning for upcoming telescope proposals. Concurrence on collaboration policies (authorship, new collaborators, etc.) Strategize about upcoming 2011 scientific symposia – want strong CLASH coverage at all relevant major meetings. Enjoy Granada!