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CLASH : the Cluster Lensing And Supernova search with Hubble

5 Feb 2014, 15:00 UTC
CLASH : the Cluster Lensing And Supernova search with Hubble
(200 words excerpt, click title or image to see full post)

In 2010 the Hubble Space Telescope launched three bold new initiatives that came to be called the Multi-Cycle Treasury programs. One was the CANDELS program, the parent of this blog.  Another was the Panchromatic Hubble Andromeda Treasury program (PHAT), a deep and detailed study of the nearby galaxy M31, led by Julianne Dalcanton of the University of Washington. The third program was called CLASH: the Cluster Lensing And Supernova survey with Hubble (tortured acronyms were a prerequisite for approval of the HST time). The CLASH team (not to be confused with The Clash) is led by Marc Postman from the Space Telescope Science Institute, and includes about 50 astronomers at some 25 institutions around the world.  This survey is in many ways a close sister to the CANDELS program, and indeed there is significant overlap across the two groups, especially in the supernova search component, which has been a joint CLASH+CANDELS effort.  Galaxy cluster MACS J1206.2-0847 (or MACS 1206 for short) as viewed through Hubble in the CLASH program. Credit: NASA, ESA, M. Postman (STScI), and the CLASH TeamThe CLASH program takes a deep look at 25 massive galaxy clusters. These are collections of galaxies (a few hundred in each), hot gas (heated to above 10 ...

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