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SUMMARY:Cross-talk in Cosmic Maps  &amp\; the PAU Survey - Enrique Gaztana
 ga (IEEC-CSIC Barcelona)
DTSTART:20131118T130000Z
DTEND:20131118T140000Z
UID:TALK48224@talks.cam.ac.uk
CONTACT:Camille Bonvin
DESCRIPTION:Wide field extragalactic surveys (galaxy and CMB maps) have ch
 anged our understanding of the Universe\, with evidence for dark matter an
 d cosmic acceleration. But we need new ideas and more accurate data to und
 erstand this picture. The combination and cross-talk of spectroscopic and 
 photometric techniques to measure galaxy clustering\, weak gravitational l
 ensing and redshift space distortion can be used for accurate estimation o
 f the cosmic expansion and growth history. I will present some ideas of ho
 w to approach this goal. I will also review the status of  novel photometr
 ic survey (PAU) from the 4m William Herschel Telescope (WHT) using a new c
 amera called PAUCam which employs 48 narrow band (100A) filters in the ran
 ge 370-850nm and 6 broad band filters in the range 300-1000nm. The PAU Sur
 vey will be unique due to sampling a wide range of galaxy types and reachi
 ng a high surface density of objects. PAU will produce low resolution spec
 tra for millions of galaxies\, yielding photometric redshifts an order of 
 magnitude better than is possible with broad band photometry. This provide
 s an ideal survey for studies of galaxy formation and a to apply the cross
 -talk techniques to measure cosmology.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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