题  目：Strongly lensed high redshift galaxies identified in Herschel wide surveys. Prospects for ALMA observations.

报告人：Prof. Alain Omont
　　　　　  (Institut d'Astrophysique de Paris)
　　　　　  http://www.iap.fr/useriap/omont/omont.uk.html

摘  要：The very few early known, strongly lensed high-z sub-mm sources (FIRAS10214, Cloverleaf, APM08279), played a very important role in the development of high-z submm/mm astronomy through pioneer detections of 0.85-1.2mm continuum and CO lines, and various high sensitivity studies allowed by their strong magnification. Herschel wide surveys, which will hopefully observe ~1000 deg², are discovering hundreds of similarly strongly lensed submm galaxies (e.g. Negrello et al. 2010). I will first review the current state of mm/submm follow-up of such Herschel lensed galaxies with IRAM and other facilities, for CO redshift determination, mapping mm continuum and CO lines with interferometers, measuring 1.2mm continuum flux density, etc. I will specially stress the case of the recent detection of H2O at IRAM/PdBI in two such sources at z=2.3 and 3.3 (Omont et al. 2011). These examples give an idea of the numerous studies allowed by strong lensing magnification and the enhanced capabilities of ALMA and IRAM/NOEMA, using this unique sample of hundreds of Herschel high-z lensed galaxies.

时  间：2011年11月2日（星期三）上午10：30

地  点：（北京西路2号）紫台大楼327教室

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