Physics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009noao.prop..230k&link_type=abstract
NOAO Proposal ID #2009B-0230
Physics
Scientific paper
The Cosmic Origins Spectrograph (COS) will be installed aboard the Hubble Space Telescope (HST) in May, 2009. The unprecedented far-UV throughput of COS (20-30 times that of STIS at R ~ 20,000) will revolutionize many studies, including the investigation of the local intergalactic medium (IGM). In particular, COS will allow us to refine estimates of the baryon content and metallicity of the IGM, as well as the relationship of IGM absorbers to galaxies. Accordingly, the COS Science Team has allocated ~ 200 HST orbits of GTO time to map the baryon content of the local ``Cosmic Web'' in gas and galaxies. This semester, we propose to begin our southern hemisphere HYDRA spectroscopy (11 sight lines total), focusing on those sight lines that the COS Science Team has chosen to observe in HST Cycle 17. Multi-band CTIO Blanco 4-m MOSAIC imaging has already been obtained for the galaxy identifications and photo-z determinations necessary for our HYDRA setups.
Green James C.
Keeney Brian A.
Penton Steven Victor
Stocke John T.
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