Other
Scientific paper
Feb 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008noao.prop...86k&link_type=abstract
NOAO Proposal ID #2008A-0086
Other
Scientific paper
The Cosmic Origins Spectrograph (COS) will be installed aboard HST in August, 2008. 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), its baryon content, metallicity, and relationship to galaxies. The COS Science Team has allocated ~ 200 HST orbits of GTO time to map the baryon content of the local Universe in galaxies and gas...the ``Cosmic Web''. We propose to acquire HYDRA spectra of all galaxies brighter than g=20 with photo-z's < z_AGN that are within 20 arcmin of the 39 AGN targeted by the COS Science Team. This makes our survey complete to L < L^* for z ≲ 0.3. These data, along with intergalactic Lyα and metal-line absorbers discovered in the COS far- UV spectra, will allow us to assess the extent of metal transport from galaxies, the filling factor of metal-enriched gas in filaments, and the metallicity of gas in voids. Multi-filter MOSAIC images are required for 18 of our 39 sight lines to select spectroscopic targets (the other 21 sight lines have SDSS imaging available).
Green James C.
Keeney Brian A.
Penton Steven Victor
Stocke John T.
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