Spectroscopic Archive Legacy Survey of the Cosmic Web

Details Spectroscopic Archive Legacy Survey of the Cosmic Web Spectroscopic Archive Legacy Survey of the Cosmic Web

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008hst..prop11773s&link_type=abstract

HST Proposal ID #11773. Cycle 17

Astronomy and Astrophysics

Astronomy

Scientific paper

We propose a one-year HST {and FUSE} Legacy Archive Program on the low-redshift IGM, associated galaxies, and interstellar high-velocity clouds {HVCs}. We will produce a uniformly reduced, carefully analyzed set of spectra of extragalactic sources {AGN}, based on observations made through 2004. These data are the highest quality, low-z quasar absorption-line {QAL} spectra, needed to guide plans for COS spectrographic research on the intergalactic medium {IGM} and Galactic HVCs. A comprehensive QAL database will provide the following benefits to the astronomical community: {1} Joint analysis of HST and FUSE absorbers in the low-z IGM and HVCs; {2} Measurements of the IGM baryon content, metallicity, and ionization state; {3} Probes of the thermal phases of IGM and HVC gas; {4} IGM signposts {Ly-alpha, Ly-beta, O VI} for future UV and X-ray surveys of the cosmic web. Our survey will also assist in designing an HST Community Treasury Project, to survey quasar absorbers and intervening galaxy halos with COS.;

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