Measuring the Dust-to-gas Ratio of High Redshift Galaxies

Details Measuring the Dust-to-gas Ratio of High Redshift Galaxies Measuring the Dust-to-gas Ratio of High Redshift Galaxies

Sep 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006cxo..prop.2256d&link_type=abstract

Chandra Proposal ID #08610308

Mathematics

Logic

Chandra Proposal Id #08610308

Scientific paper

We propose to observe the differential X-ray absorption in two gravitational lenses with significant optical extinctions. By combining the X-ray and optical differential absorption measurements, we will accurately measure the dust-to-gas ratio of the two cosmologically distant lens galaxies. Combining these new measurements with four earlier measurements, we will test whether the dust-to-gas ratio evolves with redshift as predicted by simulations of dust formation and evolution. Such information is to understanding galaxy and star formation and evolution in the presence of an absorbing ISM.

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