The Spatial Cross-Correlation of Damped Lyman-alpha Systems and Galaxies at z 3

Details The Spatial Cross-Correlation of Damped Lyman-alpha Systems and Galaxies at z 3 The Spatial Cross-Correlation of Damped Lyman-alpha Systems and Galaxies at z 3

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...20512901c&link_type=abstract

American Astronomical Society Meeting 205, #129.01; Bulletin of the American Astronomical Society, Vol. 36, p.1556

Astronomy and Astrophysics

Astronomy

Scientific paper

For the last 20 years, damped Lyman-alpha systems (DLAs) detected in quasar lines-of-sight have offered insight into protogalactic chemical abundances and gas kinematics, yet little is known about the mass of these systems and the population of galaxies they represent. We present a spectroscopic measurement of the cross-correlation of DLAs with Lyman break galaxies (LBGs) and apply this toward determining the average mass of DLAs at z ˜ 3. From a survey of 9 quasar fields, we use ˜ 200 LBG spectra (2.4 < z < 3.6) to cross-correlate with 10 known z ˜ 3 DLAs. The inferred average mass of DLAs is presented and a discussion of its implications.

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