Dark Bursts: Signposts for Obscured High Redshift Star Formation Formation

Details Dark Bursts: Signposts for Obscured High Redshift Star Formation Formation Dark Bursts: Signposts for Obscured High Redshift Star Formation Formation

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005cxo..prop.1951b&link_type=abstract

Chandra Proposal ID #07500144

Physics

Chandra Proposal Id #07500144

Scientific paper

Dusty high redshift galaxies and their contribution to cosmic star formation, metal enrichment, and re-ionization are poorly characterized due to uncertain dust corrections in the optical/UV and the limited number of redshifts for submillimeter galaxies at z>3. The association of gamma-ray bursts with massive stars indicates that some GRBs should occur in such galaxies. Here we carefully select GRBs that occurred in dusty high redshift galaxies (z>3, A_V>2 mag, N_H>1e23 cm^-2), through direct evidence for severe obscuration of the optical/near-IR afterglow and the lack of radio emission. The proposed Chandra TOOs provide the sub-arcsec accuracy required for isolating the host galaxy from the multitude of faint galaxies expected within the Swift/XRT 10-arcsec diameter X-ray localization.

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