Three Dimensional Structure of the Magellanic Bridge Explored by High-Resolution Spectroscopy of Multiple Sightlines.

Type Conference Paper
Names Paola Rodriguez Hidalgo, J. Charlton, T. Misawa, P. Richter, C. Kobulnicky, B. Wakker
Proceedings Title Bulletin of the American Astronomical Society
Conference Name American Astronomical Society, AAS Meeting #217, #345.04
Volume 43
Date January 1, 2011
Library Catalog NASA ADS
Abstract The Magellanic Bridge is a physical connection between the Large Magellanic Cloud and the Small Magellanic Cloud. It is known to contain a young stellar population that was probably formed in local molecular clouds. High column density of neutral hydrogen (H I) in the Magellanic Bridge also suggests it could be a local counterpart of Damped Lya (DLA) systems, mysterious H I gas reservoirs at high-z . We carry out an analysis of VLT/UVES spectroscopy of multiple sight-lines of the Magellanic Bridge toward QSOs/AGNs behind it, covering Ca II H, K lines and Na I D1, D2 lines. These measurements are essential to evaluate physical conditions of gas clouds in the Magellanic Bridge along multiple sight-lines derived from the photoionization models. The data provide the unique opportunity to study the three dimensional structure of a DLA analog in our Local Group.
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