AAS 204th Meeting, June 2004
Session 61 Structures in the Interstellar Medium
Poster, Wednesday, June 2, 2004, 10:00am-7:00pm, Ballroom

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[61.20] Validity of H2 Column Density as a Kinetic Temperature Tracer

G. Shaw, G. J. Ferland (University of Kentucky), P. Stancil (University of Georgia), R. Srianand (IUCAA)

Being the most abundant molecule, molecular hydrogen plays significant role in various astrophysical environments. In a dense medium the temperature derived from J=0 and J=1 rotational levels of molecular hydrogen is believed to trace kinetic temperature. Here we discuss our implementation of a complete model of the H2 molecule into the plasma simulation code Cloudy, and show in which parameters (density and flux) T10 traces the kinetic temperature. We also compare the 21cm spin temperature and temperature deduced from H2 column density along the line of sight of HD185418.

The author(s) of this abstract have provided an email address for comments about the abstract: gshaw@pa.uky.edu

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