Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21541219c&link_type=abstract
American Astronomical Society, AAS Meeting #215, #412.19; Bulletin of the American Astronomical Society, Vol. 42, p.249
Astronomy and Astrophysics
Astronomy
Scientific paper
VLA multi-configuration (BnA, CnB) HI spectral line observations of IRAS 08339+6517 and Tol 1924-416 are presented. Previous HI observations by Cannon et al. (2004) showed that both of these starburst galaxies are strongly interacting with nearby companions. The observed Ly-α emission line from both systems favors a scenario where kinematic offsets of the neutral gas surrounding the starburst region decrease the efficiency of resonant scattering and allow the propagation of these photons through the ISM. To further investigate this scenario, we now present higher sensitivity, higher resolution HI spectral line imaging of these systems. These data add further evidence that the small-scale kinematic properties of the ISM in starburst galaxies are an important factor that governs the escape fraction of Ly-α photons from galaxies.
Cannon John M.
Meitzner Seth
Skillman Evan
Walter Fabian
Weindling Jacob
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