High-Resolution H_2 images of selected nuclear starbursts

Details High-Resolution H_2 images of selected nuclear starbursts High-Resolution H_2 images of selected nuclear starbursts

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7251b&link_type=abstract

HST Proposal ID #7251

Physics

Hst Proposal Id #7251 Galaxies

Scientific paper

We have been pursuing a long-term project to study the molecular environments for star-forming activity in the centers of mergers and interacting galaxies. These systems are known from ground-based spectroscopy to exhibit strong H_2 line emission. We select two targets of different strength of dynamical interaction. At V=2800 km/s for NGC 3256, the H_2 2.121, [Fe II] 1.644, and H I Paschen-α 1.875 lines are all shifted into the corresponding narrow-band continuum filters, although H I is very near the half-power point of the filter. For the nucleus of this galaxy, we will obtain high-resolution images in all 3 lines. Parallel exposures with the 2 secondary NICMOS cameras will be used to map H I Paschen-α over a larger area surrounding the nucleus.

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