Computer Science
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990nascp3084..340l&link_type=abstract
In NASA, Ames Research Center, The Interstellar Medium in External Galaxies: Summaries of Contributed Papers p 340-342 (SEE N91-
Computer Science
Infrared Spectrometers, Infrared Spectroscopy, Interstellar Gas, Near Infrared Radiation, Starburst Galaxies, Excitation, Extinction, Hydrogen, Observatories, Populations, Spectral Bands, Stars, Superhigh Frequencies
Scientific paper
Researchers used the McDonald Observatory Infrared Grating Spectrometer, to complete a program of spatially resolved spectroscopy of M82. The inner 300 pc of the starburst was observed with 4 inch (50 pc) resolution. Complete J, H and K band spectra with resolution 0.0035 micron (lambda/delta lambda=620 at K) were measured at the near-infrared nucleus of the galaxy. Measurements of selected spectral features including lines of FeII, HII and H2 were observed along the starburst ridge-line, so the relative distribution of the diagnostic features could be understood. This information was used to better define the extinction towards the starburst region, the excitation conditions in the gas, and to characterize the stellar populations there.
Carr John
Gaffney Niall
Joy Marshall
Lester Dan F.
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