Spatial distribution of near infrared line radiation in galactic nuclei measured with Fabry-Perot spectrometer FAST

Details Spatial distribution of near infrared line radiation in galactic nuclei measured with Fabry-Perot spectrometer FAST Spatial distribution of near infrared line radiation in galactic nuclei measured with Fabry-Perot spectrometer FAST

Jun 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phdt.........9r&link_type=abstract

Thesis - Ludwig-Maximilians-Univ. Max-Planck-Inst. für Extraterrestrische Physik, Garching (Germany).

Physics

7

Emission Spectra, Fabry-Perot Spectrometers, Galactic Nuclei, Milky Way Galaxy, Near Infrared Radiation, Seyfert Galaxies, Bromine, Helium, Hydrogen Atoms, Line Spectra, Stellar Mass Accretion, Stellar Physics, Stellar Winds, Supernovae, X Rays

Scientific paper

A Fabri-Perot spectrometer for examination of astronomical objects with high spatial and spectral resolution is developed. Wide-band and circular variable filter were used for pre-decomposition. The measuring instrument was designed to be compatible with telescopes of varied aperture numbers and was equipped with a modular computer and cards for quick data transfer. The sensitivity was improved for optimization of surface detector representation methods. Results were obtained for the Seyfert-2 galaxy NGC 1068 and the Milky Way center, which supplied images of galactic nuclei in emission lines of varied atomic species. Seyfert-2 galaxy was recorded in Br-gamma recombination line of atomic hydrogen and of a quadrupole transfer of molecular hydrogen, whose emission has a cloud structure morphology. It can be concluded that galactic circumnuclear materials is aggregated in molecular clouds. A dozen compact sources were discovered in the Milky Way with broad helium emission lines. It can be deduced that luminosity is produced in galactic center through stars.

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