Infrared broad emission lines from an obscured quasar, IRAS 23060 + 0505

Details Infrared broad emission lines from an obscured quasar, IRAS 23060 + 0505 Infrared broad emission lines from an obscured quasar, IRAS 23060 + 0505

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...375l...1n&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 375, July 1, 1991, p. L1-L4. Research supported by Monbusho Inter

Astronomy and Astrophysics

Astronomy

20

Infrared Astronomy Satellite, Infrared Spectra, Quasars, Seyfert Galaxies, Spectral Line Width, Emission Spectra, Galactic Nuclei, Line Spectra

Scientific paper

Pa-alpha and Pa-beta spectra of IRAS 23060 + 0505 exhibit line widths that are greater at longer wavelengths. The broad wing of Pa-alpha, which is clearly dominated by the broad component, extends to at least 5000 km/sec. The difference between the broad and narrow line extinctions must be caused by dust in the inner NLR, or throughout the NLR, which is seen in warm thermal emission whose temperature ranges from a few hundred to 800 K. It is suggested that the broad line extinction affects both the optical appearance and the temperature distribution of the IR thermal emission through the reduction of the UV light from the central continuum source into the NLR.

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