The unusual 8-13 micron spectrum of Markarian 231

Details The unusual 8-13 micron spectrum of Markarian 231 The unusual 8-13 micron spectrum of Markarian 231

Jun 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...281l..17b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 281, June 1, 1984, p. L17-L19.

Astronomy and Astrophysics

Astronomy

6

Astronomical Spectroscopy, Infrared Astronomy, Seyfert Galaxies, Infrared Spectra, Red Shift, Silicates

Scientific paper

An 8 - 13 μm spectrum was obtained of the Seyfert galaxy Markarian 231 with a spectral resolution of 0.22 μm per point. The spectrum is unlike any previously published spectrum at these wavelengths. The spectrum can be attributed to a combination of absorption and reemission by crystalline silicates which must have formed under conditions quite different from those in which silicates form in our Galaxy. Comparison of the data with previously published data indicates that the infrared emission is extended and not dominated by a bright central source.

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