Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234..471m&link_type=abstract
Astrophysical Journal, Part 1, vol. 234, Dec. 1, 1979, p. 471-476. Research supported by the University of Toronto and National
Astronomy and Astrophysics
Astronomy
70
Infrared Astronomy, Near Infrared Radiation, Seyfert Galaxies, X Ray Sources, Astronomical Photometry, Broadband, Line Spectra, Spectral Line Width
Scientific paper
The paper presents near-infrared photometric observations of 16 Seyfert galaxies and three narrow-line emission galaxies. Included in this sample are seven X-ray Seyferts. The Seyfert 2 galaxies observed are dominated by a stellar continuum, as are the narrow-line emission galaxies. Most of the Seyfert 1 galaxies have power-law spectra in the near-infrared, but some show only a stellar continuum. All the X-ray Seyferts show nonstellar emission, and all but one have power-law spectra. For these galaxies, the 3.6 micron flux density correlates with the observed 2-10 keV flux. The slope of the near-infrared continuum of NGC 4151 can be used in conjunction with the model of Manchanda et al. (1978) to support an inverse Compton process for the X-ray emission.
Crabtree Dennis Richard
McAlary Christopher Walter
McLaren Robert A.
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