A mid- to far-infrared variability study of the intermediate Seyfert galaxy, MK 6

Details A mid- to far-infrared variability study of the intermediate Seyfert galaxy, MK 6 A mid- to far-infrared variability study of the intermediate Seyfert galaxy, MK 6

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.230..117c&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 230, Jan. 1, 1988, p. 117-120. Research supported by th

Astronomy and Astrophysics

Astronomy

4

Cosmic Dust, Far Infrared Radiation, Infrared Astronomy, Markarian Galaxies, Seyfert Galaxies, Variability, Infrared Astronomy Satellite, Thermal Radiation

Scientific paper

A mid- to far-infrared (MFIR) variability study of the intermediate Seyfert galaxy Mk 6 is presented using data from IRAS. A total of 25 observations of this source, covering a period of about 1 month, have been analyzed. Within the expected errors, the source shows no evidence for variability, and this may be an indication that there is a strong contribution to the MFIR emission from thermal reradiation by dust. This interpretation is consistent with previous studies which suggest that the bulk of the 30-100-micron emission in Seyfert galaxies originates from cool (35-75 K) dust associated with star-formation regions in the surrounding envelope of the active nucleus. The lack of variability at 12 and 25 microns can also be readily explained by dust emission. However, in this case, the dust temperatures required to produce emission at these wavelengths make the narrow-line region a more feasible location for the dust grains.

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