Mid-infrared interferometry of Seyfert galaxies: Challenging the Standard Model
نویسندگان
چکیده
منابع مشابه
High Spatial Resolution Mid-infrared Observations of Three Seyfert Galaxies
Images at 12.5 lm of nuclei of three nearby Seyfert galaxies—NGC 1275, NGC 4151, and NGC 7469— have been obtained with the 10 m Keck Telescope. NGC 7469 is resolved and deconvolution delineates a structure (<0>04) 0>08, or less than 13 26 pc at a position angle of 135 . From a comparison with structure seen at millimeter wavelengths, this structure is interpreted as a disk aligned with the mole...
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We present optical spectra for new infrared Seyfert galaxies obtained with the 2.16m telescope at Bei-jing Astronomical Observatory (BAO). After wavelength and flux calibration, they are classified by the degree of nuclear activity: nine Seyfert 2 and three Seyfert 3 galaxies. In addition, by using the data from de Grijp et al.(1992), we find that (1) there exists a tight correlation between lu...
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Results from near-infrared 1.5 – 2.5 µm long-slit spectroscopy of 14 nearby Seyfert galaxies are presented.
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The mid infrared polarisation properties of four Ultraluminous Infrared Galaxies (ULIRGs) have been investigated by broad band filter observations with the ISOCAM instrument on board the Infrared Space Observatory (ISO). The wavelength region from 5 to 18μm was selected where the emission from the putative torus peaks. We report detection of polarisation for all ULIRGs studied. The fractional p...
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The mid-infrared spectra (2.5-5 and 5.7-11.6 µm) obtained by ISOPHOT reveal the interstellar medium emission from galaxies powered by star formation to be strongly dominated by the aromatic features at 6.2, 7.7, 8.6, and 11.3 µm. Additional emission appears in between the features, and an underlying continuum is clearly evident at 3-5 µm. This continuum would contribute about a third of the lum...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2016
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361/201527149