Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...529..875p&link_type=abstract
The Astrophysical Journal, Volume 529, Issue 2, pp. 875-885.
Astronomy and Astrophysics
Astronomy
7
Galaxies: Individual (Ngc 3079, Ngc 3227, Ngc 4051, Ngc 5033), Galaxies: Seyfert, Infrared: Galaxies
Scientific paper
Far-IR Infrared Space Observatory (ISO) maps of four Seyfert galaxies are presented and compared with their optical counterpart images. The far-IR maps resemble the optical images of these galaxies when degraded to the ISO resolution. The spatial extension of the far-IR maps is also comparable to the optical extension of these objects, an indication of the extended nature of their far-IR emission. The 90 μm intensity profiles of these galaxies show that there is a disk component noticeable in the far IR. NGC 3079 shows a 90 μm halo extending far out of the galaxy plane. NGC 4051 shows a dark molecular cloud whose far-IR output could be as large as that of the active nucleus itself, demonstrating that very bright IR sources other than the active nucleus may be responsible for a large fraction of the far-IR emission in some Seyfert galaxies. Based on observations made with ISO, an ESA project with instruments funded by ESA member states (especially the PI countries: France, Germany, the Netherlands, and the United Kingdom) and with the participation of ISAS and NASA.
Fuensalida Jesus J.
Perez Garcia Angeles M.
Rodriguez Espinosa Jose Miguel
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