HI Emission From the Seyfert Galaxies NGC 4051 and NGC 6814

Astronomy and Astrophysics – Astronomy

Scientific paper

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Galaxies: Seyfert, Galaxies: Individual: Ngc 4051, Galaxies: Individual: Ngc 6814, Radio Lines: Galaxies

Scientific paper

We used the VLA-D configuration to synthesize the spatial distribution of λ 21 cm emission from the well-known Seyfert galaxies NGC 4051 and 6814. Both systems are characterized by an annular distribution of atomic gas but that in 4051 is generally much more regular, and more nearly contiguous with the optical image; still, it may be warped at large radii, as evidenced by the presence of a second, weaker kinematic component along the major axis. The gas disk of NGC 6814 is much larger than the optical image, which sits entirely within the central H I depression, and is substantially kinematically warped outside the optical image in the main body of the galaxy.

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