The Warped Gas and Dust Lane in NGC 3718

Details The Warped Gas and Dust Lane in NGC 3718 The Warped Gas and Dust Lane in NGC 3718

2003-10-15

arxiv.org/abs/astro-ph/0310419v1

Astrophysics and Space Science 284 (2003) p.511-514

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures, contribution to the "Eurokiel 2002: Galaxy Evolution III: From Simple Models to Self Consistant Approaches

Scientific paper

10.1023/A:1024064512904

We present the first observations of molecular line emission in NGC 3718 with the IRAM 30m and the Plateau de Bure Interferometer. This galaxy is an impressive example for a strongly warped gas disk harboring an active galactic nucleus (AGN). An impressive dust lane is crossing the nucleus and a warp is developing into a polar ring. The molecular gas content is found to be typical of an elliptical galaxy with a relatively low molecular gas mass content (~4*10^8 Msun). The molecular gas distribution is found to warp from the inner disk together with the HI distribution. The CO data were also used to improve the kinematic modeling in the inner part of the galaxy, based on the so-called "tilted ring"-model. The nature of NGC 3718 is compared with its northern sky ``twin'' Centaurus A and the possible recent swallowing of a small-size gas-rich spiral is discussed.

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