English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present the first galactic-scale model of the gas dynamics of theprototype barred Seyfert 1 galaxy NGC1097. We use large scale FaNTOmMFabry-Perot interferometric data covering the entire galactic disc and combinethe distribution and kinematics maps with high resolution two-dimensionalspectroscopy from the Gemini telescope. We build a dynamical model for thegravitational potential by applying the analytic solution to the equations ofmotion, within the epicyclic approximation. Our model reproduces all thesignificant kinematic and structural signatures of this galaxy. We find thatthe primary bar is 7.9+/-0.6 kpc long and has a pattern speed of 36 +/- 2 kms^-1 kpc^-1. This places the corotation radius at 8.6 +/-0.5 kpc, the outerLindblad resonance at 14.9+/-0.9 kpc and two inner Lindblad resonances at60+/-5 pc and 2.9+/-0.1 kpc. These derivations lead to a ratio of thecorotation radius over bar length of 1.0--1.2, which is in agreement with thepredictions of simulations for fast galaxy bars. Our model presents evidencethat the circumnuclear ring in this galaxy is not located near any of theresonance radii in this galaxy. The ring might have once formed at the outerinner Lindblad resonance radius, and it has been migrating inward, toward thecentre of the galactic gravitational potential.

Bar pattern speed and position of the circumnuclear ring in NGC 1097