B/PS bulges and barlenses from the kinematic viewpoint
Authors/Creators
- 1. Max-Planck-Institut für extraterrestrische Physik, Gießenbachstraße, D-85748 Garching, Germany
- 2. Dipartimento di Fisica e Astronomia "Galileo Galilei", Universita' degli studi di Padova, Vicolo dell'Osservatorio, 3, I-35122, Padova, Italy
- 3. St. Petersburg State University, Universitetskij pr. 28, 198504 St. Petersburg, Stary Peterhof, Russia
- 4. Central (Pulkovo) Astronomical Observatory of RAS, Pulkovskoye Chaussee 65/1, 196140 St. Petersburg, Russia
Description
Using a set of N-body models with different face-on bar morphology and edge-on B/PS bulges, we reproduce the kinematic features of barred galaxies seen in TIMER data. We focus on a particular case of NGC 7755, match it with our model that displays the barlens morphology and find that due to contamination by non-vertical velocity components, different components of the galaxy falling on the same line of sight and other inclination effects, the line-of-sight velocity distribution stops being a reliable indicator of the vertical density distribution features, such as the presence of the B/PS bulge. In addition, we observe the same ring of negative h4 parameter value minima independently of the presence of the barlens, thus confirming the lack of connection between these two features.
Notes
Files
Tikhonenko_poster_Granada.pdf
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(2.3 MB)
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