Boxy/Peanut/X Bulges, Barlenses and the Thick Part of Galactic Bars: What Are They and How Did They Form? - Archive ouverte HAL Access content directly
Conference Papers Year : 2016

Boxy/Peanut/X Bulges, Barlenses and the Thick Part of Galactic Bars: What Are They and How Did They Form?

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Abstract

Bars have a complex three-dimensional shape. In particular their inner part is vertically much thicker than the parts further out. Viewed edge-on, the thick part of the bar is what is commonly known as a boxy-, peanut-, or X- bulge and viewed face-on it is referred to as a barlens. These components are due to disc and bar instabilities and are composed of disc material. I review here their formation, evolution and dynamics, using simulations, orbital structure theory and comparisons to observations.

Dates and versions

insu-03690640 , version 1 (08-06-2022)

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E. Athanassoula. Boxy/Peanut/X Bulges, Barlenses and the Thick Part of Galactic Bars: What Are They and How Did They Form?. Galactic Bulges, Astrophysics and Space Science Library, 0000, à renseigner, Unknown Region. pp.391, ⟨10.1007/978-3-319-19378-6_14⟩. ⟨insu-03690640⟩
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