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- W2314168051 startingPage "3843" @default.
- W2314168051 abstract "Barred galaxies have interesting morphological features whose presence and properties set constraints on galactic evolution. Here we examine barlenses, i.e. lens-like components whose extent along the bar major axis is shorter than that of the bar and whose outline is oval or circular. We identify and analyse barlenses in $N$-body plus SPH simulations, compare them extensively with those from the NIRS0S (Near-IR S0 galaxy survey) and the S$^4$G samples (Spitzer Survey of Stellar Structure in Galaxies) and find very good agreement. We observe barlenses in our simulations from different viewing angles. This reveals that barlenses are the vertically thick part of the bar seen face-on, i.e. a barlens seen edge-on is a boxy/peanut/X bulge. In morphological studies, and in the absence of kinematics or photometry, a barlens, or part of it, may be mistaken for a classical bulge. Thus the true importance of classical bulges, both in numbers and mass, is smaller than currently assumed, which has implications for galaxy formation studies. Finally, using the shape of the isodensity curves, we propose a rule of thumb for measuring the barlens extent along the bar major axis of moderately inclined galaxies, thus providing an estimate of which part of the bar is thicker." @default.
- W2314168051 created "2016-06-24" @default.
- W2314168051 creator A5009174227 @default.
- W2314168051 creator A5014727741 @default.
- W2314168051 creator A5051204592 @default.
- W2314168051 creator A5066380292 @default.
- W2314168051 date "2015-10-23" @default.
- W2314168051 modified "2023-10-16" @default.
- W2314168051 title "On the nature of the barlens component in barred galaxies: what do boxy/peanut bulges look like when viewed face-on?" @default.
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- W2314168051 doi "https://doi.org/10.1093/mnras/stv2231" @default.
- W2314168051 hasPublicationYear "2015" @default.
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