Box- and peanut-shaped bulges
نویسندگان
چکیده
منابع مشابه
Box - and peanut - shaped bulges ⋆
We have observed 60 edge-on galaxies in the NIR in order to study the stellar distribution in galaxies with box/peanut-shaped bulges. The much smaller amount of dust extinction at these wavelengths allows us to identify in almost all target galaxies with box/peanut-shaped bulges an additional thin, central component in cuts parallel to the major axis. This structure can be identified with a bar...
متن کاملBox - and peanut - shaped bulges ? II . NIR observations
We have observed 60 edge-on galaxies in the NIR in order to study the stellar distribution in galaxies with box/peanut-shaped bulges. The much smaller amount of dust extinction at these wavelengths allows us to identify in almost all target galaxies with box/peanut-shaped bulges an additional thin, central component in cuts parallel to the major axis. This structure can be identified with a bar...
متن کاملEstablishing the Connection between Peanut-shaped Bulges and Galactic Bars
It has been suggested that the peanut-shaped bulges seen in some edge-on disk galaxies are due to the presence of a central bar. Although bars cannot be detected photometrically in edge-on galaxies, we show that barred potentials produce a strong kinematic signature in the form of double-peaked line-of-sight velocity distributions with a characteristic “figure-ofeight” variation with radius. We...
متن کاملConfirmation of a Kinematic Diagnostic for Face - On Box / Peanut - Shaped Bulges
We present the results of high resolution absorption-line spectroscopy of 3 face-on galaxies, NGC 98, NGC 600, and NGC 1703 with the aim of searching for box/peanut (B/P)-shaped bulges. These observations test and confirm, for the first, time the prediction that face-on B/P-shaped bulges can be recognized by two minima in the profile along the bar’s major axis of the fourth Gauss-Hermite moment...
متن کاملThe Kinematic Signature of Face-On Peanut-Shaped Bulges
We present a kinematic diagnostic for peanut-shaped bulges in nearly face-on galaxies. The face-on view provides a novel perspective on peanuts which would allow study of their relation to bars and disks in greater detail than hitherto possible. The diagnostic is based on the fact that peanut shapes are associated with a flat density distribution in the vertical direction. We show that the kine...
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ژورنال
عنوان ژورنال: Astronomy and Astrophysics Supplement Series
سال: 2000
ISSN: 0365-0138,1286-4846
DOI: 10.1051/aas:2000354