Non-parametric reconstruction of distribution functions from observed galactic discs
نویسندگان
چکیده
منابع مشابه
Non-parametric reconstruction of distribution functions from observed galactic discs
Key words: methods: data analysis – methods: numerical – galaxies: general – galaxies: kinematics and dynamics. 1 I N T RO D U C T I O N In years to come, accurate kinematical measurement of nearby disc galaxies will be achievable with high-resolution spectroscopy. Measurement of the observed line profiles will yield relevant data with which to probe the underlying gravitational nature of the i...
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We show that spiral waves in galaxy discs churn the stars and gas in a manner that largely preserves the overall angular momentum distribution and leads to little increase in random motion. Changes in the angular momenta of individual stars are typically as large as ∼ 50% over the lifetime of the disc. The changes are concentrated around the corotation radius for an individual spiral wave, but ...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1998
ISSN: 0035-8711,1365-2966
DOI: 10.1046/j.1365-8711.1998.02026.x