Modelling galactic spectra - II. Simultaneous study of stellar dynamics and stellar mix in NGC 3258
نویسندگان
چکیده
منابع مشابه
Gas and stellar dynamics in NGC 1068. Probing the galactic gravitational potential
We present SAURON integral field spectrography of the central 1.5 kpc of the nearby Seyfert 2 galaxy NGC 1068, encompassing the well-known near-infrared inner bar observed in the K band. We have successively disentangled the respective contributions of the ionized gas and stars, thus deriving their two-dimensional distribution and kinematics. The [Oiii] and Hβ emission lines exhibit very differ...
متن کاملSimultaneous Modelling of the Stellar Halo and Globular Cluster System of NGC 5128
An important test for models of galaxy formation lies in the metallicity distribution functions (MDFs) of spheroid stars and their globular clusters (GCs). We have compared the MDFs obtained from spectroscopy of the GCs and the star-by-star photometry of the old halo red giants in the nearby elliptical galaxy NGC 5128, with the predictions of a ΛCDM semi-analytic galaxy formation model. We have...
متن کاملSimultaneous Orbit Fitting of Stellar Streams: Constraining the Galactic Dark
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متن کاملGalactic Stellar Populations
The history of the formation and evolution of the Milky Way Galaxy is found in the spatial distribution, kinematics, age and chemical abundance distributions of long-lived stars. From this fossil record one can in principle extract the star formation histories of different components, their chemical evolution, the stellar Initial Mass Function, the merging history – what merged and when did it ...
متن کاملStellar Dynamics in the Galactic centre: Proper Motions and Anisotropy
ABSTRACT We report a new analysis of the stellar dynamics in the Galactic centre, based on improved sky and line-of-sight velocities for more than one hundred stars in the central few arcseconds from the black hole candidate SgrA*. The main results are: • Overall the stellar motions do not deviate strongly from isotropy. For those 32 stars with a determination of all three velocity components t...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2004
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2004.07496.x