Building galaxies by accretion and in situ star formation
نویسندگان
چکیده
منابع مشابه
Building galaxies by accretion and in situ star formation
We examine galaxy formation in a cosmological adaptive mesh refinement simulation, which includes two high-resolution boxes, one centred on a 3 × 1014 M cluster, and one centred on a void. We examine the evolution of 611 massive (M∗ > 1010 M ) galaxies. We find that the fraction of the final stellar mass which is accreted from other galaxies is between 15 and 40 per cent and increases with stel...
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This thesis is devoted to star formation from galaxy-scales (≈ 10 000 pc) to sub-star cluster-scales (≈ 0.1 pc). I develop and test a new method to derive star formation histories of Galaxies from their star cluster content, in particular the most massive star clusters. This is followed by an application of this method to the Large Magellanic Cloud, where the results of this new method are conf...
متن کاملStar clusters as building blocks for dSph galaxies formation
We study numerically the formation of dSph galaxies. Intense star bursts, e.g. in gas-rich environments, typically produce a few to a few hundred young star clusters, within a region of just a few hundred pc. The dynamical evolution of these star clusters may explain the formation of the luminous component of dwarf spheroidal galaxies (dSph). Here we perform a numerical experiment to show that ...
متن کاملStar Formation in Ring Galaxies
Ring galaxies are specific types of interacting galaxies in which a smaller galaxy has passed through the center of the disk of another larger galaxy. The intrusion of the smaller galaxy causes the structure of the larger galaxy to compress as the smaller galaxy falls through, and to recoil back after the smaller galaxy passes through, hence the ring-like shape. In our research, we studied the ...
متن کاملStar Formation in Satellite Galaxies
We present narrow-band observations of the Hα emission in a sample of 31 satellite orbiting isolated giant spiral galaxies. The sample studied spans the range −19 < MB < −15 mag. The Hα emission was detected in all the spiral and irregular objects with fluxes in the range 1.15 − 49.80 × 10 erg cm s. The average and maximum values for the current star formation rates are 0.68 and 3.66 M⊙ yr −1 r...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2012
ISSN: 0035-8711
DOI: 10.1111/j.1365-2966.2012.21525.x