Building galaxies by accretion and in situ star formation

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

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...

متن کامل

Star formation in galaxies and star clusters

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 کامل

Star 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 کامل

Star 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 کامل

Star 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...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Monthly Notices of the Royal Astronomical Society

سال: 2012

ISSN: 0035-8711

DOI: 10.1111/j.1365-2966.2012.21525.x