کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1780403 | 1523807 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Simulations of early galaxy formation
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
نجوم و فیزیک نجومی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present the predictions for the photometric and emission line properties of galaxies present during the latter stages of reionization from z = 8 â 6. These preliminary predictions are made from cosmological hydrodynamic simulations that include star formation and feedback, but not the effects of radiative transfer. We find significant numbers of galaxies that have stellar masses exceeding 108 Mâ by z = 8, with metallicities in the range of one-tenth solar. These galaxies are just beyond the reach of current near-infrared surveys, but should be found in large numbers by next-generation programs. The Lyα luminosity function does not evolve much from z = 6 to z = 8, meaning that it should also be possible to detect these objects in significant numbers with upcoming narrow band surveys, unless the escape fraction of Lyα evolves significantly between those epochs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Astronomy Reviews - Volume 50, Issues 1â3, March 2006, Pages 24-28
Journal: New Astronomy Reviews - Volume 50, Issues 1â3, March 2006, Pages 24-28
نویسندگان
Romeel Davé,