Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-10-08
Astronomy and Astrophysics
Astrophysics
To appear in Nature, Vol 455, Oct 9 2008
Scientific paper
10.1038/nature07294
Recent studies of galaxies ~2-3 Gyr after the Big Bang have revealed large, turbulent rotating systems. The existence of well-ordered rotation in galaxies during this peak epoch of cosmic star formation may suggest that gas accretion through cold streams is likely to be the dominant mode by which most star-forming galaxies at high redshift since major mergers can completely disrupt the observed velocity fields. However poor spatial resolution and sensitivity have hampered this interpretation, limiting the study to the largest and most luminous galaxies, which may have fundamentally different modes of assembly than more typical star forming galaxies. Here we report observations of a typical star forming galaxy at z=3.07 with a linear resolution of ~100 parsec. This spatial sampling is made possible by the combination of gravitational lensing and laser guide star adaptive optics. We find a well-ordered compact source in which molecular gas is being converted efficiently into stars, likely assembling a spheroidal bulge and disk similar to those seen in spiral galaxies at the present day.
Dye Simon
Ellis Richard S.
Richard Johan
Smail Ian R.
Stark Daniel P.
No associations
LandOfFree
The formation and assembly of a typical star-forming galaxy at z~3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The formation and assembly of a typical star-forming galaxy at z~3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The formation and assembly of a typical star-forming galaxy at z~3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-30449