Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 380, Issue 1, Pages L49-L53Publisher
OXFORD UNIV PRESS
DOI: 10.1111/j.1745-3933.2007.00346.x
Keywords
galaxies : evolution; galaxies : formation; galaxies : high-redshift; large-scale structure of Universe
Categories
Ask authors/readers for more resources
Recently discovered large- scale structure of Lyman a emitters ( LAEs) raises a novel challenge to the cold dark matter ( CDM) cosmology. The structure is extended over more than 50 Mpc at redshift z = 3.1, and exhibits a considerably weak angular correlation. Such properties of LAE distributions appear to be incompatible with the standard biased galaxy formation scenario in the CDM cosmology. In this Letter, by considering the possibility that LAEs are short- lived events, we attempt to build up the picture of LAEs concordant with the CDM cosmology. We find that if the lifetime of LAEs is as short as ( 6.7 +/- 0.6) x 10(7) yr, the distributions of simulated galaxies successfully match the extension and morphology of large- scale structure of LAEs at z = 3.1, and also the weak angular correlation function. This result implies that LAEs at z = 3.1 do not necessarily reside in high density peaks, but tends to be located in less dense regions, in a different way from the expectation by the standard biased galaxy formation scenario. In addition, we make a prediction for the angular correlation function of LAEs at redshifts higher than 3. It is found that the prediction deviates from that made by the standard biased galaxy formation scenario even at redshifts 4 less than or similar to z less than or similar to 6.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available