On the Correlation between Spin Parameter and Halo Mass

Details On the Correlation between Spin Parameter and Halo Mass On the Correlation between Spin Parameter and Halo Mass

2008-01-29

arxiv.org/abs/0801.4453v1

Astronomy and Astrophysics

Astrophysics

7 pages, accepted for publication in ApJ

Scientific paper

10.1086/586702

We report on a correlation between virial mass M and spin parameter lambda for dark matter halos forming at redshifts z > 10. We find that the spin parameter decreases with increasing halo mass. Interestingly, our analysis indicates that halos forming at later times do not exhibit such a strong correlation, in agreement with the findings of previous studies. We briefly discuss the implications of this correlation for galaxy formation at high redshifts and the galaxy population we observe today.

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