The First Compact Objects in the $Λ$-dominated Universe

Details The First Compact Objects in the $Λ$-dominated Universe The First Compact Objects in the $Λ$-dominated Universe

2002-12-05

arxiv.org/abs/astro-ph/0212134v1

Mon.Not.Roy.Astron.Soc. 339 (2003) 616

Astronomy and Astrophysics

Astrophysics

LaTeX 2e, 7 pages, 9 figures, to appear in MNRAS, uses mn2e style (included) with graphicx and natbib (included) packages

Scientific paper

10.1046/j.1365-8711.2003.06200.x

We calculate the evolution of a low-mass ($M \le 10^5 M_{\odot}$) spherically symmetric density perturbation in the $\Omega_b h^2=0.02$, $\Omega_M =0.35$, $\Omega_{\Lambda}=0.65$, $h=0.72$ Universe. The results are compared with the ones that assume no cosmological constant and the flat, dark matter dominated Universe. We include thermal processes and non-equilibrium chemical evolution of the collapsing gas. We find that direct formation of bound objects with such masses by $z=8$ is unlikely so in fact they may form only through fragmentation of greater objects. This is in stark contrast to the $\Omega=1$ pure CDM cosmology, where low-mass objects form abundantly at redshits $z>10$.

Affiliated with

Also associated with

No associations

Rating

The First Compact Objects in the $Λ$-dominated Universe 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 First Compact Objects in the $Λ$-dominated Universe, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The First Compact Objects in the $Λ$-dominated Universe will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-702648