Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· arXiv e-print (arXiv:astro-ph/0607409)
· References in the article
· Citations to the Article (23) (Citation History)
· Refereed Citations to the Article
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Early structure formation in quintessence models and its implications for cosmic reionization from first stars
Authors:
Maio, U.; Dolag, K.; Meneghetti, M.; Moscardini, L.; Yoshida, N.; Baccigalupi, C.; Bartelmann, M.; Perrotta, F.
Affiliation:
AA(Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Strasse 1, D-85748 Garching bei München, Germany; Dipartimento di Astronomia, Università di Bologna, via Ranzani 1, I-40127 Bologna, Italy), AB(Max-Planck-Institut für Astrophysik, Karl-Schwarzschild Strasse 1, D-85748 Garching bei München, Germany), AC(Zentrum für Astronomie, ITA, Universität Heidelberg, Albert-Überle-Strasse 2, D-69120 Heidelberg, Germany; INAF, Osservatorio Astronomico di Bologna, via Ranzani 1, I-40127 Bologna, Italy), AD(Dipartimento di Astronomia, Università di Bologna, via Ranzani 1, I-40127 Bologna, Italy; INFN, Sezione di Bologna, viale Berti Pichat 6/2, I-40127 Bologna, Italy), AE(Department of Physics, Nagoya University, Nagoya, Aichi 464-8602, Japan), AF(Zentrum für Astronomie, ITA, Universität Heidelberg, Albert-Überle-Strasse 2, D-69120 Heidelberg, Germany; SISSA/ISAS, via Beirut 4, I-34014 Trieste, Italy; INFN, Sezione di Trieste, via Valerio 2, I-34127 Trieste, Italy), AG(Zentrum für Astronomie, ITA, Universität Heidelberg, Albert-Überle-Strasse 2, D-69120 Heidelberg, Germany), AH(Zentrum für Astronomie, ITA, Universität Heidelberg, Albert-Überle-Strasse 2, D-69120 Heidelberg, Germany; SISSA/ISAS, via Beirut 4, I-34014 Trieste, Italy; INFN, Sezione di Trieste, via Valerio 2, I-34127 Trieste, Italy)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 373, Issue 2, pp. 869-878. (MNRAS Homepage)
Publication Date:
12/2006
Origin:
MNRAS
Astronomy Keywords:
galaxies: formation, cosmology: theory, early Universe
DOI:
10.1111/j.1365-2966.2006.11090.x
Bibliographic Code:
2006MNRAS.373..869M

Abstract

We present the first hydrodynamic N-body simulations of primordial gas clouds responsible for the reionization process in dark energy cosmologies. We compare the cosmological constant scenario with a SUGRA quintessence model with marked dynamics in order to highlight effects due to the different acceleration histories imposed by the dark energy. We show that both the number density of gas clouds and their clumpiness keep a record of the expansion rate during evolution, similar to the non-linear dark matter profile at virialization, as was recently demonstrated by Dolag et al. Varying the shape of the primordial power spectrum, we show how this effect is mitigated by a running spectral index decreasing the power at small scales. Our results demonstrate that, in order to constrain the dark energy from large-scale structures, one must track its effects down to the distribution of luminous matter.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences


More Article Retrieval Options

HELP for Article Retrieval
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints