Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'500'096
Articles rated: 2609

18 April 2024

» arxiv » astro-ph/0502246

Article overview

Towards an understanding of the rapid decline of the cosmic star formation rate
Eric F. Bell ; Casey Papovich ; Christian Wolf ; Emeric Le Floc’h ; John A. R. Caldwell ; Marco Barden ; Eiichi Egami ; Daniel H. McIntosh ; Klaus Meisenheimer ; Pablo G. P. Perez-Gonzalez ; George H. Rieke ; Marcia J. Rieke ; Jane R. Rigby ; Hans-Walter Rix ;
Date:	12 Feb 2005
Journal:	Astrophys.J. 625 (2005) 23-36
Subject:	astro-ph
Abstract:	We present a first analysis of deep 24 micron observations with the Spitzer Space Telescope of a sample of nearly 1500 galaxies in a thin redshift slice, 0.652x10^10 solar masses) are undergoing a period of intense star formation above their past-averaged SFR. In contrast, less than 1% of equally-massive galaxies in the local universe have similarly intense star formation activity. Morphologically-undisturbed galaxies dominate the total infrared luminosity density and SFR density: at z~0.7, more than half of the intensely star-forming galaxies have spiral morphologies, whereas less than ~30% are strongly interacting. Thus, a decline in major-merger rate is not the underlying cause of the rapid decline in cosmic SFR since z~0.7. Physical properties that do not strongly affect galaxy morphology - for example, gas consumption and weak interactions with small satellite galaxies - appear to be responsible.
Source:	arXiv, astro-ph/0502246
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap