Hostname: page-component-76fb5796d-wq484 Total loading time: 0 Render date: 2024-04-27T05:06:07.163Z Has data issue: false hasContentIssue false
  • English
  • Français

Molecular gas in spiral galaxy centers

Published online by Cambridge University Press:  04 October 2008

C. Kramer ,
S. Aalto ,
R. Simon  and
F.P. Israel
F.P. Israel*
Affiliation:
Sterrewacht Leiden, Postbus 9513, 2300 RA Leiden, The Netherlands
Get access

Abstract

Multiline 12CO and 13CO measurements of a large sample of galaxy centers reveal the physical conditions of the pronounced central molecular gas concentrations in spiral galaxies. The molecular gas occurs in at least two components: hot and relatively tenuous, dense and relatively cool. Most of the gas mass is in the former component. Molecular gas is strongly concentrated within in a few hundred parsec from the nucleus, but the central few dozen parsecs are frequently gas-poor. The CO-to-H2 conversion factor is three to ten times lower in galaxy centers than in the Milky Way disk.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 31: Far-Infrared Workshop 2007 , 2008 , pp. 89 - 92
Copyright
© EAS, EDP Sciences, 2008

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)