A SiO 2-1 SURVEY TOWARD GAS-RICH ACTIVE GALAXIES

Junzhi Wang*, Jiangshui Zhang, Yong Shi, Zhiyu Zhang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In order to study the feedback from active galactic nuclei (AGNs), we performed a survey of SiO J = 2-1 (v = 0) transition toward ten gas-rich active galaxies with the IRAM 30 m telescope. As the first survey of SiO in such galaxies, we detected SiO J = 2-1 (v = 0) emission in six galaxies above the 3 sigma level and one galaxy (NGC 3690) at the 2.7 sigma level. The detection rate is not related to the AGN type or to star formation activity. In comparison with M82, which is a pure star-forming galaxy without nuclear activity, our SiO detections could not be completely ascribed to being due to star formation activity. This suggests that the AGN feedback may be efficient in producing SiO molecules in such galaxies. Further surveys with large single-dish millimeter telescopes and interferometers are necessary for understanding the origin of SiO in galaxies with nuclear activity.

Original languageEnglish
Article number39
Number of pages5
JournalAstrophysical Journal Letters
Volume778
Issue number2
DOIs
Publication statusPublished - 1 Dec 2013

Keywords

  • galaxies: active
  • galaxies: ISM
  • MOLECULAR GAS
  • RADIO-SOURCES
  • EMISSION
  • OUTFLOWS
  • SHOCKS
  • CHEMISTRY
  • AGN

Cite this