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

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 3σ level and one galaxy (NGC 3690) at the 2.7σ 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.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030 (China)
  2. Center For Astrophysics, GuangZhou University, GuangZhou 510006 (China)
  3. School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)
  4. Purple Mountain Observatory, CAS, 2 West Beijing Road, Nanjing 210008 (China)
Publication Date:
OSTI Identifier:
22364109
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal Letters; Journal Volume: 778; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTRONOMY; ASTROPHYSICS; COMPARATIVE EVALUATIONS; DETECTION; EMISSION; FEEDBACK; GALAXIES; GALAXY NUCLEI; INTERFEROMETERS; MOLECULES; ORIGIN; SILICON OXIDES; STARS; TELESCOPES