A Molecular Ring in the Liner Ngc 5218

Details A Molecular Ring in the Liner Ngc 5218 A Molecular Ring in the Liner Ngc 5218

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap%26ss.295..155o&link_type=abstract

Astrophysics and Space Science, Volume 295, Issue 1-2, pp. 155-160

Astronomy and Astrophysics

Astrophysics

Scientific paper

High resolution OVRO CO 1-0 observations of the inner 30″ in the LINER galaxy NGC 5218 reveal the presence of a double centrally peaked molecular concentration with extensions out to a radius of 12″. The molecular mass detected is 2.4 × 109 M&sun; and the gas surface density is high, ˜3000 M&sun; pc square in the inner 500 pc. The SFR is 2-3 M&sun; yr-1 and the SFE is ˜13, which are low or moderate values for that gas surface density. We interpret the inner feature as a rotating molecular ring with a radius of ˜ 200 pc. We furthermore suggest that the LINER activity in NGC 5218 is not caused by an aging starburst, but by a buried AGN.

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