Molecular abundances in the Sagittarius A molecular cloud

Details Molecular abundances in the Sagittarius A molecular cloud Molecular abundances in the Sagittarius A molecular cloud

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...258..489m&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 258, no. 2, p. 489-494.

Astronomy and Astrophysics

Astrophysics

19

Gas-Ion Interactions, Interstellar Chemistry, Interstellar Gas, Molecular Clouds, Sagittarius Constellation, Abundance, Carbon Monoxide, Ethyl Alcohol, Formaldehyde, Formic Acid, Milky Way Galaxy

Scientific paper

We have obtained column densities for HCO(+), HCO, HCS(+), C3H2, HC5N, SiO, OCS, HCOOH, CH3CH2OH, and CH3CCH toward Sgr A. The fractional abundance of SiO relative to molecular hydrogen in Sgr A is comparable to that for the Orion plateau, about 10 exp-7 to 10 exp -8, which may be a typical value for hot clouds. The abundances of HCO, CH3CH2OH, and CH3CCH all appear to be enhanced relative to other molecular clouds such as Sgr B2.

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