Search for H2COH+, and H2-13CO in Dense Interstellar Molecular Clouds

Details Search for H2COH+, and H2-13CO in Dense Interstellar Molecular Clouds Search for H2COH+, and H2-13CO in Dense Interstellar Molecular Clouds

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jkas...26...99m&link_type=abstract

Journal of the Korean Astronomical Society, vol. 26, no. 2, p. 99-101

Astronomy and Astrophysics

Astronomy

2

Interstellar Medium, Abundance - Molecules

Scientific paper

We have searched for the 2 mm transitions of HCOH+ (2_02 - 1_01) and HTCO+ (2_02 - 1_01, 2_12 - 1_11, and 2_11 - 1_10) toward the dense interstellar molecular clouds Orion A, TMC-1 and L134N using the FCRAO 14 m telescope. None of the transitions have been detected except the HTCO+ transitions toward Orion-KL. We set upper limits for the abundances of the protonated formaldehyde ion (HCOH+), which are close to the abundances expected from ion-molecule chemistry.

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