An upper limit to the acetylene abundance toward BN in the Orion molecular cloud.
We report a search for the acetylene (C2H2) nu 3 infrared vibration-rotation absorption near 3 micrometers toward the Becklin-Neugebauer source in the Orion molecular cloud.  The relative abundance of C2H2/CO in the quiescent gas (9 km s-1 component) is less than 3 x 10(-3) (5 sigma).
Knacke
R F
RF
State University of New York at Stony Brook, USA.
Kim
Y H
YH
Irvine
W M
WM
D000114:Acetylene / Q000032:analysis* / Q000737:chemistry; D055580:Astronomical Phenomena; D001256:Astronomy; D002248:Carbon Monoxide; D055598:Chemical Phenomena; D002621:Chemistry; D005118:Extraterrestrial Environment; D007259:Infrared Rays; D016081:Moon; D013057:Spectrum Analysis
D002248:Carbon Monoxide; D000114:Acetylene