Search for interstellar pyrrole and furan

Journal Article · Mon Dec 01 04:00:00 EST 1980 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/158488· OSTI ID:6524891

Kutner, M L; Machnik, D E; Tucker, K D; Dickman, R L

We report unsuccessful searches for the organic ring molecules pyrrole (C/sub 4/H/sub 4/N) and furan (C/sub 4/H/sub 4/O). In TMC-1, we find an upper limit to the pyrrole columm density of 4 x 10/sup 12/ cm/sup -2/, an order of magnitude less than the column density of HC/sub 5/N in this source. In Sgr B2, the upper limit to the pyrrole column density is 6 x 10/sup 13/ cm/sup -2/, about 0.4 times the HC/sub 5/N column density. These results suggest that chemical processes in these clouds favor the formation of chains over rings of comparable molecular weight. During these searches, a number of unidentified millimeter wavelength lines were also found; their frequencies are reported here.

• Research Organization: Physics Department, Rensselaer Polytechnic Institute
• OSTI ID: 6524891
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 242:2; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
AZOLES
CHEMICAL COMPOSITION
CHEMISTRY
COSMOCHEMISTRY
ELECTROMAGNETIC RADIATION
ENERGY SPECTRA
ENERGY-LEVEL TRANSITIONS
FUNCTIONS
FURANS
HETEROCYCLIC COMPOUNDS
INTERSTELLAR SPACE
MOLECULES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
PYRROLES
RADIATIONS
RADIOWAVE RADIATION
SPACE
SPECTRA
SPECTRAL DENSITY
SPECTRAL FUNCTIONS