Studies of interstellar formamide

Journal Article · Fri Jun 15 04:00:00 EDT 1973 · Astrophys. J., v. 182, no. 3, pp. 699-710

DOI:https://doi.org/10.1086/152178· OSTI ID:4316755

Gottlieb, C A; Palmer, P; Rickard, L J; Zuckerman, B

The 1/sub 11/1/sub 10/ transition of interstellar formamide (NH/sub 2/ CHO) wa s detected at 19-cm wavelength in the galactic canter sources Sgr A and Sgr B2. Statistical equilibrium calculations, which indicate that the 1/sub 11/- 1/sub 10/ and 2/sub 12/-2/sub 11/ transitions are inverted for large r anges cf densities and temperatures, suggest an NH/sub 2/CHO projected density of ~10/sup 15/ cm/su p -2/ in SBr B2. Argumensa are presented that all of the previusly observed K-doublet transitions of formamide, methyl alcohol, formic acid, and acetaldehyde are inverted and amplify the background continuum radiation. (auth)

• Research Organization: Harvard College Observatory, Cambridge, Massachusetts
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-022055
• OSTI ID: 4316755
• Journal Information: Astrophys. J., v. 182, no. 3, pp. 699-710, Journal Name: Astrophys. J., v. 182, no. 3, pp. 699-710; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

*FORMAMIDE-- INTERSTELLAR SPACE
ABSORPTION SPECTRA
EQUILIBRIUM
MILKY WAY
N56500* --Physics (Astrophysics & Cosmology)--Galaxies
RADIO NOISE
ZONES