Query : 2008A&A...492..875B

2008A&A...492..875B - Astronomy and Astrophysics, volume 492, 875-881 (2008/12-4)

Accurate rest frequencies for the submillimetre-wave lines of C3O in ground and vibrationally excited states below 400/cm.


Abstract (from CDS):

The submillimetre-wave spectrum of C3O (X1Σ+) has been investigated in the laboratory using a source-modulation microwave spectrometer equipped with a gas-phase flow pyrolysis system for the production of unstable chemical species. C3O was produced by thermal decomposition of fumaryl chloride at 900 °C. Thirty-seven new rotational transitions were observed in the frequency range 307-740GHz for the ground vibrational state, reaching a J quantum number as high as 76. Additionally, new millimetre-wave and submillimetre-wave lines were recorded for the bending fundamental v5=1, and for its overtones v5=2 and v5=3 whose rotational spectra have been identified for the first time. The new laboratory measurements provide much improved rest frequencies in the submillimetre spectral region for the ground state spectra of C3O, and for the first levels of its low-energy v5 vibrational ladder, useful for the radioastronomical identification of their rotational lines in the ISM.

Abstract Copyright:

Journal keyword(s): molecular data - methods: laboratory - techniques: spectroscopic - radio lines: ISM

VizieR on-line data: <Available at CDS (J/A+A/492/875): table5.dat table6.dat table7.dat table8.dat>

Simbad objects: 2

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Number of rows : 2
N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
1 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1580 0
2 IRC +10216 C* 09 47 57.40632 +13 16 43.5648           C9,5e 2282 0

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