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Possible detection of interstellar benzonitrile
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Possible detection of interstellar benzonitrile
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The simplest cyanobenzene, benzonitrile (c-C6H5CN) have been possibly detected toward the cyanopolyyne peak in TMC-1. We used the results of the 8.8 -- 50 GHz spectral survey of TMC-1 by Kaifu et al. (2004) and stacked the lines of benzonitrile that fall within the range of this survey. The obtained spectrum strongly suggests the presence of this molecule. Benzonitrile is a derivative of the simplest aromatic hydrocarbon benzene. Aromatic hydrocarbons are thought to be ubiquitous in the ISM, but it is difficult to study them in molecular cloud interiors, since they are nonpolar and have no allowed transitions at radio frequencies. Therefore it is important to search for their derivatives, such as cyanobenzenes. Thus, the detection of benzonitrile might be important for astrochemistry, but additional sensitive observations are necessary in order to confirm it.
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Cited by 1 Pith paper
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TMC-1: probing the onset of chemical complexity in space
Recent radio surveys of TMC-1 have detected over twice as many molecules as before, but state-of-the-art chemical models still fail to explain the origin of polycyclic aromatic hydrocarbons.
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