DETECTION OF E-CYANOMETHANIMINE TOWARD SAGITTARIUS B2(N) IN THE GREEN BANK TELESCOPE PRIMOS SURVEY

@article{Zaleski2013DETECTIONOE,
  title={DETECTION OF E-CYANOMETHANIMINE TOWARD SAGITTARIUS B2(N) IN THE GREEN BANK TELESCOPE PRIMOS SURVEY},
  author={Daniel P Zaleski and Nathan A. Seifert and Amanda L. Steber and Matt T. Muckle and Ryan A. Loomis and Joanna F. Corby and Oscar E. Mart{\'i}nez and Kyle N. Crabtree and Phil R. Jewell and Jan M. Hollis and Francis J. Lovas and David Vasquez and Jolie Nyiramahirwe and Nicole Sciortino and Kennedy Johnson and Michael C. McCarthy and Anthony J. Remijan and Brooks H. Pate},
  journal={The Astrophysical Journal Letters},
  year={2013},
  volume={765}
}
The detection of E-cyanomethanimine (E-HNCHCN) toward Sagittarius B2(N) is made by comparing the publicly available Green Bank Telescope (GBT) PRIMOS survey spectra to laboratory rotational spectra from a reaction product screening experiment. The experiment uses broadband molecular rotational spectroscopy to monitor the reaction products produced in an electric discharge source using a gas mixture of NH3 and CH3CN. Several transition frequency coincidences between the reaction product… 
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82 Citations

Chemical models of interstellar cyanomethanimine isomers

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Laboratory measurements and astronomical search for cyanomethanimine.

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Isomers in Interstellar Environments. I. The Case of Z- and E-cyanomethanimine

In this work, we present the results of our investigation into the chemistry of Z- and E-cyanomethanimine (HNCHCN), both of which are possible precursors to the nucleobase adenine. Ab initio quantum…
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References

SHOWING 1-10 OF 37 REFERENCES

THE DETECTION OF INTERSTELLAR ETHANIMINE (CH3CHNH) FROM OBSERVATIONS TAKEN DURING THE GBT PRIMOS SURVEY

We have performed reaction product screening measurements using broadband rotational spectroscopy to identify rotational transition matches between laboratory spectra and the Green Bank Telescope…

LABORATORY AND TENTATIVE INTERSTELLAR DETECTION OF TRANS-METHYL FORMATE USING THE PUBLICLY AVAILABLE GREEN BANK TELESCOPE PRIMOS SURVEY

The rotational spectrum of the higher-energy trans-conformational isomer of methyl formate has been assigned for the first time using several pulsed-jet Fourier transform microwave spectrometers in…

Increased complexity in interstellar chemistry: detection and chemical modeling of ethyl formate and n-propyl cyanide in Sagittarius B2(N)

Context. In recent years, organic molecules of increasing complexity have been found toward the prolific Galactic center source Sagittarius B2. Aims. We wish to explore the degree of complexity that…

Cyclopropenone (c-H2C3O): A New Interstellar Ring Molecule

The three-carbon keto ring cyclopropenone (c-H2C 3O) has been detected largely in absorption with the 100 m Green Bank Telescope (GBT) toward the star-forming region Sagittarius B2(N) by means of a…

INTERSTELLAR CARBODIIMIDE (HNCNH): A NEW ASTRONOMICAL DETECTION FROM THE GBT PRIMOS SURVEY VIA MASER EMISSION FEATURES

In this work, we identify carbodiimide (HNCNH), which is an isomer of the well-known interstellar species cyanamide (NH2CN), in weak maser emission, using data from the Green Bank Telescope PRIMOS…

Detection of Interstellar Cyanoformaldehyde (CNCHO)

Cyanoformaldehyde (CNCHO) has been detected toward the star-forming region Sagittarius B2(N) with the 100 m Green Bank Telescope (GBT) by means of four P-branch rotational transitions in emission,…

Interstellar Isomers: The Importance of Bonding Energy Differences

We present strong detections of methyl cyanide (CH3CN), vinyl cyanide (CH2CHCN), ethyl cyanide (CH3CH2CN), and cyanodiacetylene (HC4CN) molecules with the Green Bank Telescope (GBT) toward the Sgr…

An Investigation of Prebiotic Purine Synthesis from the Hydrolysis of HCN Polymers

The yields from an NH4CN polymerization as a function of hydrolysis time are measured, and it is found that shorter hydrolytic periods give higher yields of adenine, suggesting that the polymer may have been as important a prebiotic source of purines as the usually analyzed supernatant.

Microwave Spectra of 11 Polyyne Carbon Chains

A summary is given of the laboratory study of the rotational spectra of 11 recently detected carbon chain molecules. Classified according to their various end groups, these are the cyanopolyynes…

Erratum: Detection of amino acetonitrile in Sgr B2(N)

Aims. A small error was recently found in the program used to compute the integrated intensities in the article Belloche et al. (2008, A&A, 482, 179). Methods. We provide new versions of Fig. 2 and…