NCCN in TMC-1 and IRC+10216

S. Petrie; T. J. Millar; A. J. Markwick

doi:10.1046/j.1365-8711.2003.06436.x

NCCN in TMC-1 and IRC+10216

S. Petrie^*, T. J. Millar, A. J. Markwick

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

We employ quantum chemical calculations using the CBS-RAD ('Complete Basis Set- Radicals') technique on the C₂N₂H potential energy surface to show that the reaction of HNC with CN is a viable and plausible route to NCCN in cold astrophysical environments. We use detailed chemical kinetic models to predict the abundance of NCCN in TMC-1 and IRC+10216. Radio-astronomical detection of NCCN is precluded by its lack of a dipole moment. We discuss other prospects for its observation in interstellar and circumstellar environments, by space-borne infrared spectroscopy, indirectly by detection of the NCCNH⁺ ion, or inferentially by detection of its higher-energy, polar isomer CNCN.

Original language	English
Pages (from-to)	609-616
Number of pages	8
Journal	Monthly Notices of the Royal Astronomical Society
Volume	341
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-8711.2003.06436.x
Publication status	Published - 11 May 2003

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10.1046/j.1365-8711.2003.06436.x

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title = "NCCN in TMC-1 and IRC+10216",

abstract = "We employ quantum chemical calculations using the CBS-RAD ('Complete Basis Set- Radicals') technique on the C2N2H potential energy surface to show that the reaction of HNC with CN is a viable and plausible route to NCCN in cold astrophysical environments. We use detailed chemical kinetic models to predict the abundance of NCCN in TMC-1 and IRC+10216. Radio-astronomical detection of NCCN is precluded by its lack of a dipole moment. We discuss other prospects for its observation in interstellar and circumstellar environments, by space-borne infrared spectroscopy, indirectly by detection of the NCCNH+ ion, or inferentially by detection of its higher-energy, polar isomer CNCN.",

keywords = "Circumstellar matter, ISM: Individual: TMC-1, ISM: Molecules, Molecular data, Molecular processes, Stars: Individual: IRC+10216",

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T1 - NCCN in TMC-1 and IRC+10216

AU - Petrie, S.

AU - Millar, T. J.

AU - Markwick, A. J.

PY - 2003/5/11

Y1 - 2003/5/11

N2 - We employ quantum chemical calculations using the CBS-RAD ('Complete Basis Set- Radicals') technique on the C2N2H potential energy surface to show that the reaction of HNC with CN is a viable and plausible route to NCCN in cold astrophysical environments. We use detailed chemical kinetic models to predict the abundance of NCCN in TMC-1 and IRC+10216. Radio-astronomical detection of NCCN is precluded by its lack of a dipole moment. We discuss other prospects for its observation in interstellar and circumstellar environments, by space-borne infrared spectroscopy, indirectly by detection of the NCCNH+ ion, or inferentially by detection of its higher-energy, polar isomer CNCN.

AB - We employ quantum chemical calculations using the CBS-RAD ('Complete Basis Set- Radicals') technique on the C2N2H potential energy surface to show that the reaction of HNC with CN is a viable and plausible route to NCCN in cold astrophysical environments. We use detailed chemical kinetic models to predict the abundance of NCCN in TMC-1 and IRC+10216. Radio-astronomical detection of NCCN is precluded by its lack of a dipole moment. We discuss other prospects for its observation in interstellar and circumstellar environments, by space-borne infrared spectroscopy, indirectly by detection of the NCCNH+ ion, or inferentially by detection of its higher-energy, polar isomer CNCN.

KW - Circumstellar matter

KW - ISM: Individual: TMC-1

KW - ISM: Molecules

KW - Molecular data

KW - Molecular processes

KW - Stars: Individual: IRC+10216

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U2 - 10.1046/j.1365-8711.2003.06436.x

DO - 10.1046/j.1365-8711.2003.06436.x

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VL - 341

SP - 609

EP - 616

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

NCCN in TMC-1 and IRC+10216

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