Cyanamide (NH2CN) in Interstellar Medium: Potential Spectral Lines

Cyanamide (NH 2 CN) has pyramidal equilibrium structure with two substates, denoted by 0 + and 0 – . For each state of NH 2 CN, knowing rotational and centrifugal distortion constants in conjunction with electric dipole moment, energies for rotational levels and the probabilities for radiative trans...

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Bibliographic Details
Published in:Astrophysics 2021-02, Vol.64 (1), p.71-80
Main Author: Sharma, M. K.
Format: Article
Language:English
Subjects:
Astronomy
Astrophysics
Astrophysics and Astroparticles
Astrophysics and Cosmology
Atomic properties
Composition
Cyanamide
Dipole moments
Electric dipoles
High temperature
Interstellar matter
Interstellar medium
Line spectra
Low temperature
Observations and Techniques
Physics
Physics and Astronomy
Rotational states
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Structure
Transition probabilities
Velocity gradient
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Summary:Cyanamide (NH 2 CN) has pyramidal equilibrium structure with two substates, denoted by 0 + and 0 – . For each state of NH 2 CN, knowing rotational and centrifugal distortion constants in conjunction with electric dipole moment, energies for rotational levels and the probabilities for radiative transitions between the levels are calculated. The radiative transition probabilities in conjunction with scaled values for rate coefficients for collisional transitions between the levels are used in the Large Velocity Gradient analysis for each substate. For each substate, we have found anomalous absorption in three doublets at high temperature and weak MASER action at low temperature. We have also found emission feature in nine transitions in each substate. These transitions, along with the observed ones, may play important role for identification of NH 2 CN in a cosmic object.
ISSN:0571-7256
1573-8191
DOI:10.1007/s10511-021-09669-0