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Sobolev LVG Analysis of Prebiotic Molecule Formamide (NH2CHO) Found in the ISM

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Using known values of rotational and centrifugal distortion constants in conjunction with electric dipole moment of NH2CHO, we have calculated energies of rotational levels in the ground vibrational state, and the probabilities for radiative transitions between the levels. The radiative transition probabilities in conjunction with the scaled values of collisional rate coefficients are used in the Sobolev LVG analysis of NH2CHO. There are some strong lines. For ortho-NH2CHO, we have found one transition 110-111 showing anomalous absorption and five transitions 615-514, 717-616, 716-615, 818-717, 817-716 showing emission feature. For para-NH2CHO, six emission transitions 505-404, 606-505, 707-606, 808-707, 909-808, 100.10-909 are found. Out of these 12 transitions, three transitions, 110-111, 505-404, and 808-707, are already found in the ISM. Other relatively weaker lines are also found in the ISM. In addition to the observed lines, 9 transitions may play important role in the identification of NH2CHO in a cosmic object.

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Authors and Affiliations

  1. Amity Center for Astronomy and Astrophysics, Amity Institute of Applied Sciences, Amity University, Noida, U.P., 201313, India

    M. K. Sharma, V. D. Mampatta & S. Chandra

  2. School of Studies in Physics, Jiwaji University, Gwalior, M.P., 474011, India

    M. Sharma

Authors
  1. M. K. Sharma
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  2. V. D. Mampatta
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  3. M. Sharma
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  4. S. Chandra
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Correspondence to M. Sharma.

Additional information

Published in Astrofizika, Vol. 64, No. 1, pp. 95-105 (February, 2021).

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Sharma, M.K., Mampatta, V.D., Sharma, M. et al. Sobolev LVG Analysis of Prebiotic Molecule Formamide (NH2CHO) Found in the ISM. Astrophysics 64, 81–90 (2021). https://doi.org/10.1007/s10511-021-09670-7

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  • DOI: https://doi.org/10.1007/s10511-021-09670-7

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