Modelling the emission of HNCO towards IRAS16293-2422 using a new set of collisional coefficients. Issue Volume 13:Issue S332(2017) (4th September 2018)

• Record Type: Journal Article
• Authors: Hernández-Gómez, A.; Sahnoun, E.; Caux, E.; Wiesenfeld, L.; Loinard, L.; Bottinelli, S.; Hammami, K.
• Editors: Cunningham, Maria; Millar, Tom; Aikawa, Yuri
• Is Part Of: Proceedings of the International Astronomical Union. Volume 13:Issue S332(2017)
• Page Start: 435
• Page End: 439
• Publication Date: 2018-09-04
• Subjects: Protostars, -- molecular emission, -- non-LTE modelling; Astronomy -- Congresses; Astronomy -- Periodicals; 520
• DOI: 10.1017/S1743921317006809
• Languages: English
• ISSNs: 1743-9213

Abstract

Abstract: Isocyanic acid (HNCO) is a simple molecule containing the four main atoms essential for life and can be considered as a prebiotic molecule. To model the HNCO emission in the IRAS16293-2422 class 0 low-mass protostar, we used a new set of HNCO collisional coefficients with ortho-H2 and para-H2, computed from a set of rotational excitation quenching rates between HNCO and H2 based on a novel potential energy surface for the rigid molecules interactions. We present here the HNCO Potential Energy Surface used to compute this new set of collisional coefficients and the result of the IRAS16293-2422 HNCO spectrum modelling using them.