Bizzocchi, Luca ORCID: 0000-0002-9953-8593, Tamassia, Filippo, Laas, Jacob ORCID: 0000-0001-6876-6940, Giuliano, Barbara M., Esposti, Claudio Degli, Dore, Luca ORCID: 0000-0002-1009-7286, Melosso, Mattia ORCID: 0000-0002-6492-5921, Cane, Elisabetta, Charmet, Andrea Pietropolli, Mueller, Holger S. P., Spahn, Holger, Belloche, Arnaud, Caselli, Paola, Menten, Karl M. and Garrod, Robin T. (2017). Rotational and High-resolution Infrared Spectrum of HC3N: Global Ro-vibrational Analysis and Improved Line Catalog or Astrophysical Observations. Astrophys. J. Suppl. Ser., 233 (1). BRISTOL: IOP PUBLISHING LTD. ISSN 1538-4365

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Abstract

HC3N is a ubiquitous molecule in interstellar environments, from external galaxies to Galactic interstellar clouds, star-forming regions, and planetary atmospheres. Observations of its rotational and vibrational transitions provide important information on the physical and chemical structures of the above environments. We present the most complete global analysis of the spectroscopic data of HC3N. We recorded the high-resolution infrared spectrum from. 450 to. 1350 cm(-1), a region dominated by the intense n5 and n6 fundamental bands, located at. 660 and. 500 cm(-1), respectively, and their associated hot bands. Pure rotational transitions in the ground and vibrationally excited states were recorded in the millimeter and submillimeter regions in order to extend the frequency range so far considered in previous investigations. All of the transitions from the literature and from this work involving energy levels lower than 1000 cm(-1) were fitted together to an effective Hamiltonian. Because of the presence of various anharmonic resonances, the Hamiltonian includes a number of interaction constants, in addition to the conventional rotational and vibrational l-type resonance terms. The data set contains about. 3400 ro-vibrational lines of 13. bands and some. 1500 pure rotational lines belonging to. 12 vibrational states. More than 120 spectroscopic constants were determined directly from the fit, without any assumption deduced from theoretical calculations or comparisons with similar molecules. An extensive list of highly accurate rest frequencies was produced to assist astronomical searches and data interpretation. These improved data enabled a refined analysis of the ALMA observations toward Sgr B2(N2).

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bizzocchi, LucaUNSPECIFIEDorcid.org/0000-0002-9953-8593UNSPECIFIED
Tamassia, FilippoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Laas, JacobUNSPECIFIEDorcid.org/0000-0001-6876-6940UNSPECIFIED
Giuliano, Barbara M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Esposti, Claudio DegliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dore, LucaUNSPECIFIEDorcid.org/0000-0002-1009-7286UNSPECIFIED
Melosso, MattiaUNSPECIFIEDorcid.org/0000-0002-6492-5921UNSPECIFIED
Cane, ElisabettaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Charmet, Andrea PietropolliUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mueller, Holger S. P.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Spahn, HolgerUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Belloche, ArnaudUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Caselli, PaolaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Menten, Karl M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Garrod, Robin T.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-212115
DOI: 10.3847/1538-4365/aa9571
Journal or Publication Title: Astrophys. J. Suppl. Ser.
Volume: 233
Number: 1
Date: 2017
Publisher: IOP PUBLISHING LTD
Place of Publication: BRISTOL
ISSN: 1538-4365
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
DIODE-LASER SPECTRUM; MICROWAVE-SPECTRUM; FUNDAMENTAL BANDS; FOURIER-TRANSFORM; EXCITED-STATES; WAVE SPECTRA; CYANOACETYLENE; INTENSITIES; MILLIMETER; HCCCNMultiple languages
Astronomy & AstrophysicsMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/21211

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