MILLIMETER WAVE SPECTRUM AND ASTRONOMICAL SEARCH FOR VINYL FORMATE

被引：7
作者：
Alonso, E. R. [1 ]
Kolesnikova, L. [1 ]
Tercero, B. [2 ]
Cabezas, C. [1 ]
Alonso, J. L. [1 ]
Cernicharo, J. [2 ]
Guillemin, J. -C. [3 ]
机构：
[1] Univ Valladolid, Unidad Asociada CSIC, GEM, Lab Espectroscopia & Bioespectroscopia, Edificio Quifima,Parque Cient UVa, E-47011 Valladolid, Spain
[2] ICMM CSIC, Grp Astrofis Mol, C Sor Juana Ines Cruz 3, E-28049 Canto Blanco, Spain
[3] Ecole Natl Super Chim Rennes, CNRS, Inst Sci Chim Rennes, UMR 6226, 11 Allee Beaulieu,CS 50837, F-35708 Rennes 7, France
来源：
ASTROPHYSICAL JOURNAL | 2016年 / 832卷 / 01期
基金：
欧洲研究理事会;
关键词：
catalogs; ISM: molecules; molecular data; techniques: spectroscopic; VIBRATIONALLY EXCITED-STATES; GAS-PHASE CHEMISTRY; 1ST ISM DETECTION; METHYL FORMATE; ORION-KL; ASTROPHYSICAL DETECTION; ROTATIONAL SPECTRUM; GALACTIC-CENTER; LABORATORY CHARACTERIZATION; C-13-METHYL FORMATE;
D O I：
10.3847/0004-637X/832/1/42
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Previous detections of methyl and ethyl formate make other small substituted formates potential candidates for observation in the interstellar medium. Among them, vinyl formate is one of the simplest unsaturated carboxylic ester. The aim of this work is to provide direct experimental frequencies of the ground vibrational state of vinyl formate in a large spectral range for astrophysical use. The room-temperature rotational spectrum of vinyl formate has been measured from 80 to 360 GHz and analyzed in terms of Watson's semirigid rotor Hamiltonian. Two thousand six hundred transitions within J = 3-88 and K-a = 0-28 were assigned to the most stable conformer of vinyl formate and a new set of spectroscopic constants was accurately determined. Spectral features of vinyl formate were then searched for in Orion KL, Sgr B2( N), B1-b, and TMC-1 molecular clouds. Upper limits to the column density of vinyl formate are provided.
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页数：5
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