2019A&A...626A..34C


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST04:22:40

2019A&A...626A..34C - Astronomy and Astrophysics, volume 626A, 34-34 (2019/6-1)

Broad-band high-resolution rotational spectroscopy for laboratory astrophysics.

CERNICHARO J., GALLEGO J.D., LOPEZ-PEREZ J.A., TERCERO F., TANARRO I., BELTRAN F., DE VICENTE P., LAUWAET K., ALEMAN B., MORENO E., HERRERO V.J., DOMENECH J.L., RAMIREZ S.I., BERMUDEZ C., PELAEZ R.J., PATINO-ESTEBAN M., LOPEZ-FERNANDEZ I., GARCIA-ALVARO S., GARCIA-CARRENO P., CABEZAS C., MALO I., AMILS R., SOBRADO J., DIEZ-GONZALEZ C., HERNANDEZ J.M., TERCERO B., SANTORO G., MARTINEZ L., CASTELLANOS M., VAQUERO JIMENEZ B., PARDO J.R., BARBAS L., LOPEZ-FERNANDEZ J.A., AJA B., LEUTHER A. and MARTIN-GAGO J.A.

Abstract (from CDS):

We present a new experimental set-up devoted to the study of gas phase molecules and processes using broad-band high spectral resolution rotational spectroscopy. A reactor chamber is equipped with radio receivers similar to those used by radio astronomers to search for molecular emission in space. The whole range of the Q (31.5-50GHz) and W bands (72-116.5GHz) is available for rotational spectroscopy observations. The receivers are equipped with 16x2.5GHz fast Fourier transform spectrometers with a spectral resolution of 38.14kHz allowing the simultaneous observation of the complete Q band and one-third of the W band. The whole W band can be observed in three settings in which the Q band is always observed. Species such as CH3CN, OCS, and SO2 are detected, together with many of their isotopologues and vibrationally excited states, in very short observing times. The system permits automatic overnight observations, and integration times as long as 2.4 x 105 s have been reached. The chamber is equipped with a radiofrequency source to produce cold plasmas, and with four ultraviolet lamps to study photochemical processes. Plasmas of CH4, N2, CH3CN, NH3, O2, and H2, among other species, have been generated and the molecular products easily identified by the rotational spectrum, and via mass spectrometry and optical spectroscopy. Finally, the rotational spectrum of the lowest energy conformer of CH3CH2NHCHO (N-ethylformamide), a molecule previously characterized in microwave rotational spectroscopy, has been measured up to 116.5GHz, allowing the accurate determination of its rotational and distortion constants and its search in space.

Abstract Copyright: © ESO 2019

Journal keyword(s): molecular data - molecular processes - line: identification - plasmas - methods: laboratory: molecular

VizieR on-line data: <Available at CDS (J/A+A/626/A34): tablec1.dat tablec2.dat>

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 [HKM99] B1-b cor 03 33 20.32 +31 07 21.5           ~ 158 0
2 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1359 0
3 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2001 1
4 NAME Sgr B2 MoC 17 47 20.4 -28 23 07           ~ 1909 1

    Equat.    Gal    SGal    Ecl

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2020.07.08-04:22:40

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