2016A&A...593A..56S


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.27CEST18:15:20

2016A&A...593A..56S - Astronomy and Astrophysics, volume 593A, 56-56 (2016/9-1)

Laboratory rotational ground state transitions of NH3D+ and CF+.

STOFFELS A., KLUGE L., SCHLEMMER S. and BRUNKEN S.

Abstract (from CDS):

Aims. This paper reports accurate laboratory frequencies of the rotational ground state transitions of two astronomically relevant molecular ions, NH3D+ and CF+.
Methods. Spectra in the millimetre-wave band were recorded by the method of rotational state-selective attachment of He atoms to the molecular ions stored and cooled in a cryogenic ion trap held at 4K. The lowest rotational transition in the A state (ortho state) of NH3D+ (JK=10-00), and the two hyperfine components of the ground state transition of CF+ (J=1-0) were measured with a relative precision better than 10–7.
Results. For both target ions, the experimental transition frequencies agree with recent observations of the same lines in different astronomical environments. In the case of NH3D+ the high-accuracy laboratory measurements lend support to its tentative identification in the interstellar medium. For CF+ the experimentally determined hyperfine splitting confirms previous quantum-chemical calculations and the intrinsic spectroscopic nature of a double-peaked line profile observed in the J=1-0 transition towards the Horsehead photon-dominated region (PDR).

Abstract Copyright: © ESO, 2016

Journal keyword(s): astrochemistry - ISM: molecules - methods: laboratory: molecular - line: identification - molecular data

Status at CDS:  

Simbad objects: 5

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Number of rows : 5

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           ~ 154 0
2 [HRF2005] 3 PoC 03 33 21.3 +31 07 27           ~ 59 0
3 [KJD2006] SMM J033335+31075 PoC 03 33 21.3 +31 07 28           ~ 72 0
4 [RLK73] IRc 2 IR 05 35 14.51548 -05 22 30.5943           ~ 569 1
5 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 474 0

    Equat.    Gal    SGal    Ecl

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2020.05.27-18:15:20

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