2010A&A...516L...4A

Query : 2010A&A...516L...4A

2010A&A...516L...4A - Astronomy and Astrophysics, volume 516L4-4 (2010/6-2)

Submillimeter-wave spectrum of CH2D+.

AMANO T.

Abstract (from CDS):

Recently a tentative identification of CH2D+ in interstellar space has been reported. To facilitate astronomical identifications, laboratory measurements of precise rest frequencies for the rotational lines of CH2D+ should be carried out. A submillimeter-wave spectrometer is used for detection of CH2D+. The CH2D+ ion is generated in an extended negative glow discharge operated at liquid nitrogen temperature. The optimum gas mixture is found to be CH4 (∼3mTorr), CD4 (∼1mTorr), and H2 (∼2mTorr) in helium buffer. Four rotational lines have been detected in the frequency range of 280-890GHz. The measured frequencies agree very well within a MHz with the predictions given by Roesslein et al. from the infrared spectra. Two rotational lines of this ion have been tentatively identified toward Ori IRc2. The rest frequencies obtained here should facilitate identifications and analysis of astronomical spectra.

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Journal keyword(s): molecular data - methods: laboratory - ISM: molecules - submillimeter: ISM - radio lines: ISM

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [RLK73] IRc 2 IR 05 35 14.51548 -05 22 30.5943           ~ 673 1

Query : 2010A&A...516L...4A

Basic data :
[RLK73] IRc 2 -- Infra-Red Source
Other object types: otypes_help 		IR (MLLA,[HAB84],...), HII ([GSL2002]), * ([HC2000]), Rad (GMR)
ICRS coord. (ep=J2000) : 		05 35 14.51548 -05 22 30.5943 (Radio) [ ] C 2016ApJ...822...93F
FK4 coord. (ep=B1950 eq=1950) : 		05 32 47.04311 -05 24 24.0543 [ ]
Gal coord. (ep=J2000) : 		208.99313090 -19.38468949 [ ]
Fluxes (1) :
K 7.0 [~] D 1984MNRAS.206..465H
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Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 5 		Display criteria :

Identifiers (13) :
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GMR I NAME M 42 IRC 2 NAME KL IRC2 [RLK73] IRc 2
MLLA 615 NAME BN IRc 2 [GSL2002] 13
NAME Orion IRc2 NAME NGC 1976 IRC 2 [HAB84] 31
NAME Ori IRc2 NAME Orion Source I [HC2000] 759

References (673 between 1850 and 2026) (Total 673)
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MLLA 615

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