eprintid: 10093778
rev_number: 18
eprint_status: archive
userid: 608
dir: disk0/10/09/37/78
datestamp: 2020-04-27 15:22:50
lastmod: 2021-12-13 03:13:01
status_changed: 2020-04-27 15:22:50
type: article
metadata_visibility: show
creators_name: Cueto, M
creators_name: Cernicharo, J
creators_name: Barlow, MJ
creators_name: Swinyard, BM
creators_name: Herrero, VJ
creators_name: Tanarro, I
creators_name: Doménech, JL
title: New accurate measurement of ³⁶ArH+ and ³⁸ArH+ ro-vibrational transitions by high resolution IR absorption spectroscopy
ispublished: pub
divisions: UCL
divisions: B04
divisions: C06
divisions: F60
keywords: ISM: molecules; methods: laboratory: molecular; molecular data; techniques: spectroscopic
note: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: The protonated argon ion, 36ArH+, was recently identified in the Crab Nebula from Herschel spectra. Given the atmospheric opacity at the frequency of its J = 1-0 and J = 2-1 rotational transitions (617.5 and 1234.6 GHz, respectively), and the current lack of appropriate space observatories after the recent end of the Herschel mission, future studies on this molecule will rely on mid-infrared observations. We report on accurate wavenumber measurements of 36ArH+ and 38ArH+ rotation-vibration transitions in the v = 1-0 band in the range 4.1-3.7 μm (2450-2715 cm–1). The wavenumbers of the R(0) transitions of the v = 1-0 band are 2612.50135 ± 0.00033 and 2610.70177 ± 0.00042 cm–1 (±3σ) for 36ArH+ and 38ArH+, respectively. The calculated opacity for a gas thermalized at a temperature of 100 K and with a linewidth of 1 km s–1 of the R(0) line is 1.6 × 10–15 × N(36ArH+). For column densities of 36ArH+ larger than 1 × 1013 cm–2, significant absorption by the R(0) line can be expected against bright mid-IR sources.
date: 2014-03-01
date_type: published
publisher: IOP PUBLISHING LTD
official_url: https://doi.org/10.1088/2041-8205/783/1/L5
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 925732
doi: 10.1088/2041-8205/783/1/L5
lyricists_name: Barlow, Michael
lyricists_name: Swinyard, Bruce
lyricists_id: MJBAR75
lyricists_id: BSWIN93
actors_name: Allington-Smith, Dominic
actors_id: DAALL44
actors_role: owner
full_text_status: public
publication: The Astrophysical Journal Letters
volume: 783
number: 1
article_number: L5
pages: 5
citation:        Cueto, M;    Cernicharo, J;    Barlow, MJ;    Swinyard, BM;    Herrero, VJ;    Tanarro, I;    Doménech, JL;      (2014)    New accurate measurement of ³⁶ArH+ and ³⁸ArH+ ro-vibrational transitions by high resolution IR absorption spectroscopy.                   The Astrophysical Journal Letters , 783  (1)    , Article L5.  10.1088/2041-8205/783/1/L5 <https://doi.org/10.1088/2041-8205%2F783%2F1%2FL5>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10093778/10/Barlow_Cueto_2014_ApJL_783_L5.pdf