| Name | OT2_mgerin_6 |
| Title | Search for CH2$D+, a key reactant in interstellar chemistry |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342250592&instrument_name=HIFI&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-lj5jsjt |
| Author | gerin, m. |
| Description | We propose to perform a deep search for the CH2D+ ionwith Herschel/HIFI. This species plays a key role in interstellar chemistry, especially for deuterium fractionation at moderate temperature, but also as tracer of the symmetrical species CH3+.Because of its low dipole moment, and floppy character, its rotational transitions were not accurately known until recently (Amano 2010). Also, only two millimeter transition and onesubmillimeter transition are available from the ground, but inspectral regions where multiple emission lines from other speciesare present. Therefore, this ion escaped detection despite extensive searches bysome of the proponents for over 30 years. Three of the most intense linesof CH2D+ are accessible to Herschel/HIFI in relatively clean spectralregions. The detection of CH2D+ seems therefore to be finally withinreach, providing a key proof of the validity of state of the artchemical networks. |
| Publication | |
| Instrument | HIFI_HifiPoint_dbs |
| Temporal Coverage | 2012-09-04T17:12:53Z/2012-09-08T09:31:52Z |
| Version | SPG v14.1.0 |
| Mission Description | Herschel was launched on 14 May 2009! It is the fourth cornerstone mission in the ESA science programme. With a 3.5 m Cassegrain telescope it is the largest space telescope ever launched. It is performing photometry and spectroscopy in approximately the 55-671 µm range, bridging the gap between earlier infrared space missions and groundbased facilities. |
| Creator Contact | https://support.cosmos.esa.int/h®erschel/ |
| Date Published | 2013-03-08T09:05:06Z |
| Last Update | 2026-03-02 |
| Keywords | Herschel Space Observatory data, ESA Herschel mission dataset, far-infrared astronomy observations, submillimeter astronomy data, infrared space telescope observations, PACS photometer data, PACS spectrometer data, SPIRE photometer data, SPIRE Fourier transform spectrometer data, HIFI heterodyne spectroscopy data, far-infrared spectroscopy dataset, submillimeter spectral line observations, cold universe observations dataset, star formation infrared data, molecular cloud far-infrared observations, interstellar medium spectroscopy data, protoplanetary disk infrared observations, galaxy evolution far-infrared data, dust emission submillimeter observations, cosmic infrared background measurements, extragalactic infrared survey data, calibrated level 2 data products, FITS files astronomy, spectral cubes far-infrared, flux-calibrated maps, continuum photometry data, spectral energy distribution measurements, ESA Herschel Science Archive data |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, gerin et al., 2013, 'Search for CH2$D+, a key reactant in interstellar chemistry', SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-lj5jsjt |