| Name | OT2_pcaselli_7 |
| Title | Constraining the chemistry of water in pre-stellar cores |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342250437&instrument_name=HIFI&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-hfjor35 |
| Author | caselli, p. |
| Description | With this proposal, we aim to measure the water vapor abundance in two nearby dark clouds with different physical and chemical characteristics, following the successful recent Herschel results of Caselli et al. (2010; 2011, in prep.) toward the pre-stellar core L1544. These measurements are crucial to finally put constraints on poorly known parameters which regulate the chemistry of Oxygen: photodesorption and freeze-out/desorption rates. Such parameters are at the base of astrochemistry and their large uncertainties affect our interpretation of observations toward molecular clouds and star forming regions. Herschel OT2 is a unique chance to observe water vapor in regions not affected by protostellar feedback and with simple structure, two necessary conditions to obtain unambiguous results.Together with the existing Herschel data on L1544, the proposed observations will provide three detailed (legacy) studies aimed at exploring fundamental processes crucial for understanding Oxygen chemistry and for the overall interpretation of interstellar medium observations (including Herschel data). |
| Publication | |
| Instrument | HIFI_HifiPoint_dbs |
| Temporal Coverage | 2012-08-29T19:52:11Z/2012-09-21T12:47:34Z |
| 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 | 2013-03-20T21:18:27Z |
| 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, caselli et al., 2013, 'Constraining the chemistry of water in pre-stellar cores', SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-hfjor35 |