| Name | OT2_tcsenger_1 |
| Title | A diagnostic study of shocks of converging flows seen within the DR21(OH) clump |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342245872&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-fu4k3qu |
| Author | csengeri, t. |
| Description | DR21(OH) is the most massive protocluster within 3 kpc and therefore serves as a perfect laboratory to study the onset of high-mass star-formation. Recent high-angular resolution observations identified flows of cold dense gas from parsec to sub-parsec scales associated with the sites of high-mass protostars similarly as it is predicted by the dynamical, fast star-formation scenario. It is however observationally challenging to find direct evidence and proof for the converging flow model. Our group has identified the most promising potential sites in the Cygnus-X complex where the shocks associated with these converging flows could be found. Here we aim for a detailed study of typical shock tracers (i.e.OI, OH and H2O lines using PACS and SPIRE spectroscopy) to reveal the signatures of the shocks as well as to study the CO ladder to constrain the excitation conditions at these sites. We also target a water line with HIFI to obtain velocity resolved spectra of the proposed shocks. This will provide a comprehensive view on these shocks and test the converging flow scenario. Herschel is the only opportunity to extensively study these molecular tracers and could provide the first direct evidence for dynamical star-formation models. |
| Publication |
|
| Instrument | SPIRE_SpireSpectrometer_, HIFI_HifiPoint_dbs, PACS_PacsRangeSpec_large |
| Temporal Coverage | 2012-05-17T18:18:46Z/2012-12-23T09:04:18Z |
| Version | SPG v14.2.2 |
| 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 | 2013-06-23T08:27:25Z |
| 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, csengeri et al., 2013, 'A diagnostic study of shocks of converging flows seen within the DR21(OH) clump', SPG v14.2.2, European Space Agency, https://doi.org/10.5270/esa-fu4k3qu |