| Name | GT2_hbeuther_3 |
| Title | The Carbon Budget and Formation Signatures of Molecular Clouds |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342250966&instrument_name=HIFI&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-50w73ux |
| Author | European Space Agency |
| Description | The interstellar medium (ISM) is mainly comprised of ionized, neutral atomic and molecular gas. One of the most important constituents of these phases is carbon in its ionized/neutral/molecular form (C^+, C^0 and CO). However, a coherent analysis of the different phases at adequate spatial resolution (Jeans length virgul0.2pc) is lacking. We therefore want to re-evaluate the ISM carbon budget via observing primarily C^+ at 1.9THz, C^0 (at 492GHz), and CO(2-1) with Herschel, APEX and the IRAM 30m at high spatial resolution (11.-13.) for several infrared dark clouds (IRDCs). This proposal is a guaranteed time pilot study for the line of ionized carbon [CII] toward one IRDC that hosts several embedded protostars. We will follow that up in the future with an open time Herschel proposal as well as SOFIA observations. With the combined data of the different carbon phases we can address: (a) How do the relative abundances change with evolutionary stage? (b) Are the different phases mainly excited by internal or external radiation sources? (c) How important are the phase changes for the carbon cooling budget of the ISM? (d) Can we identify cloud formation signatures (e.g., turbulent flows)? |
| Publication | Carbon in different phases ([CII], [CI], and CO) in infrared dark clouds: Cloud formation signatures and carbon gas fractions . Beuther H. et al. . Astronomy & Astrophysics, Volume 571, id.A53, 15 pp. . 571 . 10.1051\/0004-6361\/201424757 . 2014A&A...571A..53B , |
| Instrument | HIFI_HifiMapping_load-raster |
| Temporal Coverage | 2012-09-13T22:44:24Z/2012-09-14T03:35:42Z |
| 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 | 2013-03-14T01:17:09Z |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, 2013, The Carbon Budget And Formation Signatures Of Molecular Clouds, SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-50w73ux |