| Name | OT1_kcoppin_1 |
| Title | A Herschel Survey of OI63um in 1 |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342239369&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-t6fochh |
| Author | coppin, k. |
| Description | Luminous obscured galaxies likely dominate the total bolometric emission from star-formation at the early epochs of z~2-3, and are most efficiently identified through their (sub)millimetre emission and are so-called submillimetre galaxies (SMGs). The intense starbursts in SMGs are fuelled by their large observed H2 gas reservoirs, as traced by CO interferometric surveys, although the details of how their immense luminosities (L_fir>5x10^12 Lsun) and star-formation rates (~100-1000 Msun/yr) are powered are not well understood: Are SMGs just scaled up ULIRGs with star-formation occurring in a highly-obscured nuclear region (with perhaps some contribution from an AGN)? Or does the star-formation occur in a more extended, cooler component, such as in normal star-forming galaxies. One route to tackling this question is to construct a data set of the brightest fine-structure ISM emission lines (CII and OI) in a well-defined sample of SMGs, which with ancillary CO data, will allow us to study the physics of the ISM and its interplay with the heating source. Similar benchmark data sets are being compiled by several Herschel programs for local LIRGs and ULIRGs, which will act as a link to help interpret the high-redshift SMG observations. Here we propose a timely and systematic study with the PACS spectrometer of OI63um in a flux-limited sample of SMGs with secure spectroscopic redshifts between 0.7 to its southern declination and wealth of existing ancillary datasets. The combination of these Herschel data (OI) and future ALMA data (CII and CO) with state-of-the art PDR modelling will reveal new insights into the typical physical conditions of the ISM in the most active high-z star-forming population of galaxies, including the average gas temperature, density, abundance, and radiation field strength integrated over the galaxy. |
| Publication |
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| Instrument | PACS_PacsRangeSpec_point |
| Temporal Coverage | 2012-02-20T12:20:50Z/2012-02-28T13:56:22Z |
| Version | SPG v14.2.0 |
| 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 | 2012-08-28T11:39:28Z |
| Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, coppin et al., 2012, 'A Herschel Survey of [OI]63um in 1 |