| Name | OT1_ksandstr_1 |
| Title | ISM Heating and Cooling in Massive Galaxies: The Andromeda Galaxy as Fundamental Calibrator |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342236285&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-68xy79x |
| Author | sandstrom, k. |
| Description | M31, the nearest massive galaxy, affords a unique opportunity to draw up the energy balance of the star-formation (SF) process on the spatialscales (<50 pc) of individual SF regions and of the presumed SF energydeposition. For the .heating terms., UV to near-IR data from the Pan-chromatic Hubble Andromeda Treasury (PHAT) provide a direct census of all young stars in M31; for the .cooling terms., a rich set of existing multi-wavelength data (far-UV to HI) provide many of the cooling diagnostics for the gas and dust. Here we propose to obtain the crucial missing link in the overall ISM energy budget by mapping the dominant, and hence indispensable, cooling lines of the neutral medium, CII and OI.n Specifically, we propose PACS CII and OI line mapping of several selected (700pc x 700pc) regions in M 31 with ongoing SF, complemented by N II observations. These data will enable a foundational study of the energy budget and feed-back of star formation. The data will also provide a stringent calibration of the CII line as a local star-formation indicator. Finally, the data set provides the opportunity to understand the sub-grid physics that is needed both for galaxy formation simulations and for interpreting the enormous wealth of gas and dust diagnostic data in more distant galaxies. |
| Publication |
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| Instrument | PACS_PacsLineSpec_large |
| Temporal Coverage | 2012-01-04T20:52:08Z/2012-02-07T05:37:26Z |
| 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 | 2012-08-06T21:45:08Z |
| Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, sandstrom et al., 2012, 'ISM Heating and Cooling in Massive Galaxies: The Andromeda Galaxy as Fundamental Calibrator', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-68xy79x |