| Name | OT2_pguillar_7 |
| Title | Energetics of AGN feedback: CII line cooling in radio-galaxies with jet-driven outflows |
| URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342247534&instrument_name=PACS&product_level=LEVEL0&compress=true |
| DOI | https://doi.org/10.5270/esa-wmgl705 |
| Author | guillard, p. |
| Description | Observations of ionized and massive neutral gas (HI) outflows in radio-galaxies (RGs) suggest that radio-jet feedback has a galaxy-scale impact on the host interstellar medium (ISM). Our recent results from Spitzer IRS spectroscopy of a small sample of 8 HI-outflow RGs show that all of them have bright H2 line emission that cannot be accounted for by UV or X-ray heating, and that the H2 gas is extremely turbulent, with H2 S(1) line FWHM = 450-720 km/s. We suspect that the radio-jet is injecting large amount of turbulent kinetic energy into the ISM, but little is know about the role of the turbulence in forming cold neutral gas from warm gas, and in regulating star formation. Our calculations and shock modeling predict that in turbulence-dominated gas, this line could be brighter than the H2 S(1) line. We propose PACS CII spectroscopy to test this, and probe an important missing piece of the ISM line cooling. These sources span a large range of IR luminosities and jet kinetic power, and provide ..clean. environments where jet-induced shocks and turbulence seem to govern the physical state of the gas. This will uniquely complement our accepted (OT1, P1, not scheduled yet) PACS OI and SPIRE spectroscopy on these sources, allowing us to estimate the relative contributions of the shock vs. photo-ionization. Such a detailed understanding of the energetics of radio-jet feedback is crucial to interpret high-redshift observations and input numerical models of galaxy evolution. |
| Publication |
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| Instrument | PACS_PacsRangeSpec_point |
| Temporal Coverage | 2012-06-29T23:04:54Z/2012-11-01T20:37:23Z |
| 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 | 2013-05-01T16:32:08Z |
| Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, guillard et al., 2013, 'Energetics of AGN feedback: SQUARE_BRACKET_OPENCIISQUARE_BRACKET_CLOSE line cooling in radio-galaxies with jet-driven outflows', SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-wmgl705 |