Name | OT1_wjaffe_1 |
Title | Keeping the cool gas in galaxy clusters warm. |
URL | http://archives.esac.esa.int/hsa/whsa-tap-server/data?retrieval_type=OBSERVATION&observation_id=1342249055&instrument_name=SPIRE&product_level=LEVEL0&compress=true |
DOI | https://doi.org/10.5270/esa-kyz0qd3 |
Author | jaffe, w. |
Description | We propose SPIRE FTS spectra to determine the source of heating of the cool/warm (100-300 K) gas in the Brightest Cluster Galaxy NGC-1275, the brightest of all cluster cool-core galaxies. The heating mechanism in BCGs is unknown and crucial to understandinganalogous negative feedback processes in star-forming galaxiesat high redshift. Our current mm-CO, PACS, nearIR and optical dataon this cluster indicate that the SPIRE measurements will detectmany CO lines and possibly H2O+ and OH+ lines that willdetermine the temperature, and density of the most importantcomponent of this warm gas. The ratios of the CO lines, andthe presence or absence of the ionized lines, and thedependence of these lines with distance from the central AGN shouldallow us to choose between the several possible heatingand excitation mechanisms: soft X-rays, cosmic ray ionization,and C- and J- shocks from AGN induced turbulence. |
Publication |
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Instrument | SPIRE_SpireSpectrometer_ |
Temporal Coverage | 2012-08-04T05:14:21Z/2012-09-03T13:44:28Z |
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 | 2013-03-03T09:37:16Z |
Keywords | Herschel, HSC, submillimetre, far-infrared, HIFI, PACS, SPIRE |
Publisher And Registrant | European Space Agency |
Credit Guidelines | European Space Agency, jaffe et al., 2013, 'Keeping the cool gas in galaxy clusters warm.', SPG v14.1.0, European Space Agency, https://doi.org/10.5270/esa-kyz0qd3 |