A dataset provided by the European Space Agency

Name OT1_pappleto_1
Title Charting the Cooling Pathways in High-Speed Extragalactic Shocks
URL

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DOI 10.5270/esa-ljevttj
Author appleton, p.
Description Following in the footsteps of ISO, recent observations with Spitzer have revealed a population of galaxy systems which emit a huge amount of luminosity in their pure rotational mid-IR molecular hydrogen lines, in some cases reaching 10-30 percent of the bolometric luminosity. These large line-luminosities are believed to be powered by galactic-scale shocks, which efficiently transfer kinetic energy to smaller dense clouds in the turbulent post-shock medium. However, nothing at all is known about the other important cooling channels for the shocked gas, such as [OI], H2O, OH, and CO, some of which can rival H2 as a coolant. We propose deep PACS and SPIRE spectroscopy of the Giant Shock in Stephan.s Quintet and the Taffy Galaxy bridge to quantify the most important cooling channels and determine the physical state of the gas being shocked. The results have implications for understanding the importance of molecular cooling at higher redshift where turbulence and shock-heating may play a role in galaxy formation.
Publication Herschel Spectroscopy of the Taffy Galaxies (UGC 12914-12915 = VV 254): Enhanced [C II] Emission in the Collisionally Formed Bridge . Peterson B. W. et al. . The Astrophysical Journal, Volume 855, Issue 2, article id. 141, 13 pp. (2018). . 855 . 10.3847\/1538-4357\/aaac2c . 2018ApJ...855..141P ,
Instrument SPIRE_SpireSpectrometer_, PACS_PacsRangeSpec_point, PACS_PacsRangeSpec_large
Temporal Coverage 2011-01-20T11:51:54Z/2012-06-12T06:45:58Z
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 ┬Ám range, bridging the gap between earlier infrared space missions and groundbased facilities.
Creator Contact https://support.cosmos.esa.int/herschel/
Date Published 2012-12-12T02:56:46Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-12-12T02:56:46Z, OT1_pappleto_1, SPG v14.2.0. https://doi.org/10.5270/esa-ljevttj