A dataset provided by the European Space Agency

Name OT1_mcluver_2
Title Death by Debris: Testing a new picture of Star Formation Quenching in Compact Groups
URL

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DOI 10.5270/esa-2pql4vn
Author cluver, m.
Description Recent studies show that compact groups appear to follow an evolutionary sequence, linked to gas depletion, caused by interactions in the dense environment. Spitzer photometry of Hickson Compact Groups show a distinctive gap in IRAC colour-colour space, suggesting rapid evolution from dusty to dust-free systems which seems to correlate with HI-depletion in the galaxies, but the mechanism responsible is poorly understood. Originally ram-pressure stripping, by analogy with clusters, was thought to be responsible, but the HI depletion is uncorrelated with the presence of hot X-ray gas. Based on our recent Spitzer spectroscopy of a sample of HCGs, we propose a new hypothesis that connects the colour evolution to the HI-depletion seen in the group galaxies. In this scenario, galaxies collide with previously stripped tidal debris, that either heats the disk ISM or strips it, thus shutting off star formation and accelerating the transition from dusty, gas-rich disks to gas-poor, dust-free systems. PACS deep [OI]63 and CII[158] maps allow us to look for smooth bow shock or clumpy shock signatures to discern between heating and stripping of the disk gas. SPIRE cold dust imaging will allow us to search for additional evidence of disk disruption and truncation. This project requires 80.6 hours of observing time.
Publication Herschel observations of Hickson compact groups of galaxies: Unveiling the properties of cold dust . Bitsakis T. et al. . Astronomy & Astrophysics, Volume 565, id.A25, 31 pp. . 565 . 10.1051\/0004-6361\/201323349 . 2014A&A...565A..25B ,
Instrument SPIRE_SpireSpectrometer_, SPIRE_SpirePhoto_small, SPIRE_SpirePhoto_large, PACS_PacsRangeSpec_large
Temporal Coverage 2011-06-20T18:47:56Z/2013-03-23T21:08:41Z
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 2013-09-23T19:34:41Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-09-23T19:34:41Z, OT1_mcluver_2, SPG v14.2.0. https://doi.org/10.5270/esa-2pql4vn