A dataset provided by the European Space Agency

Name OT1_sveilleu_3
Title Molecular Outflows in Gas-Rich Mergers
URL

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DOI 10.5270/esa-ocqo6i0
Author veilleux, s.
Description The role of galactic winds in gas-rich mergers is of crucial importance to understand galaxy and supermassive black hole evolution. In recent months, our group has had two major scientific breakthroughs in this area: (1) the discovery from our SHINING guaranteed-time PACS survey of ultraluminous infrared galaxies (ULIRGs) of a 1400-km-s molecular OH wind in the nearest quasar, Mrk 231. (2) The independent discovery from mm-wave CO interferometric observations in the same object of a spatially resolved molecular wind with estimated mass outflow rate 4-10x larger than the star formation rate. Remarkably this CO outflow coincides spatially with blueshifted neutral gas in our optical spectra. This powerful outflow may be the long-sought "smoking gun" of quasar mechanical feedback purported to transform gas-rich mergers. However, our SHINING survey contains only 2 other warm quasar-dominated late stage mergers like Mrk 231 (one of them also shows a high-velocity OH outflow, while the other has not yet been observed). So here we request 32.5h to obtain high-S-N OH 119 um spectra of 15 additional quasar-dominated late stage mergers. We have a comprehensive set of multiwavelength data on all of these objects, including crucial spatially resolved optical Na ID absorption spectroscopy. The combined sample of 20 cold ULIRGs and 18 warm ULIRGs-QSOs will allow us to address the role of mechanical feedback in mergers after the first peri-passage, i.e. when mechanical feedback from the starburst-QSO is predicted to be at its maximum. We will look for trends between the basic measured properties of OH (incidence of absorption, kinematics, column densities) and host-evolutionary indicators. In cases of kinematic match between OH features and spatially resolved neutral-gas clouds, we will be able to infer the masses and kinetic energies of these outflows. Measured velocities in excess of ~1000 km-s or inferred mass outflow rates mu...
Publication Fast Molecular Outflows in Luminous Galaxy Mergers: Evidence for Quasar Feedback from Herschel . Veilleux S. et al. . The Astrophysical Journal, Volume 776, Issue 1, article id. 27, 21 pp. (2013). . 776 . 10.1088\/0004-637X\/776\/1\/27 . 2013ApJ...776...27V ,
The Search for Molecular Outflows in Local Volume AGNs with Herschel-PACS . Stone M. et al. . The Astrophysical Journal, Volume 826, Issue 2, article id. 111, 24 pp. (2016). . 826 . 10.3847\/0004-637X\/826\/2\/111 . 2016ApJ...826..111S ,
Instrument PACS_PacsRangeSpec_point
Temporal Coverage 2011-07-08T14:54:44Z/2012-02-20T19:32:27Z
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 2012-08-20T14:56:57Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2012-08-20T14:56:57Z, OT1_sveilleu_3, SPG v14.2.0. https://doi.org/10.5270/esa-ocqo6i0