A dataset provided by the European Space Agency

Name OT2_jgracia_1
Title Molecular outflows in the most luminous ULIRGs


DOI 10.5270/esa-6nfc2al
Author gracia carpio, j.
Description One of Herschel.s most important legacies will be the detection and systematic study of large-scale molecular outflows. Galaxy outflows are a key ingredient in galaxy evolution: they regulate the growth of galaxies reducing the amount of molecular gas available for star formation, contribute to establish the observed correlation between the black hole mass of a galaxy and the stellar velocity dispersion of its bulge, and play a critical role in the morphological transformation of gas-rich mergers into ellipticals. Before the launch of Herschel, our knowledge of the properties of galactic outflows was mostly limited to the study of the ionized and neutral atomic gas. Little was known about the amount of molecular gas involved in the outflows, its velocity structure and spatial distribution. Herschel revolutionized this field. Since 2009 our group has discovered powerful molecular outflows in the majority of the ultraluminous infrared galaxies (ULIRG) studied. These outflows can be easily identified in the form of strong blue-shifted absorption and red-shifted emission P-Cygni profiles in the OH 119, 79 and 65micron lines. The outflows in some of these galaxies have maximum velocities >1000km-s, mass outflow rates several times larger than the SFR in the galaxy, and molecular gas depletion times <10Myr. Objects with higher AGN luminosity appear to have higher terminal outflow velocities and shorter gas depletion timescales, which indicates that the molecular outflows in these systems might be mostly driven by the AGN. Here we propose to complement current Herschel molecular outflow studies observing a sample of 10 ULIRGs selected among the most IR luminous objects in the local Universe. We will use the redshifted OH 119micron doublet for this purpose. These observations will extend to higher SFR and AGN luminosities the outflow trends found in our previous studies and will be an excellent comparison sample for future A...
Publication Molecular gas inflows and outflows in ultraluminous infrared galaxies at z ̃ 0.2 and one QSO at z = 6.1 . Herrera-Camus R. et al. . Astronomy and Astrophysics . null . null . 2020A&A...633L...4H ,
Instrument PACS_PacsRangeSpec_point
Temporal Coverage 2013-03-21T14:17:23Z/2013-04-21T11:40:09Z
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/herschel/
Date Published 2013-10-21T07:37:54Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, 2013-10-21T07:37:54Z, OT2_jgracia_1, SPG v14.2.0. https://doi.org/10.5270/esa-6nfc2al