A dataset provided by the European Space Agency

Name OT2_jgracia_1
Title Molecular outflows in the most luminous ULIRGs


DOI https://doi.org/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 lum...inosities the outflow trends found
in our previous studies and will be an excellent comparison
sample for future ALMA high-redshift observations of the same
line in objects with similar IR luminosities.
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 ,
Far-infrared Line Spectra of Active Galaxies from the Herschel/PACS Spectrometer: The Complete Database . Fernández-Ontiveros Juan Antonio et al. . The Astrophysical Journal Supplement Series, Volume 226, Issue 2, article id. 19, 26 pp. (2016). . 226 . 10.3847\/0067-0049\/226\/2\/19 . 2016ApJS..226...19F ,
Herschel/PACS OH Spectroscopy of Seyfert, LINER, and Starburst Galaxies . Runco Jordan N. et al. . The Astrophysical Journal . null . null . 2020ApJ...905...57R ,
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/h®erschel/
Date Published 2013-10-21T07:37:54Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, gracia carpio, j., 2013, OT2_jgracia_1, SPG v14.2.0, European Space Agency, https://doi.org/10.5270/esa-6nfc2al