BASS XXXVII: the role of radiative feedback in the growth and obscuration properties of nearby supermassive black holes

Galaxie

BASS. XXIX. The near-infrared view of the broad-line region (BLR): the effects of obscuration in BLR characterization

Galaxie

GOALS-JWST: unveiling dusty compact sources in the merging galaxy IIZw096

Galaxie

GOALS-JWST: hidden star formation and extended PAH emission in the luminous infrared galaxy VV 114

Galaxie

GOALS-JWST: resolving the circumnuclear gas dynamics in NGC 7469 in the mid-infrared

Galaxie

GOALS-JWST: tracing AGN feedback on the star-forming interstellar medium in NGC 7469

Galaxie

Investigating starburst-driven neutrino emission from GOALS galaxies

International audienceWe developed a framework for high-energy neutrino production in the dense central regions of starburst galaxies and apply it to (ultra)luminous infrared galaxies (U/LIRGs) in the Great Observatories All-Sky LIRG Survey (GOALS). First, we present results from our case study of the LIRG NGC 3690 (Arp 299, Mrk 171) which we compare to the current sensitivity of the IceCube Neutrino Observatory at the South Pole. Then, we make per-source flux predictions for all the U/LIRGs in GOALS. In particular, we conclude that our starburst-driven flux prediction cannot explain the neutrino flux recently observed by IceCube from the direction of the LIRG NGC 1068. This hints toward a non-starburst component, such as the active galactic nucleus in this galaxy, as the dominant source of the observed neutrinos. Last we use the per-source flux predictions to estimate the diffuse starburst-driven neutrino flux from the GOALS sample

After the Fall: Resolving the Molecular Gas in Post-starburst Galaxies

Post-starburst (PSB), or "E + A,"galaxies represent a rapid transitional phase between major, gas-rich mergers and gas-poor, quiescent, early-type galaxies. Surprisingly, many PSBs have been shown to host a significant interstellar medium (ISM), despite theoretical predictions that the majority of the star-forming gas should be expelled in active galactic nuclei- or starburst-driven outflows. To date, the resolved properties of this surviving ISM have remained unknown. We present high-resolution ALMA continuum and CO(2-1) observations in six gas- and dust-rich PSBs, revealing for the first time the spatial and kinematic structure of their ISM on sub-kpc scales. We find extremely compact molecular reservoirs, with dust and gas surface densities rivaling those found in (ultra)luminous infrared galaxies. We observe spatial and kinematic disturbances in all sources, with some also displaying disk-like kinematics. Estimates of the internal turbulent pressure in the gas exceed those of normal star-forming disks by at least 2 orders of magnitude, and rival the turbulent gas found in local interacting galaxies, such as the Antennae. Though the source of this high turbulent pressure remains uncertain, we suggest that the high incidence of tidal disruption events in PSBs could play a role. The star formation in these PSBs' turbulent central molecular reservoirs is suppressed, forming stars only 10% as efficiently as starburst galaxies with similar gas surface densities. "The fall"of star formation in these galaxies was not precipitated by complete gas expulsion or redistribution. Rather, this high-resolution view of PSBs' ISM indicates that star formation in their remaining compact gas reservoirs is suppressed by significant turbulent heating. © 2022. The Author(s). Published by the American Astronomical Society.Open access journalThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at [email protected]