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The molecular phase of supernova-driven outflows originates from the cold, molecular gas in the disc of a star-forming galaxy, and may carry a substantial fraction of the wind mass flux in some galaxies, but it remains poorly understood.…

Astrophysics of Galaxies · Physics 2024-04-24 Aditi Vijayan , Mark R. Krumholz

We have surveyed 84 Class 0, Class I, and flat-spectrum protostars in mid-infrared [Si II], [Fe II] and [S I] line emission, and 11 of these in far-infrared [O I] emission. We use the results to derive their mass outflow rates. Thereby we…

AGN-driven outflows are invoked by galaxy evolutionary models to quench star formation and to explain the origin of the relations observed locally between super massive black holes and their host galaxies. This work aims to detect the…

We examine the growth of the stellar content of galaxies from z=3-0 in cosmological hydrodynamic simulations incorporating parameterised galactic outflows. Without outflows, galaxies overproduce stellar masses (M*) and star formation rates…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Romeel Davé , Benjamin D. Oppenheimer , Kristian Finlator

Stellar feedback is an essential step in the baryon cycle of galaxies, but it remains unconstrained beyond Cosmic Noon. We study the ionized gas kinematics, dynamical mass and gas-flow properties of a sample of 16 sub-$L^{\star}$…

Cool clouds are expected to be destroyed and incorporated into hot supernova-driven galactic winds. The mass-loading of a wind by the cool medium modifies the bulk velocity, temperature, density, entropy, and abundance profiles of the hot…

Astrophysics of Galaxies · Physics 2021-10-13 Dustin D. Nguyen , Todd A. Thompson

The feedback from galactic outflows is thought to play an important role in shaping the gas content, star formation history, and ultimately the stellar mass function of galaxies. Here we present evidence for massive molecular outflows…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Aeree Chung , Min S. Yun , Gopal Naraynan , Mark Heyer , Neal R. Erickson

Two of the dominant channels for galaxy mass assembly are cold flows (cold gas supplied via the filaments of the cosmic web) and mergers. How these processes combine in a cosmological setting, at both low and high redshift, to produce the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Leila C. Powell , Frederic Bournaud , Damien Chapon , Julien Devriendt , Adrianne Slyz , Romain Teyssier

Using the extremely high S/N quasar absorption-line sample described in the first paper of the series, we investigate which intergalactic CIV absorption line systems could be directly associated with galactic outflows at z = 2 - 3.5 from an…

Astrophysics · Physics 2008-11-26 Antoinette Songaila

An important property of star-forming galaxies at z~1-2 is the high local star-formation intensities they maintain over tens of kiloparsecs at levels that are only observed in the nearby Universe in the most powerful nuclear starbursts. To…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 L. Le Tiran , M. D. Lehnert , W. van Driel , N. P. H. Nesvadba , P. Di Matteo

The Large Magellanic Cloud (LMC) is home to many HII regions, which may lead to significant outflows. We examine the LMC's multiphase gas ($T\sim10^{4-5}$ K) in HI, SII, SiIV, and CIV using 110 stellar sight lines from the HST's Ultraviolet…

We performed a suit of three-dimensional hydrodynamical simulations with a resolution of $\sim10$ parsecs to investigate the development of multiphase galactic wind in M82. The star formation and related feedback processes are solved…

Astrophysics of Galaxies · Physics 2025-03-17 Xue-Fu Li , Weishan Zhu , Tian-Rui Wang , Long-Long Feng

We present an analysis of the MgII 2796, 2803 and FeII 2586, 2600 absorption line profiles in coadded spectra of 468 galaxies at 0.7 < z < 1.5. The galaxy sample, drawn from the Team Keck Treasury Redshift Survey of the GOODS-N field, has a…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Kate H. R. Rubin , Benjamin J. Weiner , David C. Koo , Crystal L. Martin , J. Xavier Prochaska , Alison L. Coil , Jeffrey A. Newman

X-ray properties of hot interstellar gas in a starburst galaxy NGC 253 were investigated to gain a further understanding of starburst-driven outflow activity by XMM-Newton and Suzaku. Spectroscopic analysis for three regions of the galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Ikuyuki Mitsuishi , Noriko Y. Yamasaki , Yoh Takei

AGN-driven outflows are now routinely used in models of galaxy evolution as a feedback mechanism, however many of their properties remain highly uncertain. Perhaps the greatest source of uncertainty is the electron density of the outflowing…

Astrophysics of Galaxies · Physics 2023-01-25 Luke R. Holden , Clive N. Tadhunter , Raffaella Morganti , Tom Oosterloo

Galactic winds and mass outflows are observed both in nearby starburst galaxies and in high-redshift star-forming galaxies. In this paper we develop a simple analytic model to understand the observed superwind phenomenon. Our model is built…

Astrophysics · Physics 2014-10-13 Chenggang Shu , H. J. Mo , Shude Mao

Gas accretion and stellar feedback processes link metal content, star formation, and gas and stellar mass (and the potential depth) in star-forming galaxies. Constraining this hypersurface has been challenging because of the need for…

Astrophysics of Galaxies · Physics 2021-12-22 C. Tortora , L. K. Hunt , M. Ginolfi

We present spatially resolved maps of morphology, kinematics, and energetics of warm ionized gas in six powerful radio galaxies at z=3.5-4, using JWST/NIRSpec IFU to quantify jet-driven feedback in the early universe. All sources exhibit…

Astrophysics of Galaxies · Physics 2025-08-12 Namrata Roy , Timothy Heckman , Alaina Henry

We present a spatially resolved, multiphase study of the outflow in the edge-on starburst galaxy ESO~484-036 from the GECKOS survey, combining VLT/MUSE H$\alpha$ and ALMA CO(1$-$0) observations to analyse the atomic ionised and cold…

A model for gas outflows is proposed which simultaneously explains the correlations between the (i) equivalent width of low ionization and Ly-alpha lines, (ii) outflow velocity, and (iii) star formation rate observed in Lyman Break Galaxies…

Astrophysics · Physics 2009-11-11 A. Ferrara , M. Ricotti
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