[CII] halos in ALPINE galaxies: smoking-gun of galactic outflows?

Abstract

ALMA observations have revealed that many high redshift galaxies are surrounded by extended (10-15 kpc) [CII]-emitting halos which are not predicted by even the most advanced zoom-in simulations. Using a semi-analytical model, in a previous work we suggested that such halos are produced by starburst-driven, catastrophically cooling outflows. Here, we further improve the model and compare its predictions with data from 7 star-forming ($10\lesssim SFR/{\mathrm{M}}_{\odot }\mathrm{y}{\mathrm{r}}^{-1}<100$) galaxies at z=4-6, observed in the ALPINE survey. We find that (a) detected [CII] halos are a natural by-product of starburst-driven outflows; (b) the outflow mass loading factors are in the range $4\lesssim \eta \lesssim 7$, with higher $\eta$ values for lower-mass, lower-SFR systems, and scale with stellar mass as $\eta \propto M_{\ast }^{-0.43}$, consistently with the momentum-driven hypothesis. Our model suggests that outflows are widespread phenomena in high-z galaxies. However, in low-mass systems the halo extended [CII] emission is likely too faint to be detected with the current levels of sensitivity.

Accepted for publication in MNRAS. 11 pages, 6 figures

References in corpus (38)

• The NumPy array: a structure for efficient numerical computation
• UV Luminosity Functions at redshifts z~4 to z~10: 10000 Galaxies from HST Legacy Fields
• The Origin of the Galaxy Mass-Metallicity Relation and Implications for Galactic Outflows
• The MUSE Hubble Ultra Deep Field Survey: I. Survey description, data reduction and source detection
• Markov Chain Monte Carlo Methods for Bayesian Data Analysis in Astronomy
• Magnetized Gas Clouds can Survive Acceleration by a Hot Wind
• The Launching of Cold Clouds by Galaxy Outflows I: Hydrodynamic Interactions with Radiative Cooling
• Reionization Era Bright Emission Line Survey: Selection and Characterization of Luminous Interstellar Medium Reservoirs in the z>6.5 Universe
• [CII] 158 $\mu$m Emission as a Star Formation Tracer
• The ALPINE-ALMA [CII] survey: Star-formation-driven outflows and circumgalactic enrichment in the early Universe
• Tracing the reionization epoch with ALMA: [CII] emission in z~7 galaxies
• Hydrodynamical Coupling of Mass and Momentum in Multiphase Galactic Winds
• Deep into the structure of the first galaxies: SERRA views
• The Structure of Multiphase Galactic Winds
• Zooming on the internal structure of $z\simeq 6$ galaxies
• Simulating cosmic metal enrichment by the first galaxies
• The impact of chemistry on the structure of high-z galaxies
• A Review of Recent Observations of Galactic Winds Driven by Star Formation
• Kinematics of $z\ge 6$ galaxies from [CII] line emission
• A Search for H-Dropout Lyman Break Galaxies at z~12-16
• ALMA reveals metals yet no dust within multiple components in CR7
• SIGAME simulations of the [CII], [OI] and [OIII] line emission from star forming galaxies at z ~ 6
• A survey of high-$z$ galaxies: SERRA simulations
• A kiloparsec view of a typical star-forming galaxy when the Universe was ~1 Gyr old. Part I. Outflow, halo, and interstellar medium properties
• Dynamical characterization of galaxies up to $z\sim 7$
• Introducing SPHINX-MHD: The Impact of Primordial Magnetic Fields on the First Galaxies, Reionization, and the Global 21cm Signal
• ALMA reveals extended cool gas and hot ionized outflows in a typical star-forming galaxy at $z=7.13$
• Ubiquitous Molecular Outflows in z > 4 Massive, Dusty Galaxies II. Momentum-Driven Winds Powered by Star Formation in the Early Universe
• The Production of Cold Gas Within Galaxy Outflows
• High [OIII]/[CII] surface brightness ratios trace early starburst galaxies
• Neutral CGM as damped Lyα absorbers at high redshift
• Catastrophic Cooling in Superwinds: Line Emission and Non-equilibrium Ionization
• The stellar populations of high-redshift dwarf galaxies
• Constraints on the [CII] luminosity of a proto-globular cluster at z~6 obtained with ALMA
• Dwarf satellites of high-z Lyman Break Galaxies: a free lunch for JWST
• An Empirical Determination of the Dependence of the Circumgalactic Mass Cooling Rate and Feedback Mass Loading Factor on Galactic Stellar Mass
• ALPINE: A Large Survey to Understand Teenage Galaxies
• Catastrophic Cooling in Superwinds. II. Exploring the Parameter Space

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• Multi-phase black-hole feedback and a bright [CII] halo in a Lo-BAL quasar at $z\sim 6.6$
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