JADES: The incidence rate and properties of galactic outflows in low-mass galaxies across 3 &lt; <i>z</i> &lt; 9

Carniani, Stefano; Venturi, Giacomo; Parlanti, Eleonora; de Graaff, Anna; Maiolino, Roberto; Arribas, Santiago; Bonaventura, Nina; Boyett, Kristan; Bunker, Andrew J.; Cameron, Alex J.; Charlot, Stephane; Chevallard, Jacopo; Curti, Mirko; Curtis-Lake, Emma; Eisenstein, Daniel J.; Giardino, Giovanna; Hausen, Ryan; Kumari, Nimisha; Maseda, Michael V.; Nelson, Erica; Perna, Michele; Rix, Hans-Walter; Robertson, Brant; Del Pino, Bruno Rodríguez; Sandles, Lester; Scholtz, Jan; Simmonds, Charlotte; Smit, Renske; Tacchella, Sandro; Übler, Hannah; Williams, Christina C.; Willott, Chris; Witstok, Joris

doi:10.1051/0004-6361/202347230

Cited by 8 publications

(3 citation statements)

References 115 publications

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“…Details of the data acquisition and reduction details are given in other works (Curtis-Lake et al 2023;Carniani et al 2024), which we summarise here. Targets were observed with three shutters in a three-point nod.…”

Section: Observation Overviewmentioning

confidence: 99%

JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

Jones,

Bunker,

Saxena

et al. 2024

A&A

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The rest-frame UV recombination emission line can be powered by ionising photons from young massive stars in star-forming galaxies, but the fact that it can be resonantly scattered by neutral gas complicates its interpretation. For reionisation-era galaxies, a neutral intergalactic medium will scatter from the line of sight, making a useful probe of the neutral fraction evolution. Here, we explore in JWST/NIRSpec spectra from the ongoing JADES programme, which targets hundreds of galaxies in the well-studied GOODS-S and GOODS-N fields. These sources are UV-faint ($-20.4< UV <-16.4$) and thus represent a poorly explored class of galaxy. We fitted the low spectral resolution spectra ($R of a subset of 84 galaxies in GOODS-S with spec >5.6$ (as derived with optical lines) with line and continuum models to search for significant line emission. Through exploration of the R100 data, we find evidence for in 17 sources. This sample allowed us to place observational constraints on the fraction of galaxies with emission in the redshift range $5.6<z<7.5$, with a decrease from $z=6$ to $z=7$. We also find a positive correlation between the equivalent width and UV $, as seen in other samples. We used these results to estimate the neutral gas fraction at $z and our estimates are in agreement with previous results HI sim0.5-0.9$).

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Section: Observation Overviewmentioning

confidence: 99%

JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

Jones,

Bunker,

Saxena

et al. 2024

A&A

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“…, indicating that the ongoing outflow wind is unlikely to escape from the DM halos. We compare our results with Carniani et al (2024), who also identified [O III] outflows in z ∼ 4-7 galaxies from JADES spectroscopic data. We adopt the emission line measurements and M * estimation from Tables 2 and 3…”

Section: Broad [O Iii] Emission In Nirspec Spectroscopymentioning

confidence: 65%

“…The first possibility is different viewing angles of galaxies with biconical outflows, which has been observed in local galaxies (e.g., Venturi et al 2018) and recently proposed by Carniani et al (2024) at high z. Assuming a biconical outflow with an opening angle (θ), the broad emission lines can only be observed in the directions of the outflow.…”

Section: Origins Of [O Iii] Spatial Extent and Ongoing Outflowmentioning

confidence: 96%

Statistics for Galaxy Outflows at z ∼ 6–9 with Imaging and Spectroscopic Signatures Identified with JWST/NIRCam and NIRSpec Data

Zhang,

Ouchi,

Nakajima

et al. 2024

ApJ

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We present statistics of z ∼ 6–9 galaxy outflows indicated by spatially extended gas emission and broad lines. With a total of 61 spectroscopically confirmed galaxies at z ∼ 6–9 in the JWST CEERS, GLASS, and ERO data, we find four galaxies with [O iii] + Hβ ionized gas emission significantly extended beyond the kiloparsec-scale stellar components on the basis of the emission line images constructed by the subtraction of NIRCam broadband (line on/off-band) images. By comparison with low-z galaxies, the fraction of galaxies with spatially extended gas, 4/18, at z ∼ 6–9 is an order of magnitude higher than that at z ∼ 0–1, which can be explained by events triggered by frequent major mergers at high redshift. We also investigate medium- and high-resolution NIRSpec spectra of 30 galaxies at z ∼ 6–9, and identify five galaxies with broad (140−800 km s−1) lines in the [O iii] forbidden line emission, suggestive of galaxy outflows. One galaxy at z = 6.38 shows both spatially extended gas emission and the broad lines, while none of the galaxies with spatially extended gas emission or broad lines present a clear signature of active galactic nuclei (AGN) in either the line diagnostics or type 1 AGN line broadening (>1000 km s−1), which suggests that outflows are mainly driven by stellar feedback. The existence of galaxies with/without spatially extended gas emission or broad lines may be explained by different viewing angles toward outflows or the fact that these are galaxies in the early, late, or post phases of galaxy outflows at high redshift, where relatively large fractions of such galaxies indicate longer-duration and/or more frequent outflows at early cosmic epochs.

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GA-NIFS: Co-evolution within a highly star-forming galaxy group at z ∼ 3.7 witnessed by JWST/NIRSpec IFS

Rodríguez Del Pino,

Perna,

Arribas

et al. 2024

A&A

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We present NIRSpec IFS observations of a galaxy group around the massive GS\_4891 galaxy at $z in GOODS-South that includes two other two systems, GS\_4891\_n to the north and GS\_28356 to the east. These observations, obtained as part of the GTO Galaxy Assembly - NIRSpec IFS (GA-NIFS) program, allow us to study for the first time the spatially resolved properties of the interstellar medium (ISM) and the ionised gas kinematics of a galaxy at this redshift. Leveraging the wide wavelength range spanned with the high-dispersion grating (with resolving power R=2700) observations, covering from to we explore the spatial distribution of the star formation rate, nebular attenuation, and gas metallicity, together with the mechanisms responsible for the excitation of the ionised gas. GS\_4891 presents a clear gradient of gas metallicity (as traced by 12 + log(O/H)) by more than 0.2 dex from the southeast (where a star-forming clump is identified) to the northwest. The gas metallicity in the less massive northern system, GS\_4891\_n, is also higher by 0.2 dex than at the centre of GS\_4891, suggesting that inflows of lower-metallicity gas might be favoured in higher-mass systems. The kinematic analysis shows that GS\_4891 presents velocity gradients in the ionised gas consistent with rotation. The region between GS\_4891 and GS\_4891\_n does not present high gas turbulence, which, together with the difference in gas metallicities, suggests that these two systems might be in a pre-merger stage. Finally, GS\_4891 hosts an ionised outflow that extends out to $r_ out $=$1.5$ kpc from the nucleus and reaches maximum velocities out of approximately 400 km/s. Despite entraining an outflowing mass rate of $ M out odot $/yr, the low associated mass-loading factor, $ implies that the outflow does not have a significant impact on the star formation activity of the galaxy.

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JADES: The incidence rate and properties of galactic outflows in low-mass galaxies across 3 < z < 9

Cited by 8 publications

References 115 publications

JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

JADES: The emergence and evolution of Lyα emission and constraints on the intergalactic medium neutral fraction

Statistics for Galaxy Outflows at z ∼ 6–9 with Imaging and Spectroscopic Signatures Identified with JWST/NIRCam and NIRSpec Data

GA-NIFS: Co-evolution within a highly star-forming galaxy group at z ∼ 3.7 witnessed by JWST/NIRSpec IFS

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