A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy

Rupke, David S. N.; Coil, Alison L.; Geach, J. E.; Tremonti, Christy; Diamond‐Stanic, Aleksandar M.; George, Erin; Hickox, Ryan C.; Kepley, Amanda A.; Leung, Gene C. K.; Moustakas, John; Rudnick, Gregory; Sell, Paul H.

doi:10.1038/s41586-019-1686-1

Cited by 102 publications

(136 citation statements)

References 61 publications

(72 reference statements)

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“…Additionally, it will be necessary to test the geometry against observations of the CGM in emission (e.g. Finley et al 2017;Rupke et al 2019). The main foreground galaxy is to the left and the back1 background galaxy is to the right (north is to the top, east to the left; different orientation from Fig.…”

Section: Discussionmentioning

confidence: 99%

MusE GAs FLOw and Wind (MEGAFLOW) IV. A two sightline tomography of a galactic wind

Zabl

Bouché

Schroetter

et al. 2019

Monthly Notices of the Royal Astronomical Society

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Galactic outflows are thought to eject baryons back out to the circum-galactic medium (CGM). Studies based on metal absorption lines (Mg ii in particular) in the spectra of background quasars indicate that the gas is ejected anisotropically, with galactic winds likely leaving the host in a bi-conical flow perpendicular to the galaxy disk. In this paper, we present a detailed analysis of an outflow from a z = 0.7 "green-valley" galaxy (log(M * /M ) = 9.9; SFR = 0.5 M yr −1 ) probed by two background sources part of the MUSE Gas Flow and Wind (MEGAFLOW) survey. Thanks to a fortuitous configuration with a background quasar (SDSSJ1358+1145) and a bright background galaxy at z = 1.4, both at impact parameters of ≈ 15 kpc, we can -for the first time -probe both the receding and approaching components of a putative galactic outflow around a distant galaxy. We measure a significant velocity shift between the Mg ii absorption from the two sightlines (84 ± 17 km s −1 ), which is consistent with the expectation from our simple fiducial wind model, possibly combined with an extended disk contribution.

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Section: Discussionmentioning

confidence: 99%

MusE GAs FLOw and Wind (MEGAFLOW) IV. A two sightline tomography of a galactic wind

Zabl

Bouché

Schroetter

et al. 2019

Monthly Notices of the Royal Astronomical Society

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“…The recent detection of Mg II-line emitting material out to 20 kpc in Makani, a compact starburst-dominated galaxy at z = 0.459 mapped with deep KCWI IFS data (Fig. 19; Rupke et al 2019), underscores the need for deeper observations. Transverse absorption-line studies of z 1 galaxies using background quasars and galaxies as probes of the CGM have provided additional constraints on the sizes of cool neutral-atomic outflows (see review by Tumlinson et al 2017).…”

Section: Neutral Atomic Gas Componentmentioning

confidence: 95%

“…Current absorption-and emission-line measurements are still severely limited by the sensitivity of current observations, particularly the surface brightness limits of emission-line mapping. On the short term, this can be improved by increasing the exposure times on a few key targets using large-format 3D spectroscopic instruments such as MUSE on the VLT and KCWI on Keck to provide full three-dimensional coverage of the outflows on CGM scales and allow reliable decomposition of the outflowing material from the gravitationally bound material (e.g., Rupke et al 2019). However, robust conclusions based on a statistically significant sample of galaxies will have to wait for the next-generation of ground-based facilities including IFS on ELTs and ngVLA, and space-borne facilities such as SPICA, the Origins Space Telescope, LUVOIR, the Advanced Telescope for High-ENergy Astrophysics (Athena), and the Lynx X-ray telescope.…”

Section: Negative Feedback: Zone Of Influence and Escape Fractionmentioning

confidence: 99%

Cool outflows in galaxies and their implications

Veilleux

Maiolino

Bolatto

et al. 2020

Astron Astrophys Rev

395

310

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Neutral-atomic and molecular outflows are a common occurrence in galaxies, near and far. They operate over the full extent of their galaxy hosts, from the innermost regions of galactic nuclei to the outermost reaches of galaxy halos. They carry a substantial amount of material that would otherwise have been used to form new stars. These cool outflows may have a profound impact on the evolution of their host galaxies and environments. This article provides an overview of the basic physics of cool outflows, a comprehensive assessment of the observational techniques and diagnostic tools used to characterize them, a detailed description of the best-studied cases, and a more general discussion of the statistical properties of these outflows in the local and distant universe. The remaining outstanding issues that have not yet been resolved are summarized at the end of the review to inspire new research directions.

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“…Additionally, the predicted galaxy-halo mass relations do not match observations either (Silk & Rees 1998;Croton et al 2006;Moster et al 2010). Currently there is plenty of observational evidence showing that AGN or black hole feedback has an impact on very different scales, which go from the central tens to hundreds of parsecs (e.g., García-Burillo et al 2021) to hundreds of kiloparsecs (e.g., Rupke et al 2019;Martín-Navarro et al 2021). We now need to understand how AGN feedback works in relation to AGN and host galaxy properties and the coupling between the two while considering the short timescales associated with nuclear activity (Martini et al 2004;Hickox et al 2014).…”

Section: Introductionmentioning

confidence: 97%

The diverse cold molecular gas contents, morphologies, and kinematics of type-2 quasars as seen by ALMA

Almeida

Bischetti

García‐Burillo

et al. 2022

A&A

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We present CO(2−1) and adjacent continuum observations of seven nearby radio-quiet type-2 quasars (QSO2s) obtained with ALMA at ∼0.2″ resolution (370 pc at z ∼ 0.1). These QSO2s are luminous (L[OIII] > 108.5 L⊙ ∼ MB < −23), and their host galaxies massive (M* ∼ 1011 M⊙). The CO morphologies are diverse, including disks and interacting systems. Two of the QSO2s are red early-type galaxies with no CO(2–1) detected. In the interacting galaxies, the central kiloparsec contains 18–25% of the total cold molecular gas, whereas in the spirals it is only ∼5–12%. J1010+0612 and J1430+1339 show double-peaked CO flux maps along the major axis of the CO disks that do not have an optical counterpart at the same angular resolution. Based on our analysis of the ionized and molecular gas kinematics and millimeter continuum emission, these CO morphologies are most likely produced by active galactic nucleus (AGN) feedback in the form of outflows, jets, and/or shocks. The CO kinematics of the QSO2s with CO(2−1) detections are dominated by rotation but also reveal noncircular motions. According to our analysis, these noncircular motions correspond to molecular outflows that are mostly coplanar with the CO disks in four of the QSO2s, and either to a coplanar inflow or vertical outflow in the case of J1010+0612. These outflows represent 0.2–0.7% of the QSO2s’ total molecular gas mass and have maximum velocities of 200–350 km s−1, radii from 0.4 to 1.3 kpc, and outflow mass rates of 8–16 M⊙ yr−1. These outflow properties are intermediate between those of the mild molecular outflows measured for Seyfert galaxies and the fast and energetic outflows shown by ultra-luminous infrared galaxies. This suggests that it is not only AGN luminosity that drives massive molecular outflows. Other factors such as jet power, coupling between winds, jets, and/or ionized outflows and the CO disks, and amount or geometry of dense gas in the nuclear regions might also be relevant. Thus, although we do not find evidence for a significant impact of quasar feedback on the total molecular gas reservoirs and star formation rates, it appears to be modifying the distribution of cold molecular gas in the central kiloparsec of the galaxies.

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A 100-kiloparsec wind feeding the circumgalactic medium of a massive compact galaxy

Abstract: Ninety per cent of baryons are located outside galaxies, either in the circumgalactic or intergalactic medium 1, 2 . Theory points to galactic winds as the primary source of the enriched and 1 arXiv:1910.13507v1 [astro-ph.GA]

Cited by 102 publications

References 61 publications

MusE GAs FLOw and Wind (MEGAFLOW) IV. A two sightline tomography of a galactic wind

MusE GAs FLOw and Wind (MEGAFLOW) IV. A two sightline tomography of a galactic wind

Cool outflows in galaxies and their implications

The diverse cold molecular gas contents, morphologies, and kinematics of type-2 quasars as seen by ALMA

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