@article{b722f55173a84ea7b23282b84c7dbc1c,
title = "JWST MIRI and NIRCam observations of NGC 891 and its circumgalactic medium",
abstract = "We present new JWST observations of the nearby, prototypical edge-on, spiral galaxy NGC 891. The northern half of the disk was observed with NIRCam in its F150W and F277W filters. Absorption is clearly visible in the mid-plane of the F150W image, along with vertical dusty plumes that closely resemble the ones seen in the optical. A ∼10 × 3 kpc2 area of the lower circumgalactic medium (CGM) was mapped with MIRI F770W at 12 pc scales. Thanks to the sensitivity and resolution of JWST, we detect dust emission out to ∼4 kpc from the disk, in the form of filaments, arcs, and super-bubbles. Some of these filaments can be traced back to regions with recent star formation activity, suggesting that feedback-driven galactic winds play an important role in regulating baryonic cycling. The presence of dust at these altitudes raises questions about the transport mechanisms at play and suggests that small dust grains are able to survive for several tens of million years after having been ejected by galactic winds in the disk-halo interface. We lay out several scenarios that could explain this emission: dust grains may be shielded in the outer layers of cool dense clouds expelled from the galaxy disk, and/or the emission comes from the mixing layers around these cool clumps where material from the hot gas is able to cool down and mix with these cool cloudlets. This first set of data and upcoming spectroscopy will be very helpful to understand the survival of dust grains in energetic environments, and their contribution to recycling baryonic material in the mid-plane of galaxies.",
keywords = "Dust, Extinction, ISM: kinematics and dynamics, Galaxies: halos, Galaxies: individual: NGC 891",
author = "J{\'e}r{\'e}my Chastenet and {De Looze}, Ilse and Monica Rela{\~n}o and Dale, {Daniel A.} and Williams, {Thomas G.} and Simone Bianchi and Xilouris, {Emmanuel M.} and Maarten Baes and Bolatto, {Alberto D.} and Boyer, {Martha L.} and Viviana Casasola and Clark, {Christopher J. R.} and Filippo Fraternali and Jacopo Fritz and Fr{\'e}d{\'e}ric Galliano and Glover, {Simon C. O.} and Gordon, {Karl D.} and Hiroyuki Hirashita and Robert Kennicutt and Kentaro Nagamine and Florian Kirchschlager and Klessen, {Ralf S.} and Koch, {Eric W.} and Levy, {Rebecca C.} and Lewis McCallum and Madden, {Suzanne C.} and McLeod, {Anna F.} and Meidt, {Sharon E.} and Mosenkov, {Aleksandr V.} and Richie, {Helena M.} and Am{\'e}lie Saintonge and Sandstrom, {Karin M.} and Schneider, {Evan E.} and Sivkova, {Evgenia E.} and Smith, {J. D. T.} and Smith, {Matthew W. L.} and {van der Wel}, Arjen and Stefanie Walch and Fabian Walter and Kenneth Wood",
note = "Funding: JC, IDL, and MB acknowledge funding from the Belgian Science Policy Office (BELSPO) through the PRODEX project “JWST/MIRI Science exploitation” (C4000142239). MR acknowledges the support from the project PID2020-114414GB-100, financed by MCIN/AEI/10.13039/501100011033. R.C.L. acknowledges support for this work provided by a National Science Foundation (NSF) Astronomy and Astrophysics Postdoctoral Fellowship under award AST-2102625. EWK acknowledges support from the Smithsonian Institution as a Submillimeter Array (SMA) Fellow and the Natural Sciences and Engineering Research Council of Canada. SB and VC acknowledge funding from the INAF Mini Grant 2022 program {\textquoteleft}Face-to-Face with the Local Universe: ISM{\textquoteright}s Empowerment (LOCAL){\textquoteright}. SCOG and RSK acknowledge funding from the Heidelberg Cluster of Excellence EXC 2181 (Project-ID 390900948) {\textquoteleft}STRUCTURES: A unifying approach to emergent phenomena in the physical world, mathematics, and complex data{\textquoteright} supported by the German Excellence Strategy and from the European Research Council in the ERC synergy grant {\textquoteleft}ECOGAL – Understanding our Galactic ecosystem: From the disk of the Milky Way to the formation sites of stars and planets{\textquoteright} (project ID 855130). RSK also thanks for support from the German Ministry for Economic Affairs and Climate Action in project “MAINN” (funding ID 50OO2206). KN acknowledges support from the MEXT/JSPS KAKENHI grant numbers 19H05810, 20H00180, 22K21349, 24H00002, and 24H00241, as well as that from the Kavli IPMU, World Premier Research Center Initiative (WPI). SW gratefully acknowledges the Collaborative Research Center 1601 (SFB 1601 sub-project B6) funded by the Deutsche Forschungsgemeinschaft (DFG) – grant number 500700252.",
year = "2024",
month = oct,
day = "1",
doi = "10.1051/0004-6361/202451033",
language = "English",
volume = "690",
journal = "Astronomy & Astrophysics",
issn = "0004-6361",
publisher = "EDP SCIENCES S A",
}