dc.contributor.author | Bending, TJR | |
dc.contributor.author | Dobbs, CL | |
dc.contributor.author | Bate, MR | |
dc.date.accessioned | 2020-05-14T12:17:53Z | |
dc.date.issued | 2020-05-11 | |
dc.description.abstract | We present simulations of a 500 pc2 region, containing gas of mass 4 × 106 M⊙, extracted from an entire spiral galaxy simulation, scaled up in resolution, including photoionising feedback from stars of mass > 18 M⊙. Our region is evolved for 10 Myr and shows clustered star formation along the arm generating ≈ 5000 cluster sink particles ≈ 5% of which contain at least one of the ≈ 4000 stars of mass > 18 M⊙. Photoionisation has a noticeable effect on the gas in the region, producing ionised cavities and leading to dense features at the edge of the HII regions. Compared to the no-feedback case, Photoionisation produces a larger total mass of clouds and clumps, with around twice as many such objects, which are individually smaller and more broken up. After this we see a rapid decrease in the total mass in clouds and the number of clouds. Unlike studies of isolated clouds, our simulations follow the long range effects of ionisation, with some already-dense gas, becoming compressed from multiple sides by neighbouring HII regions. This causes star formation that is both accelerated and partially displaced throughout the spiral arm with up to 30% of our cluster sink particle mass forming at distances > 5 pc from sites of sink formation in the absence of feedback. At later times, the star formation rate decreases to below that of the no-feedback case. | en_GB |
dc.description.sponsorship | European Union Horizon 2020 | en_GB |
dc.description.sponsorship | European Union FP7 | en_GB |
dc.identifier.citation | Vol. 495 (2), pp. 1672 – 1691 | en_GB |
dc.identifier.doi | 10.1093/mnras/staa1293 | |
dc.identifier.grantnumber | 818940 | en_GB |
dc.identifier.grantnumber | 339248 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/121042 | |
dc.language.iso | en | en_GB |
dc.publisher | Oxford University Press (OUP) / Royal Astronomical Society | en_GB |
dc.rights | © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society | en_GB |
dc.subject | galaxies: star formation | en_GB |
dc.subject | ISM: clouds | en_GB |
dc.subject | methods: numerical | en_GB |
dc.subject | hydrodynamics | en_GB |
dc.subject | radiative transfer | en_GB |
dc.subject | HII regions | en_GB |
dc.title | Photoionizing feedback in spiral arm molecular clouds | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-05-14T12:17:53Z | |
dc.identifier.issn | 0035-8711 | |
dc.description | This is the author accepted manuscript. The final version is available from Oxford University Press via the DOI in this record | en_GB |
dc.identifier.journal | Monthly Notices of the Royal Astronomical Society | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
rioxxterms.version | AM | en_GB |
rioxxterms.licenseref.startdate | 2020-05-11 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-05-14T12:14:06Z | |
refterms.versionFCD | AM | |
refterms.dateFOA | 2020-05-14T12:18:06Z | |
refterms.panel | B | en_GB |