When H II regions are complicated

• Verfasst von: Geen, Samuel Thomas [VerfasserIn]
• Verfasst von: Pellegrini, Eric William [VerfasserIn]
• Verfasst von: Bieri, Rebekka [VerfasserIn]
• Verfasst von: Klessen, Ralf S. [VerfasserIn]
• Titel: When H II regions are complicated
• Titelzusatz: considering perturbations from winds, radiation pressure, and other effects
• Verf.angabe: Sam Geen, Eric Pellegrini, Rebekka Bieri and Ralf Klessen
• Jahr: 2020
• Jahr des Originals: 2019
• Umfang: 19 S.
• Fussnoten: Advance access publication 2019 December 11 ; Gesehen am 09.04.2020
• Titel Quelle: Enthalten in: Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society
• Ort Quelle: Oxford : Oxford Univ. Press, 1827
• Jahr Quelle: 2020
• Band/Heft Quelle: 492(2020), 1, Seite 915-933
• ISSN Quelle: 1365-2966
• DOI: doi:10.1093/mnras/stz3491
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1694304302

Abstract

We explore to what extent simple algebraic models can be used to describe H II regions when winds, radiation pressure, gravity, and photon breakout are included. We (a) develop algebraic models to describe the expansion of photoionized H II regions under the influence of gravity and accretion in power-law density fields with ρ ∝ r−w, (b) determine when terms describing winds, radiation pressure, gravity, and photon breakout become significant enough to affect the dynamics of the H ii region where w = 2, and (c) solve these expressions for a set of physically motivated conditions.