Navigation überspringen
Universitätsbibliothek Heidelberg
Status: Bibliographieeintrag

Verfügbarkeit
Standort: ---
Exemplare: ---
heiBIB
 Online-Ressource
Verfasst von:Sormani, Mattia C. [VerfasserIn]   i
 Treß, Robin G. [VerfasserIn]   i
 Ridley, Matthew [VerfasserIn]   i
 Glover, Simon [VerfasserIn]   i
 Klessen, Ralf S. [VerfasserIn]   i
 Binney, James [VerfasserIn]   i
 Magorrian, John [VerfasserIn]   i
 Smith, Rowan [VerfasserIn]   i
Titel:A theoretical explanation for the Central Molecular Zone asymmetry
Verf.angabe:Mattia C. Sormani, Robin G. Treß, Matthew Ridley, Simon C. O. Glover, Ralf S. Klessen, James Binney, John Magorrian and Rowan Smith
E-Jahr:2018
Jahr:20 December 2017
Jahr des Originals:2017
Umfang:21 S.
Fussnoten:Gesehen am 30.03.2020
Titel Quelle:Enthalten in: Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society
Ort Quelle:Oxford : Oxford Univ. Press, 1827
Jahr Quelle:2018
Band/Heft Quelle:475(2018), 2, Seite 2383-2402
ISSN Quelle:1365-2966
Abstract:Abstract: It has been known for more than 30 yr that the distribution of molecular gas in the innermost 300 parsecs of the Milky Way, the Central Molecular Zone, , is strongly asymmetric. Indeed, approximately three quarters of molecular emission come from positive longitudes, and only one quarter from negative longitudes. However, despite much theoretical effort, the origin of this asymmetry has remained a mystery. Here, we show that the asymmetry can be neatly explained by unsteady flow of gas in a barred potential. We use high-resolution 3D hydrodynamical simulations coupled to a state-of-the-art chemical network. Despite the initial conditions and the bar potential being point symmetric with respect to the Galactic Centre, asymmetries develop spontaneously due to the combination of a hydrodynamical instability known as the ‘wiggle instability’ and the thermal instability. The observed asymmetry must be transient: observations made tens of megayears in the past or in the future would often show an asymmetry in the opposite sense. Fluctuations of amplitude comparable to the observed asymmetry occur for a large fraction of time in our simulations, and suggest that the present is not an exceptional moment in the life of our Galaxy.
DOI:doi:10.1093/mnras/stx3258
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext ; Verlag: https://doi.org/10.1093/mnras/stx3258
 Volltext: https://academic.oup.com/mnras/article/475/2/2383/4768275
 DOI: https://doi.org/10.1093/mnras/stx3258
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1693464411
Verknüpfungen:→ Zeitschrift

Permanenter Link auf diesen Titel (bookmarkfähig):  https://katalog.ub.uni-heidelberg.de/titel/68559190   QR-Code
zum Seitenanfang