Journal ArticleDOI
Interstellar bubbles. II - Structure and evolution
Reads0
Chats0
TLDR
In this article, the detailed structure of the interaction of a strong stellar wind with the interstellar medium is presented, including the effects of thermal conduction between the hot interior and the cold shell of swept-up interstellar matter.Abstract:
The detailed structure of the interaction of a strong stellar wind with the interstellar medium is presented. First, an adiabatic similarity solution is given which is applicable at early times. Second, a similarity solution is derived which includes the effects of thermal conduction between the hot (about 1 million K) interior and the cold shell of swept-up interstellar matter. This solution is then modified to include the effects of radiative energy losses. The evolution of an interstellar bubble is calculated, including the radiative losses. The quantitative results for the outer-shell radius and velocity and the column density of highly ionized species such as O VI are within a factor 2 of the approximate results of Castor, McCray, and Weaver (1975). The effect of stellar motion on the structure of a bubble, the hydrodynamic stability of the outer shell, and the observable properties of the hot region and the outer shell are discussed.read more
Citations
More filters
Journal ArticleDOI
Large-scale environments of binary AGB stars probed by Herschel: II. Two companions interacting with the wind of π 1 Gruis
A. Mayer,Alain Jorissen,Claudia Paladini,Franz Kerschbaum,Dimitri Pourbaix,C. Siopis,Roland Ottensamer,M. Mecina,Nick L. J. Cox,Martin Groenewegen,D. Klotz,G. Sadowski,A. Spang,Pierre Cruzalèbes,Christoffel Waelkens +14 more
TL;DR: In this article, the authors investigated the environment of the very evolved AGB star π 1 Gruis on large and small scales to identify the triggers of the observed asymmetries.
Journal ArticleDOI
Superbubble breakout and galactic winds from disc galaxies
TL;DR: In this paper, the authors study the conditions for disc galaxies to produce superbubbles that can break out of the disc and produce a galactic wind and argue that the threshold surface density of supernovae rate for seeding a wind depends on the ability of superbubble energetics to compensate for radiative cooling.
Journal ArticleDOI
Stellar population of the superbubble N206 in the LMC II. Parameters of the OB and WR stars, and the total massive star feedback
Varsha Ramachandran,W.-R. Hamann,Rainer Hainich,Lida Oskinova,Tomer Shenar,Andreas Sander,Helge Todt,J. S. Gallagher +7 more
TL;DR: In this article, the Potsdam Wolf-Rayet (PoWR) model was used to analyze the stellar and wind parameters of the massive stars in the Large Magellanic Cloud.
Journal ArticleDOI
The interstellar bubbles of g38.9–0.4 and the impact of stellar feedback on star formation
TL;DR: In this paper, the authors present a study of the star formation region G38.4 using publicly available multiwavelength Galactic plane surveys from ground-and space-based observatories.
Journal ArticleDOI
A Young Giant Molecular Cloud Formed at the Interface of Two Colliding Supershells: Observations Meet Simulations
Joanne Dawson,Joanne Dawson,Evangelia Ntormousi,Yasuo Fukui,Takahiro Hayakawa,Katharina Fierlinger +5 more
TL;DR: In this paper, a giant molecular cloud (GMC) sandwiched between two colliding Milky Way supershells is presented, which shows strong evidence of having formed from material accumulated at the collision zone.