Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Körtgen, Bastian"'
Publikováno v:
A&A 687, A276 (2024)
Context. Regularly-spaced, star-forming regions along the spiral arms of nearby galaxies provide insight into the early stages and initial conditions of star formation. The regular separation of these star-forming regions suggests spiral arm instabil
Externí odkaz:
http://arxiv.org/abs/2311.16266
Autor:
Zamponi, Joaquin, Giannetti, Andrea, Bovino, Stefano, Sabatini, Giovanni, Schleicher, Dominik R. G., Körtgen, Bastian, Reissl, Stefan, Wolf, Sebastian
Young massive stars are usually found embedded in dense and massive molecular clumps which are known for being highly obscured and distant. During their formation process, the degree of deuteration can be used as a potential indicator of the very ear
Externí odkaz:
http://arxiv.org/abs/2206.07440
The turbulent dynamics of nearby and extragalactic gas structures can be studied with the column density power spectrum, which is often described by a broken power-law.In an extragalactic context, the breaks in the power spectra have been interpreted
Externí odkaz:
http://arxiv.org/abs/2105.06286
Autor:
Hsu, Chia-Jung, Tan, Jonathan C., Goodson, Matthew D., Caselli, Paola, Körtgen, Bastian, Cheng, Yu
High levels of deuterium fractionation of $\rm N_2H^+$ (i.e., $\rm D_{frac}^{N_2H^+} \gtrsim 0.1$) are often observed in pre-stellar cores (PSCs) and detection of $\rm N_2D^+$ is a promising method to identify elusive massive PSCs. However, the physi
Externí odkaz:
http://arxiv.org/abs/2010.09356
Autor:
Körtgen, Bastian, Soler, Juan D.
Magnetic fields are a dynamically important agent for regulating structure formation in the interstellar medium. The study of the relative orientation between the local magnetic field and gas (column-) density gradient has become a powerful tool to a
Externí odkaz:
http://arxiv.org/abs/2010.01178
Autor:
F., Joaquin Zamponi, Giannetti, Andrea, Bovino, Stefano, Sabatini, Giovanni, Schleicher, Dominik R. G., Körtgen, Bastian, Reissl, Stefan, Wolf, Sebastian
Young massive stars are usually found embedded in dense massive molecular clumps and are known for being highly obscured and distant. During their formation process, deuteration is regarded as a potentially good indicator of the very early formation
Externí odkaz:
http://arxiv.org/abs/2009.00407
Autor:
Körtgen, Bastian
Supersonic turbulence plays a pivotal role during the formation of molecular clouds and stars in galaxies. However, little is known about how the fraction of compressive and solenoidal modes in the velocity field evolves over time and how it depends
Externí odkaz:
http://arxiv.org/abs/2007.02626
Complex turbulent motions of magnetized gas are ubiquitous in the interstellar medium. The source of this turbulence, however, is still poorly understood. Previous work suggests that compression caused by supernova shockwaves, gravity, or cloud colli
Externí odkaz:
http://arxiv.org/abs/1910.13762
Magnetic fields are an elemental part of the interstellar medium in galaxies. However, their impact on gas dynamics and star formation in galaxies remains controversial. We use a suite of global magnetohydrodynamical simulations of isolated disc gala
Externí odkaz:
http://arxiv.org/abs/1909.01623
Autor:
Zamora-Avilés, Manuel, Vázquez-Semadeni, Enrique, González, Ricardo F., Franco, José, Shore, Steven N., Hartmann, Lee W., Ballesteros-Paredes, Javier, Banerjee, Robi, Körtgen, Bastian
We present radiation-magnetohydrodynamic simulations aimed at studying evolutionary properties of H\,{\normalsize II} regions in turbulent, magnetised, and collapsing molecular clouds formed by converging flows in the warm neutral medium. We focus on
Externí odkaz:
http://arxiv.org/abs/1903.01644