Zobrazeno 1 - 10
of 319
pro vyhledávání: '"Herwig, Falk"'
Autor:
Vassh, Nicole, Wang, Xilu, Lariviere, Maude, Sprouse, Trevor, Mumpower, Matthew R., Surman, Rebecca, Liu, Zhenghai, McLaughlin, Gail C., Denissenkov, Pavel, Herwig, Falk
We demonstrate that the well-known 2.6 MeV gamma-ray emission line from thallium-208 could serve as a real-time indicator of astrophysical heavy element production, with both rapid (r) and intermediate (i) neutron capture processes capable of its syn
Externí odkaz:
http://arxiv.org/abs/2311.10895
A few percent of red giants are enriched in Lithium with $A(\mathrm{Li}) > 1.5$. The evolutionary phase of the Li-rich red giants has remained uncertain because they could be placed both on the red-giant branch (RGB) near the bump luminosity and in t
Externí odkaz:
http://arxiv.org/abs/2309.04634
The inner structure of core-helium burning (CHeB) stars remains uncertain due to the yet unknown nature of mixing at the boundary of their cores. Large convective cores beyond a bare Schwarzschild model are favoured both from theoretical arguments an
Externí odkaz:
http://arxiv.org/abs/2308.10865
Autor:
Mao, Huaqing, Woodward, Paul, Herwig, Falk, Denissenkov, Pavel A., Blouin, Simon, Thompson, William, McDermott, Benjamin
We present 3-D hydrodynamical simulations of core convection with a stably stratified envelope of a \unit{25}{\Msun} star in the early phase of the main-sequence. We use the explicit gas-dynamics code \code{PPMstar} which tracks two fluids and includ
Externí odkaz:
http://arxiv.org/abs/2304.10470
Autor:
Blouin, Simon, Mao, Huaqing, Woods, Tyrone E., Denissenkov, Pavel, Woodward, Paul R., Herwig, Falk
Supermassive stars are Population III stars with masses exceeding $10^4\,M_{\odot}$ that could be the progenitors of the first supermassive black holes. Their interiors are in a regime where radiation pressure dominates the equation of state. In this
Externí odkaz:
http://arxiv.org/abs/2303.10115
Autor:
Blouin, Simon, Mao, Huaqing, Herwig, Falk, Denissenkov, Pavel, Woodward, Paul R., Thompson, William R.
We present the first 3D hydrodynamics simulations of the excitation and propagation of internal gravity waves (IGWs) in the radiative interiors of low-mass stars on the red giant branch (RGB). We use the PPMstar explicit gas dynamics code to simulate
Externí odkaz:
http://arxiv.org/abs/2303.07332
Autor:
Thompson, William, Herwig, Falk, Woodward, Paul R., Mao, Huaqing, Denissenkov, Pavel, Bowman, Dominic M., Blouin, Simon
Recent photometric observations of massive stars have identified a low-frequency power excess which appears as stochastic low-frequency variability in light curve observations. We present the oscillation properties of high resolution hydrodynamic sim
Externí odkaz:
http://arxiv.org/abs/2303.06125
Autor:
Herwig, Falk, Woodward, Paul R., Mao, Huaqing, Thompson, William R., Denissenkov, Pavel, Lau, Josh, Blouin, Simon, Andrassy, Robert, Paul, Adam
We performed 3D hydrodynamic simulations of the inner $\approx 50\%$ radial extent of a $25\ \mathrm{M_\odot}$ star in the early phase of the main sequence and investigate core convection and internal gravity waves in the core-envelope boundary regio
Externí odkaz:
http://arxiv.org/abs/2303.05495
Autor:
Jermyn, Adam S., Bauer, Evan B., Schwab, Josiah, Farmer, R., Ball, Warrick H., Bellinger, Earl P., Dotter, Aaron, Joyce, Meridith, Marchant, Pablo, Mombarg, Joey S. G., Wolf, William M., Wong, Tin Long Sunny, Cinquegrana, Giulia C., Farrell, Eoin, Smolec, R., Thoul, Anne, Cantiello, Matteo, Herwig, Falk, Toloza, Odette, Bildsten, Lars, Townsend, Richard H. D., Timmes, F. X.
We update the capabilities of the open-knowledge software instrument Modules for Experiments in Stellar Astrophysics (MESA). The new auto_diff module implements automatic differentiation in MESA, an enabling capability that alleviates the need for ha
Externí odkaz:
http://arxiv.org/abs/2208.03651
Autor:
Munson, Bradley, Chatzopoulos, Emmanouil, Frank, Juhan, Clayton, Geoffrey C., Crawford, Courtney L., Denissenkov, Pavel A., Herwig, Falk
R Coronae Borealis (RCB) stars are rare hydrogen-deficient carbon-rich variable supergiants thought to be the result of dynamically unstable white dwarf mergers. We attempt to model RCBs through all the relevant timescales by simulating a merger even
Externí odkaz:
http://arxiv.org/abs/2103.01741