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46 results for “stars: evolution”
The Effect of Donor Star Rejuvenation on Common Envelope Evolution
<p>The effect of donor star rejuvenation on common envelope evolution</p> <p>Animation of the simulations presented in <a href="https://arxiv.org/abs/2407.15932">https://arxiv.org/abs/2407.15932</a></p>
The input files and associated data products for "Modeling High Mass X-ray Binaries to Double Neutron Stars through Common Envelope Evolution"
<p>Simulations were made using the version 12115 of the MESA code together with the x86_64-linux-20190830 MESA SDK. "template.zip" provides the MESA inlist files to reproduce our simulations. "CE_1.zip" provides our simulated results for a grid of binary systems with common envelope ejection efficiencies set to be 1.0. Different folders indicate the binary systems with different initial parameters. Inside each folder information can be found for binary properties in the "history.data" file. Each folder also contains the "result.txt" file with the terminal output of the simulation. "CE_3.zip", "CE_0.3.zip" and "CE_0.1.zip" are the same as "CE_1.zip" but with common envelope ejection efficiencies set to be 3.0, 0.3 and 0.1, respectively.</p>
The key role of the host star's rotational history on the evolution of the planetary system - The case of TOI-849 and Kepler-444
<p>The interaction between the host star and planets has a significant</p> <p>role in shaping the evolution of the planetary system. The dissipation of</p> <p>tides and the consequent exchange of angular momentum between star and</p> <p>planets may significantly impact their orbits and modify the architecture of</p> <p>the system. The emission of high-energy stellar radiation is directly linked</p> <p>to the stellar rotation rate and its role in determining the efficiency of</p> <p>planetary atmospheric evaporation represents a key process suitable to</p> <p>explain some peculiar features observed in the population of detected</p> <p>exoplanets. In this context, the rotational history of the host star plays a</p> <p>key role. In our work, we aim at having an as detailed as possible</p> <p>characterisation of the host star of the system provided by thorough</p> <p>asteroseismic modelling (when available). Rotating models of the host star</p> <p>are then computed by accounting for a comprehensive treatment of angular</p> <p>momentum transport by hydrodynamic and magnetic instabilities. We explore a</p> <p>range of initial surface rotation rates representative of slow, medium and</p> <p>fast rotators, accounting for the degeneracy on the stellar rotational</p> <p>history. We finally study the interaction between star and planet, by</p> <p>coupling the host star model to our orbital evolution code, simultaneously</p> <p>following the impact of tides and atmospheric evaporation. We present recent</p> <p>results found in the context of the TOI-849 and Kepler-444 systems.</p>
Developmental dynamics of sea urchin and sea star cis-regulation and the evolution of echinoderm genome organization
GEO Series GSE186363. Strongylocentrotus purpuratus. 2 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
Effects of close binary evolution on the main-sequence morphology of young star clusters
<p>Star cluster animation to show their evolution in the Hertzsprung-Russell diagram.</p>
Developmental dynamics of sea urchin and sea star cis-regulation and the evolution of echinoderm genome organization - ATAC-seq
GEO Series GSE280529. Strongylocentrotus purpuratus; Patiria miniata. 14 samples. Type: Genome binding/occupancy profiling by high throughput sequencing.
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