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104 results for “accretion”
Planetesimal Accretion at Short Orbital Periods
<p>Formation models in which terrestrial bodies grow via the pairwise accretion of planetesimals have been reasonably successful at reproducing the general properties of the solar system, including small body populations. However, planetesimal accretion has not yet been fully explored in the context of the wide variety of recently discovered extrasolar planetary systems, particularly those that host short-period terrestrial planets. In this work, we use direct N-body simulations to explore and understand the growth of planetary embryos from planetesimals in disks extending down to ~1 day orbital periods. We show that planetesimal accretion becomes nearly 100 percent efficient at short orbital periods, leading to embryo masses that are much larger than the classical isolation mass. For rocky bodies, the physical size of the object begins to occupy a significant fraction of its Hill sphere towards the inner edge of the disk. In this regime, most close encounters result in collisions, rather than scattering, and the system does not develop a bimodal population of dynamically hot planetesimals and dynamically cold oligarchs, like is seen in previous studies. The highly efficient accretion seen at short orbital periods implies that systems of tightly-packed inner planets should be almost completely devoid of any residual small bodies. We demonstrate the robustness of our results to assumptions about the initial disk model, and also investigate the effects that our simplified collision model has on the emergence of this non-oligarchic growth mode in a planet forming disk.</p>
Type Ia supernovae from non-accreting progenitors: data, python scripts and mesa inlists
<p>This release contains the inlists and final profiles described in: Antoniadis et al., "Type Ia supernovae from non-accreting progenitors" Mesa v. 10398</p>
IMPETUS: New Cloudy's radiative tables for accretion onto a galaxy black hole. Calculations II. Table 2.
<p>This is a .ZIP file, which contains the results of Calculations II. The main directory contains sub-directories with ascii files. Each column is properly described in the article.</p>
IMPETUS: New Cloudy's radiative tables for accretion onto a galaxy black hole. Calculations I. Table 2.
<p>This is a .ZIP file, which contains the results of Calculations I. The main directory contains sub-directories with ascii files. Each column is properly described in the article.</p>
IMPETUS: New Cloudy's radiative tables for accretion onto a galaxy black hole. Calculations I-VI. Table 2.
<p>These are gzipped/tar files, which contain the results of Calculations I-VI. The main directories contain sub-directories with ascii files. Each column is properly described in the article. The equilibrium temperature for any configuration can be calculated and plot with the new script at https://doi.org/10.5281/zenodo.4381019.</p>
Re-postprocessed POSYDON v1.0 dataset, assuming super-Eddington accretion, compatible with code release v2.0.0-pre1
<p>This dataset includes the downsampled data, as well as the trained classification and interpolation models, from the CO-HMS_RLO and CO-HeMS grids calculated with moderately super-Eddington accretion and conservative mass transfer model, at solar metallicity. This dataset is described in <a href="https://ui.adsabs.harvard.edu/abs/2024arXiv240700200X/abstract">Xing et al. (2024)</a>. The resolution and stellar and binary physics assumptions follow <a href="https://ui.adsabs.harvard.edu/abs/2023ApJS..264...45F/abstract">Fragos et al. 2023</a>, but the dataset is re-postprocessed to be compatible with POSYDON code release <strong>v2.0.0-pre1</strong> (see <a href="https://ui.adsabs.harvard.edu/abs/2024arXiv241102376A/abstract">Andrews et al. 2024</a>). </p> <p>If you use this dataset, please cite the following papers:</p> <p><a href="https://ui.adsabs.harvard.edu/abs/2024arXiv240700200X/abstract">Xing et al. (2024), eprint arXiv:2407.00200</a><br><a href="https://ui.adsabs.harvard.edu/abs/2023ApJS..264...45F/abstract">Fragos et al. (2023), The Astrophysical Journal Supplement Series, Volume 264, Issue 2, id.45, 46 pp.</a><br><a href="https://ui.adsabs.harvard.edu/abs/2024arXiv241102376A/abstract">Andrews et al. (2024), eprint arXiv:2411.02376</a></p>
Data relating to "Millisecond Pulsars from Accretion Induced Collapse as the Origin of the Galactic Centre Gamma-ray Excess Signal"
<p>Data describe the evolution of a population of millisecond pulsars (MSPs) born from Accretion Induced Collapse.</p> <p>Data entries are comma-separated.</p> <p>The formation and subsequent evolution of 9194 MSPs have been modelled with code based on the BSE Code [see Hurley, J. R., Pols, O. R. & Tout, C. A. Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity. Mon. Not. Roy. Astron. Soc. 315, 543–569 (2000)].</p> <p>For each MSP, the first row describes the magnetic field B (in Gauss) and the inclination angle (i, in radians) between magnetic & rotational axes.</p> <p>These quantities (B,i) do not evolve.</p> <p>Thus, every row containing only two entries indicates the beginning of the data covering a separate MSP.<br> For subsequent rows, there are seven entries in each row.</p> <p>The first entry in each row is the (discretised) time in units of Gyr since the star formation event when the MSP is formed. 0.1 is the minimum time possible time for which an MSP can be born. Subsequent discrete time steps are 0.1 Gyr. The last row for every MSP is for a time of 15.9 Gyr. </p> <p>Subsequent entries show (as a function of time)</p> <p>period (in s)</p> <p>period derivative dP/dt (s/s)</p> <p>NS mass (in units of solar masses)</p> <p>secondary mass (in units of solar masses)</p> <p>secondary type (for an explanation of secondary type label see Hurley, J. R., Pols, O. R. & Tout, C. A. Comprehensive analytic formulae for stellar evolution as a function of mass and metallicity. Mon. Not. Roy. Astron. Soc. 315, 543–569 (2000).</p> <p>orbital separation</p>
The Dataset for the Joint geodynamic-geophysical inversion reveals passive subduction and accretion of the Ontong Java Plateau
<p>The Dataset for the Joint geodynamic-geophysical inversion reveals passive subduction and accretion of the Ontong Java Plateau</p>
Database of simulated pulse profiles from X-ray accreting pulsar
<p>This database is a parquet file that stores a list of dictionary with the simulated pulse profiles from an X-ray accreting pulsar. Every dictionary contains 7 paframeters defining the pulsar and the associated pulse profile. It is highly recommended to check the GitHub repository containing instructions on how to read and use the data stored. </p> <p><a href="https://github.com/SimoneGalla/X-ray-accreting-pulsar/tree/main/pulse-Profile-X-ray-pulsars">X-ray-accreting-pulsar/pulse-Profile-X-ray-pulsars at main · SimoneGalla/X-ray-accreting-pulsar (github.com)</a></p>
On the Observability of Individual Population III Stars and Their Stellar-mass Black Hole Accretion Disks through Cluster Caustic Transits
<p>MESA inlists associated with <a href="https://ui.adsabs.harvard.edu/#abs/2018ApJS..234...41W/abstract">On the Observability of Individual Population III Stars and Their Stellar-mass Black Hole Accretion Disks through Cluster Caustic Transits</a></p>
Hydrogen Burning on Accreting White Dwarfs: Stability, Recurrent Novae, and the Post-nova Supersoft Phase
<p>MESA inlists associated with <a href="https://ui.adsabs.harvard.edu/?#abs/2013ApJ...777..136W">Hydrogen Burning on Accreting White Dwarfs: Stability, Recurrent Novae, and the Post-nova Supersoft Phase</a></p>
The outcomes of carbon-oxygen white dwarfs accreting CO-rich material
<p>MESA inlist associated files for <a href="https://ui.adsabs.harvard.edu/#abs/2019MNRAS.483..263W/abstract">The outcomes of carbon-oxygen white dwarfs accreting CO-rich material</a></p>
The Evolution of Gas Giant Entropy During Formation by Runaway Accretion
<p>MESA inlists associated with <a href="https://ui.adsabs.harvard.edu/#abs/2017ApJ...834..149B/abstract">Berardo et al. (2017)</a>. MESA version 7624.</p> <p>Publication DOI: <a href="https://doi.org/10.3847/1538-4357/834/2/149">10.3847/1538-4357/834/2/149</a></p>
Carbon Shell or Core Ignitions in White Dwarfs Accreting from Helium Stars
<p>MESA inlists and run_star_extras associated with <a href="https://ui.adsabs.harvard.edu/?#abs/2016ApJ...821...28B">Brooks et al. (2016)</a>. MESA version 7624.</p> <p>Publication DOI: <a href="https://doi.org/10.3847/0004-637X/821/1/28">10.3847/0004-637X/821/1/28</a></p>
Episodic accretion: the interplay of infall and disc instabilities
<p>MESA inlists and run_star_extras associated with <a href="https://ui.adsabs.harvard.edu/#abs/2018MNRAS.475.2642K/abstract">Kuffmeier et al. (2018)</a>. MESA version 8845.</p> <p>Publication DOI: <a href="https://doi.org/10.1093/mnras/sty024">10.1093/mnras/sty024</a></p>
Accretion-induced Collapse from Helium Star + White Dwarf Binaries
<p>MESA inlists and run_star_extras associated with <a href="https://ui.adsabs.harvard.edu/?#abs/2017ApJ...843..151B">Brooks et al. (2017)</a>. MESA version 7624.</p> <p>Publication DOI: <a href="https://doi.org/10.3847/1538-4357/aa79a6">10.3847/1538-4357/aa79a6</a></p>
Constraints on Bygone Nucleosynthesis of Accreting Neutron Stars
<p>MESA inlists and run_star_extras associated with <a href="https://ui.adsabs.harvard.edu/#abs/2017ApJ...837...73M/abstract">Meisel & Deibel (2017)</a>. MESA version 9575.</p> <p>Publication DOI: <a href="https://doi.org/10.3847/1538-4357/aa618d">10.3847/1538-4357/aa618d</a></p>
Consistent Modeling of GS 1826-24 X-Ray Bursts for Multiple Accretion Rates Demonstrates the Possibility of Constraining rp-process Reaction Rates
<p>MESA inlists and run_star_extras associated with <a href="https://ui.adsabs.harvard.edu/#abs/2018arXiv180505552M/abstract">Meisel (2018)</a>. MESA version 9793.</p> <p>Publication DOI: <a href="https://doi.org/10.3847/1538-4357/aac3d3">10.3847/1538-4357/aac3d3</a></p>
The variable evolution of accretor stars in binary systems due to accretion of increasingly helium-rich material
<p>Dataset for paper "The variable evolution of accretor stars in binary systems due to accretion of increasingly helium-rich material".</p> <p>You will need the <a href="https://github.com/Krytic/Kaitiaki">Kaitiaki code</a>.</p>
Model data repository of "The role of sediment accretion and buoyancy on subduction dynamics and geometry"
<p>This dataset contains the code and data used in Brizzi et al. (2021): The role of sediment accretion and buoyancy on subduction dynamics and geometry</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
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DANDI Archive for NWB datasets
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International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.