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Showing 41-60 of 1,347 results
  1. Evolution of a Viscous Protoplanetary Disk with Convectively Unstable Regions

    Abstract

    The role of convection in the gas-dust accretion disk around a young star is studied. The evolution of a Keplerian disk is modeled using the...

    Ya. N. Pavlyuchenkov, A. V. Tutukov, ... E. I. Vorobyov in Astronomy Reports
    Article 01 January 2020
  2. Clumpy Accretion As a Possible Cause of Prolonged Eclipses in UX Ori Stars

    Abstract

    We propose a model of deep and prolonged eclipses in young UX Ori stars. Some of these events last for decades and existing models cannot...

    V. P. Grinin, T. V. Demidova in Astronomy Letters
    Article 01 March 2024
  3. A massive Keplerian protostellar disk with flyby-induced spirals in the Central Molecular Zone

    Accretion disks are an essential component in the paradigm of the formation of low-mass stars. Recent observations further identify disks surrounding...

    **ng Lu, Guang-**ng Li, ... Yuxin Lin in Nature Astronomy
    Article 30 May 2022
  4. Features of the Dynamical Evolution of a Massive Disk of Trans-Neptunian Objects

    Abstract

    The dynamical features of a massive disk of distant trans-Neptunian objects are considered in the model of the formation of small bodies in...

    V. V. Emel’yanenko in Solar System Research
    Article Open access 01 July 2021
  5. The Role of Radial Transport in Forming Minor Bodies of the Outer Solar System

    Abstract

    In this paper, we summarize the experimental data on the features of the mineral, chemical, and isotopic compositions of minor bodies of the...

    V. A. Dorofeeva in Solar System Research
    Article 09 June 2022
  6. Direct images and spectroscopy of a giant protoplanet driving spiral arms in MWC 758

    Understanding the driving forces behind spiral arms in protoplanetary disks remains a challenge due to the faintness of young giant planets. MWC 758...

    Kevin Wagner, Jordan Stone, ... John Wisniewski in Nature Astronomy
    Article 06 July 2023
  7. Star-Forming Regions

    Since the 1980s, the Einstein Observatory has shown that the Young Stellar Objects (YSOs) emit X-rays with luminosities, in the 0.3–8 keV bandpass,...
    Living reference work entry 2023
  8. Spectral Energy Distribution for T Tauri Stars with a Debris Disk

    Abstract

    The analysis results of spectral energy distribution (SED) curves in the range 0.36–100 μm for 45 young WTTS-type stars and 9 comparison...

    N. Z. Ismailov, U. S. Valiev in Astronomy Reports
    Article 01 November 2022
  9. Heterogeneous outgassing regions identified on active centaur 29P/Schwassmann–Wachmann 1

    Centaurs are transitional objects between primitive trans-Neptunian objects and Jupiter-family comets. Their compositions and activities provide...

    Sara Faggi, Geronimo L. Villanueva, ... Yanga R. Fernandez in Nature Astronomy
    Article 08 July 2024
  10. A very early origin of isotopically distinct nitrogen in inner Solar System protoplanets

    Understanding the origin of life-essential volatiles such as nitrogen (N) in the Solar System and beyond is critical to evaluate the potential...

    Damanveer S. Grewal, Rajdeep Dasgupta, Bernard Marty in Nature Astronomy
    Article 21 January 2021
  11. The Evolution of Circumstellar Disks: Lessons from the VLT and ISO

    There is strong evidence that the planets in the solar system evolved from a disk-shaped solar nebula...
    Wolfgang Brandner, Dan Potter, ... Hans Zinnecker in The Origin of Stars and Planets: The VLT View
    Conference paper
  12. Formation of intermediate-mass planets via magnetically controlled disk fragmentation

    Intermediate-mass planets, from super-Earth to Neptune-sized bodies, are the most common types of planet in the Galaxy 1 . The prevailing theory of...

    Hong** Deng, Lucio Mayer, Ravit Helled in Nature Astronomy
    Article 11 February 2021
  13. Galaxies with Abnormally High Gas Content in the Disk

    A. V. Zasov, N. A. Zaitseva in Astronomy Reports
    Article 01 September 2022
  14. An inherited complex organic molecule reservoir in a warm planet-hosting disk

    Quantifying the composition of the material in protoplanetary disks is essential to determining the potential for exoplanetary systems to produce and...

    Alice S. Booth, Catherine Walsh, ... Hideko Nomura in Nature Astronomy
    Article 10 May 2021
  15. UV-driven chemistry as a signpost of late-stage planet formation

    The chemical reservoir within protoplanetary disks has a direct impact on planetary compositions and the potential for life. A long-lived carbon- and...

    Jenny K. Calahan, Edwin A. Bergin, ... Ke Zhang in Nature Astronomy
    Article 08 December 2022
  16. The origin of s-process isotope heterogeneity in the solar protoplanetary disk

    Rocky asteroids and planets display nucleosynthetic isotope variations that are attributed to the heterogeneous distribution of stardust from...

    Mattias Ek, Alison C. Hunt, ... Maria Schönbächler in Nature Astronomy
    Article 09 December 2019
  17. Widespread CO2 and CO ices in the trans-Neptunian population revealed by JWST/DiSCo-TNOs

    Carbon dioxide (CO 2 ) is one of the most abundant ices in the Solar System. It has been detected in giant planet atmospheres and on their moons, on...

    Mário N. De Prá, Elsa Hénault, ... Joshua P. Emery in Nature Astronomy
    Article 22 May 2024
  18. Turbulent Radial Mixing in the Solar Nebula as the Source of Crystalline Silicates in Comets

    We present a time-dependent model which investigates the thermal annealing of amorphous silicates in the hot regions of the solar nebula and their...
    Dominique Bockelée-Morvan, Daniel Gautier, ... François Robert in The Origin of Stars and Planets: The VLT View
    Conference paper
  19. The Impact of Black Radiation on the Jeans Gravitational Instability Criterion in a Circumstellar Plasma Disk in View of Nonisentropic Effects

    Abstract

    Within the problem of modeling the evolution of circumstellar gas-and-dust clouds, the impact is discussed of black radiation on the Jeans...

    A. V. Kolesnichenko in Solar System Research
    Article 14 December 2022
  20. Planetesimal rings as the cause of the Solar System’s planetary architecture

    Astronomical observations reveal that protoplanetary disks around young stars commonly have ring- and gap-like structures in their dust...

    Andre Izidoro, Rajdeep Dasgupta, ... Andrea Isella in Nature Astronomy
    Article 30 December 2021
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