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Evolution of a Viscous Protoplanetary Disk with Convectively Unstable Regions
AbstractThe 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...
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Clumpy Accretion As a Possible Cause of Prolonged Eclipses in UX Ori Stars
AbstractWe propose a model of deep and prolonged eclipses in young UX Ori stars. Some of these events last for decades and existing models cannot...
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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...
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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...
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The Role of Radial Transport in Forming Minor Bodies of the Outer Solar System
AbstractIn this paper, we summarize the experimental data on the features of the mineral, chemical, and isotopic compositions of minor bodies of the...
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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...
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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,... -
Spectral Energy Distribution for T Tauri Stars with a Debris Disk
AbstractThe analysis results of spectral energy distribution (SED) curves in the range 0.36–100 μm for 45 young WTTS-type stars and 9 comparison...
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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...
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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...
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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... -
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... -
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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...
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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...
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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...
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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...
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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... -
The Impact of Black Radiation on the Jeans Gravitational Instability Criterion in a Circumstellar Plasma Disk in View of Nonisentropic Effects
AbstractWithin the problem of modeling the evolution of circumstellar gas-and-dust clouds, the impact is discussed of black radiation on the Jeans...
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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...