Star formation is a complex process, beginning from cold clouds of gas and dust and ending with the diverse population of stars we observe in our galaxy and beyond. Studying that process requires many different types of astronomical observations to capture the composition, dynamics, and other properties of star-forming regions.

The dust and gas ultimately coalesce to form planets that settle into orbits around their star—creating what we know as a planetary system. Understanding how these early systems go from disk to planets is essential to understanding our own origin and the true scope of …

A stellar evolutionary model is a mathematical model that can be used to compute the evolutionary phases of a star from its formation until it becomes a remnant. The mass and chemical composition of the star are used as the inputs, and the luminosity and surface temperature are the only constraints.

Star formation is a complex process, beginning from cold clouds of gas and dust and ending with the diverse population of stars we observe in our galaxy and beyond. Studying that process requires many different types of astronomical observations to capture the composition, dynamics, and other properties of star-forming regions.

When the stars used up their nuclear fuel, they started to evolve. The evolutionary processes of stars depend upon their initial mass. Mid-sized stars eject planetary nebulae, leaving a white dwarf core remnant. More massive stars explode as supernovae, leaving neutron stars or black holes at the centers of the supernovae remnants.

2024年10月29日 · Jupiter and Saturn are thought to have formed first and quickly within the first 10 million years of the solar system. In the warmer parts of the disk, closer to the star, rocky planets begin to form. After the icy giants form there’s …

Many of stars’ properties — how long they live, what color they appear, how they die — are largely determined by how massive they are. The study of stellar structure and evolution is dedicated to understanding how stars change over their lifetimes, including the processes that shape them on the inside.

Using dynamical and chemical models and multi-wavelength, ground-based, and space-based observations, STScI researchers have characterized the evolution of the physical and chemical properties of star and planet formation environments in single and multi-stellar systems.

Eric Feigelson studies the star formation environment, including irradiation of planet forming disks by X-rays, to understand implications for early stages of planet formation. Eric Ford studies the late-stage evolution of planetary systems, including the interaction between protoplanets and the disk of planetessimals, planet-planet ...

• Planet formation occurs in circumstellar disks orbiting around young stars. • The first 10Myrs evolution are crucial for: Disk evolution, planet formation, environmental effects. • Disk evolution and planet formation can be externally affected by close stellar encounters and externally induced photoevaporation.