PH709-assn-answers
... Planetesimals form as dust/grains separate/diffuse from the gas, forming a denser dust disc near the mid-plane. Inelastic ollisions between grains are more common in this disc and sticking/coalescence occurs. Turbulence stirs up the gas increasing the collision rate OR Gravity becomes more important ...
... Planetesimals form as dust/grains separate/diffuse from the gas, forming a denser dust disc near the mid-plane. Inelastic ollisions between grains are more common in this disc and sticking/coalescence occurs. Turbulence stirs up the gas increasing the collision rate OR Gravity becomes more important ...
presentation source
... “[Owing to nuclear physicists good proposal of a ‘big bang’ origin of the Universe some 3 million years ago…] We are indeed forced to conclude that the present variety of stars in the sky is the result of the original method of star formation rather than of any evolutionary process.” --Lyman Sptitze ...
... “[Owing to nuclear physicists good proposal of a ‘big bang’ origin of the Universe some 3 million years ago…] We are indeed forced to conclude that the present variety of stars in the sky is the result of the original method of star formation rather than of any evolutionary process.” --Lyman Sptitze ...
Astro 27 Solar System Formation and ExoPlanets Slide Show
... “Slow” Core Accretion goes faster when gravity gets strong enough, but… • Once the core grows past ~0.5-1 mile across, gravity becomes significant and accelerates the process. • Growth rate goes as radius to the 4th power (for constant density). • So, those cores which get to the self-gravity point ...
... “Slow” Core Accretion goes faster when gravity gets strong enough, but… • Once the core grows past ~0.5-1 mile across, gravity becomes significant and accelerates the process. • Growth rate goes as radius to the 4th power (for constant density). • So, those cores which get to the self-gravity point ...
I Cloudy with a Chance of Making a star is no easy thing
... Consequently, those of us who seek to observe star formation face a fundamental problem: stars cloak their own birth. The material that goes into creating a star is thick and dark; it needs to become dense enough to initiate nuclear fusion but has not done so yet. Astronomers can see how this proces ...
... Consequently, those of us who seek to observe star formation face a fundamental problem: stars cloak their own birth. The material that goes into creating a star is thick and dark; it needs to become dense enough to initiate nuclear fusion but has not done so yet. Astronomers can see how this proces ...
Forming disk galaxies in magneto-hydro
... SuperMUC has played a decisive role in making the present simulations possible. Within our project, we are currently working on substantially scaling up the numerical resolution and dynamic range achieved in our simulations of the formation of Milky Way-sized galaxies, thereby allowing a treatment o ...
... SuperMUC has played a decisive role in making the present simulations possible. Within our project, we are currently working on substantially scaling up the numerical resolution and dynamic range achieved in our simulations of the formation of Milky Way-sized galaxies, thereby allowing a treatment o ...
Birth and Life of a Star
... Many white dwarfs are about the same size as the Earth, and about 100 times smaller than the Sun. They may weigh the same as the sun, which would make them very dense. The heavier the white dwarf is, then the smaller its size will be. A star like our Sun will become a white dwarf when it has run out ...
... Many white dwarfs are about the same size as the Earth, and about 100 times smaller than the Sun. They may weigh the same as the sun, which would make them very dense. The heavier the white dwarf is, then the smaller its size will be. A star like our Sun will become a white dwarf when it has run out ...
November 2013 - Pomona Valley Amateur Astronomers
... a concept is consistent with all observations it can be considered reasonable. If it can hold up under intense scrutiny and many attempts to falsify it, it may be considered reliable. The concept presented here is just beginning to be scrutinized. As of now, consider it speculation but generally acc ...
... a concept is consistent with all observations it can be considered reasonable. If it can hold up under intense scrutiny and many attempts to falsify it, it may be considered reliable. The concept presented here is just beginning to be scrutinized. As of now, consider it speculation but generally acc ...
Birth and Life of a Star
... Many white dwarfs are about the same size as the Earth, and about 100 times smaller than the Sun. They may weigh the same as the sun, which would make them very dense. The heavier the white dwarf is, then the smaller its size will be. A star like our Sun will become a white dwarf when it has run out ...
... Many white dwarfs are about the same size as the Earth, and about 100 times smaller than the Sun. They may weigh the same as the sun, which would make them very dense. The heavier the white dwarf is, then the smaller its size will be. A star like our Sun will become a white dwarf when it has run out ...
Methods for the detection of exoplanets
... Definition: region around a star where the temperature on the surface of an eventual planet or moon can afford the ...
... Definition: region around a star where the temperature on the surface of an eventual planet or moon can afford the ...
IOSR Journal of Applied Physics (IOSR-JAP) ISSN: 2278-4861.
... material was drawn towards the centre of the nebula. This made gravity stronger, making condensation faster. This theory was justified by a well know experiment in which astronomers used a transparent glass tube of water with dissolved salt crystals (mingled in spaces). It was observed that salt cry ...
... material was drawn towards the centre of the nebula. This made gravity stronger, making condensation faster. This theory was justified by a well know experiment in which astronomers used a transparent glass tube of water with dissolved salt crystals (mingled in spaces). It was observed that salt cry ...
Today`s Powerpoint
... and computer simulations show this situation can be maintained for a long time. ...
... and computer simulations show this situation can be maintained for a long time. ...
Planets Beyond the Solar System
... mph), mostly due to Jupiter. • The size of this path is about 0.001 arcsec (less than a millionth of a degree) as seen from 10 parsecs (33 light years) away. ...
... mph), mostly due to Jupiter. • The size of this path is about 0.001 arcsec (less than a millionth of a degree) as seen from 10 parsecs (33 light years) away. ...
eneb_form
... star has a huge volume. That means the atoms are not close to each other near the surface. They have virtually no effect on the given energy levels. • In a giant star (luminosity class III) the star has a large radius but not as large as the supergiant. The atoms near the surface interact more with ...
... star has a huge volume. That means the atoms are not close to each other near the surface. They have virtually no effect on the given energy levels. • In a giant star (luminosity class III) the star has a large radius but not as large as the supergiant. The atoms near the surface interact more with ...