Rotation and Disks

Rotation and Disks - Rotation and Disks. As the core...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Rotation and Disks. As the core collapses the molecular cloud begins to rotate. The rotation of the cloud is caused by the rotation of the core. As the core spins it generates angular momentum this angular momentum is transferred to the cloud because angular momentum must be conserved (Law of Conservation of Angular Momentum). At the equatorial plane of the core the inertia generated by rotation partially counteracts the pull of gravity and limits the amount of gas being pulled into the protostar. (fig 18.7 pg. 426) Matter does fall inward at the rotational poles, as more dust falls into the protostar the mass of the core increases which increases temperature and angular momentum. By this time all dust surrounding the star has vaporized allowing the star to be visible. Gas becomes opaque. Energy cannot escape directly, thermal pressure decreases. Outer layer’s contract. Luminosity decreases. As the temperature continues to increase, the protostar moves to the
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/15/2011 for the course AST AST1002 taught by Professor Emilyhoward during the Fall '10 term at Broward College.

Page1 / 2

Rotation and Disks - Rotation and Disks. As the core...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online