More detailed explanation of star formatio1

More detailed explanation of star formatio1 - More detailed...

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

View Full Document Right Arrow Icon
More detailed explanation of star formation Molecular Clouds – relatively dense concentrations of inter-stellar gas and dust, stars are formed in these clouds. The term molecular is used because these “cool” clouds contain molecules rather than atoms or ions. Until recently the formation of stars in these clouds were hidden behind large quantities of “dust”. Infrared and radio observations let us look through the dust to see what is behind. (CO and NH 3 ) Giant Molecular Clouds – 10 pc across and 1 million of dust and gas. There are thousands of these large molecular clouds. The nearest is the Orion Molecular Cloud which is about 450 pc away in the direction of the constellation Orion. (fig. 18.2 and 18.3 pg. 423) These clouds contain smaller, denser clumps of interstellar medium. At the center of these clumps are Cloud Cores, this is the location in the cloud where star formation takes place. Cold cores are about 10K and 0.1 pc across and Warm cores are 30 to 100K, about 3pc across
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

More detailed explanation of star formatio1 - More detailed...

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