logging in or signing up Life Cycles of Stars Richie Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1190 Category: News & Reports.. License: All Rights Reserved Like it (0) Dislike it (1) Added: August 09, 2007 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: venktwaran (12 month(s) ago) fsa Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Life Cycles of Stars: Life Cycles of Stars The Hertzsprung-Russell Diagram: The Hertzsprung-Russell Diagram How Stars Form: How Stars Form Collapsing gas and dust cloud Protostar - mostly infrared Main Sequence Stars: Main Sequence Stars Brown Dwarf Red Dwarf Normal Star All Objects Exist Because of a Balance Between Gravity and Some Other Force: All Objects Exist Because of a Balance Between Gravity and Some Other Force People, Planets-Interatomic Forces Normal Stars-Radiation White Dwarfs-Electron Repulsion Neutron Stars-Nuclear Forces Black Holes-No Known Force How Stars Die: How Stars Die Main Sequence Stars Brighten With Age The More Massive a Star, the Faster it Uses Fuel Giant Phase White Dwarf Supernova Neutron Star - Pulsar Black Hole Historical Supernovae: Historical Supernovae 1006 - Chinese 1054 - Chinese, European, Anasazi? 1572 - Tycho’s Star 1604 - Kepler’s Star 1987 - Small Magellanic Cloud (170,000 l.y.) Life (Briefly!) Near a Supernova: Life (Briefly!) Near a Supernova Sun’s Energy Output = 77 billion megatons/second Let’s relate that to human scales. What would that be at one kilometer distance? 77 x 1015 tons/(150 x 106km)2 = 3 tons Picture a truckload of explosives a km away giving off a one-second burst of heat and light to rival the Sun Now Assume the Sun Goes Supernova: Now Assume the Sun Goes Supernova Brightens by 100 billion times Our 3 tons of explosive becomes 300,000 megatons Equivalent to entire Earth’s nuclear arsenal going off one km away - every second This energy output would last for days Planetary Systems: Planetary Systems Protoplanetary Disks Accretion of Planets Expulsion and Migration of Planets About 30 extrasolar planets known Our Solar System may be unusual? Protoplanetary Disks in Orion: Protoplanetary Disks in Orion You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
Life Cycles of Stars Richie Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1190 Category: News & Reports.. License: All Rights Reserved Like it (0) Dislike it (1) Added: August 09, 2007 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... By: venktwaran (12 month(s) ago) fsa Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript Life Cycles of Stars: Life Cycles of Stars The Hertzsprung-Russell Diagram: The Hertzsprung-Russell Diagram How Stars Form: How Stars Form Collapsing gas and dust cloud Protostar - mostly infrared Main Sequence Stars: Main Sequence Stars Brown Dwarf Red Dwarf Normal Star All Objects Exist Because of a Balance Between Gravity and Some Other Force: All Objects Exist Because of a Balance Between Gravity and Some Other Force People, Planets-Interatomic Forces Normal Stars-Radiation White Dwarfs-Electron Repulsion Neutron Stars-Nuclear Forces Black Holes-No Known Force How Stars Die: How Stars Die Main Sequence Stars Brighten With Age The More Massive a Star, the Faster it Uses Fuel Giant Phase White Dwarf Supernova Neutron Star - Pulsar Black Hole Historical Supernovae: Historical Supernovae 1006 - Chinese 1054 - Chinese, European, Anasazi? 1572 - Tycho’s Star 1604 - Kepler’s Star 1987 - Small Magellanic Cloud (170,000 l.y.) Life (Briefly!) Near a Supernova: Life (Briefly!) Near a Supernova Sun’s Energy Output = 77 billion megatons/second Let’s relate that to human scales. What would that be at one kilometer distance? 77 x 1015 tons/(150 x 106km)2 = 3 tons Picture a truckload of explosives a km away giving off a one-second burst of heat and light to rival the Sun Now Assume the Sun Goes Supernova: Now Assume the Sun Goes Supernova Brightens by 100 billion times Our 3 tons of explosive becomes 300,000 megatons Equivalent to entire Earth’s nuclear arsenal going off one km away - every second This energy output would last for days Planetary Systems: Planetary Systems Protoplanetary Disks Accretion of Planets Expulsion and Migration of Planets About 30 extrasolar planets known Our Solar System may be unusual? Protoplanetary Disks in Orion: Protoplanetary Disks in Orion