A planetary nebula is a phenomenon that occurs when a small to medium-sized star approaches the end of its life cycle. While very large stars end their lives in an explosion of light called asupernova, smaller stars fade out more gradually as gases and radiation exit their core. The first...
The type of star that creates a planetary nebula is a low-to-medium-mass star, like our sun, that is destined to turn into a red giant and then a white dwarf as it completes its life cycle. Despite the name, a planetary nebula has nothing to do with planets. It was given that ...
Forms and Structure of the Planetary Nebula Life of Planetary Nebulae Facts About Planetary Nebula Lesson Summary Frequently Asked Questions What is the temperature of the planetary nebula? The temperature of the gas surrounding a planetary nebula is about 10,000 degrees Celsius. The temperature of...
The nuclear reactions in their cores create carbon, nitrogen and oxygen, which are transported by convection to the Outer envelope of the stellar atmosphere. As the star finally collapses to become a white dwarf, this envelope is expelled from the star to form a planetary nebula (PN) rich in...
Solar Nebula Chondrite Protoplanets Meteoroids Extrasolar Gas Giants Melting Point View all Topics Recommended publications Icarus Journal Planetary and Space Science Journal Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment Journal Ad...
A possible explanation is that the xenon composition of the nebula changed over the lifetime of the disk due to changes in material supplied from the surrounding molecular cloud (Pepin et al., 1995; Pepin, 2003). An important parameter of this problem is the xenon-isotope composition of the...
1. Earth Systems Earth as a Planetary System Structure of Earth Plate Tectonics Is the Earth ...
As the star finally collapses to become a white dwarf, this envelope is expelled from the star to form a planetary nebula (PN) rich in organic molecules. The physics, dynamics, and chemistry of these nebulae are poorly understood and have implications not only for our understanding of the ...
This object is very probably a bipolar nebula in a very early stage. Combining these SPHERE observation with ALMA ones [23,24] enabled to show that the disc was in keplerian rotation. The central star had an initial mass of ∼1 M and the companion could be a massive planet. The ...
This object is very probably a bipolar nebula in a very early stage. Combining these SPHERE observation with ALMA ones [23,24] enabled to show that the disc was in keplerian rotation. The central star had an initial mass of ∼1 M⊙⊙ and the companion could be a massive planet. The...