Hence, it is rare that an open cluster survives long enough for one of its members to form a planetary nebula. 因此,一个疏散星团很少能够存活到它内部的某个成员变成行星状星云。 article.yeeyan.org 4. Our own sun will blossom into a planetary nebula when it dies in about five billion years...
The term Planetary Nebula is one type of Nebulae (Not nebulas), which are large clouds of ice and dust that have been created in the aftermath of the death of a star. Although their name includes “planet”, they are nothing to do with planets. They do get their name from the mistaken...
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...
A planetary nebula may be forming.Examines the formation of a planetary nebula revolving around the GL 618 star. Research on the star's radio emission; Belief of theorists on the nebula formation; Evolution of stars.ThomsenDietrichE.EBSCO_AspScience News...
Planetary Nebulae involves a low-mass star entering the final stage of its life. This is called theRed Giantphase, where the star slowly loses its outer layers due to helium flashes from their interior. When the star has lost enough material its temperature increases. In turn, the UV radiati...
la within a cluster A planetary nebula within a clusterA planetary nebula within a clusterNASA
M2-9 is a striking bipolar, or butterfly, planetary nebula (PN) whose nuclear spectrum is uncharacteristic of PN nuclei. Narrow lines ranging in ionization from O I, Fe II, forbidden Fe II, and Si II through forbidden O III are observed in the stellar spectrum. The H-alpha emission line...
High-speed photometry of the central star of the planetary nebula Kohoutek 1-16 shows it to be a low-amplitude pulsating variable. The dominant period is 2... Grauer,A.,D.,... - 《Astrophysical Journal》 被引量: 100发表: 1984年 Spitzer Infrared Spectrograph Observations of Magellanic Cloud...
Planetary Nebulae: ClassificationPlanetary Nebulae: Finding ChartsNo abstract is available for this article.doi:10.1002/asna.19001531907R. G. AitkenJohn Wiley & Sons, LtdAstronomische Nachrichten
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