The lives of many stars ends with a spectacular appearance of a planetary nebula. With the help of a telescope “Hubble”, scientists were able to observe the crazy processes that occur in the two young nebulae: NGC 6303 (the Butterfly Nebula) and NGC 7027.
When a star of medium or low mass comes to the final stage of its life, it loses its supply of hydrogen, and the energy to deter foreign words is not enough. This leads to the fact that the star begins to throw out the gas that forms the nebula. New data from the Hubble space telescope, the researchers were able to detect incredibly complex and rapid changes in the jets and the bubbles of gas emitted from stars in the center of both nebulae.
Astronomers say that the Butterfly Nebula and NGC 7027 are some of the most dusty. Since they both are considered to be quite young, both contain an unusually large gas mass. This makes them a very interesting pair of parallel study.
“Nebula NGC 7027 shows an incredible amount of radiations of various wavelengths, each of which emphasizes not only specific chemical element in the nebula, but continuing changes in its structure”, comment the investigators.
These data about waves can help scientists trace the history of the origin of shock waves in the nebula. These stimuli occur in two cases: in the “reset shell” star and stellar winds. They crash into the slowly expanding gas and dust ejected by the star, creating so-called bubbles of the stellar wind.
Also, thanks to new data from the telescope, scientists plan to learn more about what it was before in the center of them. Astronomers suspect that the cores of both objects are or were two stars rotating around each other. Proof of the existence of such a team serve fancy shapes of these nebulae. Each of them has a “waist” symmetric patterns.
