ON and OFF SOL AWAKE
yellow star near the center of this vision of heaven is T Tauri, the prototype of variable star T Tauri. Very near a dusty cosmic cloud yellow historically known as Hind's Variable Nebula (NGC 1555). Size of 400 light years, a molecular cloud, as both star and nebula vary significantly in brightness, but not necessarily at the same time adding to the region fascinating mystery. T Tauri stars are generally recognized as young (less than a few million years ago), stars as the sun still in early stages of formation. To further complicate the picture, the infrared observations indicate that T Tauri is part of a multiple system and suggest that the nebula associated Hind may also contain a very young stellar object.
If the Sun was a 40-year-old T Tauri would be a baby 3 days old.
Hind Nebula (NGC 1555), is a reflection nebula that is illuminated by its neighbor variable.T TTauri Tauri is only about a million years. As a result, the brightness of the nebula varies with the change of illumination given by the star itself. The nebula is observed between 1852 and 1861, but then began to disappear from view.
The nebula is observed between 1852 and 1861, but then began to disappear from view. Only faint traces of the nebula were visible with the largest telescopes of the time until the mid 1860's, and in 1868 completely disappeared from the telescopic sight. The nebula was not seen again until 1890, when it was noted by EE Barnard and SW Burnham. Faded again, but only traces were photographically in 1899. In 1920, the ghost nebula began to light up again gradually. The nebula has been improved since the 1930's, but it remains a challenge to see it.
Then in 1890, almost 40 years after the discovery of T Tauri, Wesley Shelburn Burnham was found that T Tauri is within a very small nebula.
T Tauri stars are pre-main sequence stars and just leave the opaque envelope of star formation.
clouds also contain small amounts of lithium which is usually destroyed when the star evolves on the main sequence stage of life. Therefore, lithium is often an indicator of stellar youth.
The nebula is formed by OII, SII and H.
A show about what we have in the full moon, with cloudy skies in motion, even though no red sulfur.
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