What is the T Tauri stage?
It begins life as a protostar still enshrouded in its natal molecular cloud, accreting new material and developing a proto-planetary disc. Slowly, stellar winds and radiation blow away the surrounding shell of gas and dust, and the third stage, when the surrounding envelope has cleared, is called the T-Tauri phase.
Was the sun at Tauri?
The Sun is thought to have gone through the T Tauri stage in its early youth.
How long does the T Tauri stage last?
about 100 million years
Astronomers call this pre-star a T Tauri star. This early stage lasts about 100 million years before nuclear fusion kicks in and it becomes a true star.
What is a T Tauri wind and what does it have to do with the planets?
The T Tauri wind — so named because of the young star currently in this stage—is a phenomenon indicative of the phase of stellar development between the accretion of material from the slowing rotating material of a solar nebula and the ignition of the hydrogen that has agglomerated into the protostar.
What happened to the Sun during the T Tauri stage?
A T Tauri stage for the Solar System would be one means by which the angular momentum of the contracting Sun was transferred to the protoplanetary disc and hence, eventually to the planets.
What are T Tauri stars quizlet?
T Tauri stars are a class of variable stars named after their prototype – T Tauri. They are found near molecular clouds and identified by their optical variability and strong chromospheric lines. T tauri wind.
What is the size of T Tauri?
At the time, T Tauri had been feebly shining at 14th magnitude – at the limit of most telescopes of the time. The condensed nebula appeared to be about 4 arcseconds in size in its longest dimension.
What characteristics would suggest you have found a T Tauri star?
Characteristics. T Tauri stars comprise the youngest visible F, G, K and M spectral type stars (<2 M ☉). Their surface temperatures are similar to those of main-sequence stars of the same mass, but they are significantly more luminous because their radii are larger.
Where does the energy of a T Tauri star come from?
Indeed, for up to another ~100 million years, the emitted radiation will come entirely from the gravitational energy released as the star contracts under its own self- gravity. T Tauri stars therefore represent an intermediate stage between real protostars (e.g. YY Orionis stars) and low-mass main sequence ( hydrogen burning) stars like the Sun.
What occurred during the T-Tauri phase of the development?
During its T-Tauri phase, when the Sun first started shining, it was not very bright. But it was very powerful, nevertheless, and spit out a stream of particles into space. throwdolbeau throwdolbeau Answer: The sun was formed from the stars that have evolved after a definite period of time.
When does the star of T Tauri end?
It ends when a star of 0.5 M☉ or larger develops a radiative zone, or when a smaller star commences nuclear fusion on the main sequence . While T Tauri itself was discovered in 1852, the T Tauri class of stars were initially defined by Alfred Harrison Joy in 1945.
Which is the youngest star in the Tauri constellation?
T Tauri stars comprise the youngest visible F, G, K and M spectral type stars (<2 M☉). Their surface temperatures are similar to those of main-sequence stars of the same mass, but they are significantly more luminous because their radii are larger.