Abstract. Star formation can be triggered by
compression from wind or supernova-driven shock waves that sweep over molecular clouds
.
What most often triggers star formation?
Most likely, star formation follows directly from
the formation of cold dense gas
, whatever the origin of that gas.
What conditions trigger the process of star formation?
Stars form from an accumulation of gas and dust, which
collapses due to gravity
and starts to form stars. The process of star formation takes around a million years from the time the initial gas cloud starts to collapse until the star is created and shines like the Sun.
What are the 7 stages of a star?
- Giant Gas Cloud. A star originates from a large cloud of gas. …
- Protostar. When the gas particles in the molecular cloud run into each other, heat energy is produced. …
- T-Tauri Phase. …
- Main Sequence. …
- Red Giant. …
- The Fusion of Heavier Elements. …
- Supernovae and Planetary Nebulae.
How is a star born step by step?
A star is born when atoms of light elements are
squeezed under enough pressure for their nuclei to undergo fusion
. All stars are the result of a balance of forces: the force of gravity compresses atoms in interstellar gas until the fusion reactions begin.
What stars form the slowest?
What stars form the slowest?
infrared spectrum
.
How long does it take for a star to form?
Then, almost every ion in the gas would need to find an electron to neutralize it before the gas could decouple from the magnetic field and collapse. This would suggest that it takes
more than 10 million years
to form a star.
What is star life cycle?
A star’s life cycle is
determined by its mass
. The larger its mass, the shorter its life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust from which it was born.
What color of star is the hottest?
White stars are hotter than red and yellow.
Blue stars
are the hottest stars of all.
What are the 4 stages of a star?
- STAGE 1: AN INTERSTELLAR CLOUD.
- STAGE 2: A COLLAPSING CLOUD FRAGMENT.
- STAGE 3: FRAGMENTATION CEASES.
- STAGE 4: A PROTOSTAR.
- STAGE 5: PROTOSTELLAR EVOLUTION.
- STAGE 6: A NEWBORN STAR.
- STAGE 7: THE MAIN SEQUENCE AT LAST.
What are the 5 stages of a star?
- A nebula. A star forms from massive clouds of dust and gas in space, also known as a nebula.
- Protostar. As the mass falls together it gets hot.
- Main sequence star.
- Red giant star.
- White dwarf.
- Supernova.
- Neutron star or black hole.
What do you call a star that died?
Some types of stars expire with titanic explosions, called
supernovae
. When a star like the Sun dies, it casts its outer layers into space, leaving its hot, dense core to cool over the eons. … A supernova can shine as brightly as an entire galaxy of billions of “normal” stars.
What is the biggest star?
The cosmos is full of objects that defy expectations. Although it’s difficult to pin down the exact traits of any given star, based on what we know, the largest star is
UY Scuti
, which is some 1,700 times as wide as the Sun.
How a star is created?
Stars form
from an accumulation of gas and dust, which collapses due to gravity and starts to form stars
. The process of star formation takes around a million years from the time the initial gas cloud starts to collapse until the star is created and shines like the Sun. … Without this dust and gas, stars would not form.
What happens to a star before it enters the main sequence?
Before a star reaches the main sequence,
the star is contracting and its core is not yet hot or dense enough to begin nuclear reactions
. So, until it reaches the main sequence, hydrostatic support is provided by the heat generated from the contraction.
What makes a star stop contracting?
Its gravity draws it inward. What makes a star stop contracting? A)…
Its magnetic field
.
