What happens when an interstellar cloud fragment shrinks? It first becomes opaque; Density rises; Temperature rises; Pressure rises.
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What happens when interstellar clouds shrink?
As the cloud shrinks, its gravitational potential energy is converted to the kinetic energy of individual gas particles falling inward. These particles crash into one another, converting their kinetic energy into thermal energy.
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What happens when an interstellar cloud fragment collapses?
The traditional view of fragmentation is that this collapse generates substructure. As the cloud contracts, it breaks apart, producing several daughter clouds. Each daughter, in turn, collapses and breaks up. After a number of generations, fragments with stellar-type mass are produced – the observed dense cores.
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What does a collapsing cloud fragment too small to form a star become?
A cloud fragment too small to form a star becomes: a brown dwarf. its luminosity decreases, while its temperature increases.
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Does mass increase when an interstellar cloud fragment collapses?
During the collapse phase of an individual clump, a few additional effects occur. First, the clump in the cloud will attract nearby gas particles, causing the clump to grow more massive.
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What causes an interstellar cloud to collapse?
Intergalactic space is filled with clouds of gas (mostly H + He) and dust known as molecular clouds. These clouds are supported against gravitational collapse by their thermal pressure, but if the clouds get too big massive, gravity wins and they can start to collapse. This is the first step towards star formation.
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What prevents an interstellar cloud from just collapsing?
Heat pressure: If interstellar gas is warm enough, this pressure will prevent gravity from causing fragmentation and collapse.
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When an interstellar cloud fragment shrinks in size its temperature increases?
What happens when an interstellar cloud fragment shrinks? It first becomes opaque; Density rises; Temperature rises; Pressure rises.
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What happens when an interstellar cloud fragment shrinks?
HEATING: The temperature of the solar nebula increases as it collapses. As the cloud shrinks, its gravitational potential energy is converted to the kinetic energy of individual gas particles falling inward. These particles crash into one another, converting their kinetic energy into thermal energy.
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What happens as a cloud fragment evolves into a protostar?
As the cloud collapses, it begins to spin and by the time a protostar is formed, the cloud flattens and there is a protostellar disk spinning around the protostar. These disks probably slow the rotation of the protostar, and sometimes coalesce into planetary systems.
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What are sites within a collapsing cloud where stars are being formed called?
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as “stellar nurseries” or “star-forming regions”, collapse and form stars.
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What causes a collapsing cloud fragment to flatten into a disk?
Centrifugal force causes the outer part of a collapsing interstellar cloud to flatten into a disk, where planets are formed. Source: The Birth of Stars, by NASA.
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What happens to an interstellar cloud as it collapses?
As the cloud shrinks, its gravitational potential energy is converted to the kinetic energy of individual gas particles falling inward. These particles crash into one another, converting their kinetic energy into thermal energy.
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Does mass increase when an interstellar cloud fragment collapses?
What happens when an interstellar cloud fragment contracts? Its pressure increases.
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What happens when an interstellar cloud fragment contracts?
Stars are formed when enormous clouds of gas (light-years1 in diameter) collapse under their own gravity. Interstellar “clouds” would make a very, very good vacuum on Earth; but the space around them would make an even better vacuum, so clouds they are.
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What happens when an interstellar cloud fragment collapses?
The traditional view of fragmentation is that this collapse generates substructure. As the cloud contracts, it breaks apart, producing several daughter clouds. Each daughter, in turn, collapses and breaks up. After a number of generations, fragments with stellar-type mass are produced – the observed dense cores.
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What happens when a molecular cloud collapses?
So deep inside molecular clouds (the molecular clouds themselves may be 106 – 107 Msun), the cores are collapsing to form stars.
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What happens when a nebula cloud collapses?
Eventually, the clump of dust and gas gets so big that it collapses from its own gravity. The collapse causes the material at the center of the cloud to heat up-and this hot core is the beginning of a star.
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What forces are responsible for the collapse of an interstellar cloud?
Centrifugal force causes the outer part of a collapsing interstellar cloud to flatten into a disk, where planets are formed. Source: The Birth of Stars, by NASA.
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