Life and Death of a Star – video questions
... 3. Each contracting cloud can produce a few dozen to __________________ of stars. 4. What is the temperature in the middle of a dust disc? __________________ 5. A star’s biggest opponent is ________________ that wants to crush the star. 6. What holds up the star from gravity? ...
... 3. Each contracting cloud can produce a few dozen to __________________ of stars. 4. What is the temperature in the middle of a dust disc? __________________ 5. A star’s biggest opponent is ________________ that wants to crush the star. 6. What holds up the star from gravity? ...
Life cycle of Stars Notes
... • Protostars form in cold, dark nebulae. • Interstellar gas and dust are the raw materials from which stars form. ...
... • Protostars form in cold, dark nebulae. • Interstellar gas and dust are the raw materials from which stars form. ...
Interstellar Medium (ISM) Star Formation Formation of Planetary Systems
... This is just barely shorter than the lifetimes of most massive stars ...
... This is just barely shorter than the lifetimes of most massive stars ...
3A8d
... (d) Estimate the bolometric luminosity of the protogalaxy, averaged over the free-fall time. For this calculation you may assume that the stars of relevance convert 10% of their mass into energy with an efficiency 0.01 mc2 (this includes a contribution from supernovae). Assume a Salpeter IMF and the ...
... (d) Estimate the bolometric luminosity of the protogalaxy, averaged over the free-fall time. For this calculation you may assume that the stars of relevance convert 10% of their mass into energy with an efficiency 0.01 mc2 (this includes a contribution from supernovae). Assume a Salpeter IMF and the ...
Ch 28 Vocab cnp
... A large cloud of gas and dust in space Energy radiated in the form of a wave, resulting from the motion of electric charges and the magnetic fields they produce The final life stage of an extremely massive star, with a gravitational field so intense that not even light can escape A group of stars th ...
... A large cloud of gas and dust in space Energy radiated in the form of a wave, resulting from the motion of electric charges and the magnetic fields they produce The final life stage of an extremely massive star, with a gravitational field so intense that not even light can escape A group of stars th ...
Deep Space and Solar System
... • One light year is how far light travels in one year (based on distance NOT time) • We see all night stars as they were when the light we see left each star ...
... • One light year is how far light travels in one year (based on distance NOT time) • We see all night stars as they were when the light we see left each star ...
There's more than one way to make a Blue Straggler 1
... There's more than one way to make a Blue Straggler The Collision Model ...
... There's more than one way to make a Blue Straggler The Collision Model ...
Gravitational Collapse
... When electrons and protons recombine, they generally emit Balmer lines. ...
... When electrons and protons recombine, they generally emit Balmer lines. ...
Lecture 14
... Cores of shrinking cloud fragments heat up. Collapse only continues if the cloud cools by radiating away heat. If the initial cloud was spinning a protostellar disk is formed. Protostars approach the main sequence from the right hand side of the HR diagram. Jets can be formed as the protostar collap ...
... Cores of shrinking cloud fragments heat up. Collapse only continues if the cloud cools by radiating away heat. If the initial cloud was spinning a protostellar disk is formed. Protostars approach the main sequence from the right hand side of the HR diagram. Jets can be formed as the protostar collap ...
Star Formation - University of Redlands
... • Stars and other interstellar material are in a perpetual battle between forces pulling in (gravity) and forces pushing out (pressure). • Gravity comes from the mass of the cloud or star. • Pressure comes from the motion of the atoms or molecules. – Think of hot air balloons. – The hotter the air, ...
... • Stars and other interstellar material are in a perpetual battle between forces pulling in (gravity) and forces pushing out (pressure). • Gravity comes from the mass of the cloud or star. • Pressure comes from the motion of the atoms or molecules. – Think of hot air balloons. – The hotter the air, ...
The Lives of Stars
... • As stars start to run out of fuel, their outer layers expand, and they become red giants. • The blue-white hot core of a star that is left behind after its outer layers have expanded and drifted out into space is a white ...
... • As stars start to run out of fuel, their outer layers expand, and they become red giants. • The blue-white hot core of a star that is left behind after its outer layers have expanded and drifted out into space is a white ...
Stars and Their Characteristics
... • nebula may condense when an outside force acts upon it • particles move closer together under gravity • increase density = increase temperature • if nebula glows, called protostar • center will become hotter until fusion takes place and a star is born ...
... • nebula may condense when an outside force acts upon it • particles move closer together under gravity • increase density = increase temperature • if nebula glows, called protostar • center will become hotter until fusion takes place and a star is born ...
the life cycle of stars
... ball of gas and dust. • Gravity pulls the materials into a sphere. • As the sphere gets denser, the temperature rises to 10,000,000* C. • Nuclear fusion occurs as hydrogen combines into helium. ...
... ball of gas and dust. • Gravity pulls the materials into a sphere. • As the sphere gets denser, the temperature rises to 10,000,000* C. • Nuclear fusion occurs as hydrogen combines into helium. ...
The Hidden Lives of Galaxies NSTA 2001
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
... • Under collapse, protons and electrons combine to form neutrons. • 10 Km across Black Hole (If mass of core > 5 x Solar) • Not even compacted neutrons can support weight of very massive stars. ...
Star formation
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 to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.