Solar System and Astronomy puzzle 001
... a star system consisting of two stars orbiting around their common center of mass 10. natural satellite 12. a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust 13. growth of a massive object by gravitationally attracting more matter ...
... a star system consisting of two stars orbiting around their common center of mass 10. natural satellite 12. a massive, gravitationally bound system consisting of stars, stellar remnants, an interstellar medium of gas and dust 13. growth of a massive object by gravitationally attracting more matter ...
Stellar Evolution - FSU High Energy Physics
... • Hot remnant core is a white dwarf • No more support from burning fuel. • Thermal motion of the ions will become less important and eventually degenerate electron pressure opposes gravitational collapse. ...
... • Hot remnant core is a white dwarf • No more support from burning fuel. • Thermal motion of the ions will become less important and eventually degenerate electron pressure opposes gravitational collapse. ...
Life2
... Quantum fluctuations in early universe produced “framework” of galaxy formation. Attracted gas and dark matter that coalesced to form first galaxies at only 500 million years. Formed in “cosmic web”. ...
... Quantum fluctuations in early universe produced “framework” of galaxy formation. Attracted gas and dark matter that coalesced to form first galaxies at only 500 million years. Formed in “cosmic web”. ...
The “Big Bang” Theory
... • Matter started to “_______” back together • This was due to __________ • The ________, _______ and __________ formed from these clumps of dust and gas • There are __________ of galaxies in the universe and each galaxy consists of __________ of stars ...
... • Matter started to “_______” back together • This was due to __________ • The ________, _______ and __________ formed from these clumps of dust and gas • There are __________ of galaxies in the universe and each galaxy consists of __________ of stars ...
Fulltext PDF
... within the galaxy, however, atoms of gas congregate into great clouds or nebulae. In these gas clouds, the density may be as high as 105 atoms/cm3. This density is still, however, far less than the density of the air at the surface of the eartQ;(109 atoms!cm 3). ...
... within the galaxy, however, atoms of gas congregate into great clouds or nebulae. In these gas clouds, the density may be as high as 105 atoms/cm3. This density is still, however, far less than the density of the air at the surface of the eartQ;(109 atoms!cm 3). ...
Where Stars Are Born
... 1. What is the composition of interstellar gas? Of interstellar dust? 2. If space is a near-perfect vacuum, how can there be enough dust in it to block light? 3. What is an emission nebula? 4. How is interstellar dust detected? 5. Why is dust found in the neighborhood of some stars (as in the Pleiad ...
... 1. What is the composition of interstellar gas? Of interstellar dust? 2. If space is a near-perfect vacuum, how can there be enough dust in it to block light? 3. What is an emission nebula? 4. How is interstellar dust detected? 5. Why is dust found in the neighborhood of some stars (as in the Pleiad ...
HW #8 Answers (Due 10/21)
... lower mass stars in between the spiral arms, but not O-stars. Explain why this is. This is because O stars use their fuel very rapidly, in order to hold the star up against the inward force of gravity. Their lifetimes can be on the order of 1-10 million years. Since is takes a few hundred million ye ...
... lower mass stars in between the spiral arms, but not O-stars. Explain why this is. This is because O stars use their fuel very rapidly, in order to hold the star up against the inward force of gravity. Their lifetimes can be on the order of 1-10 million years. Since is takes a few hundred million ye ...
Day_27
... Some regions can be very hot (106 K). X-rays emitted, but extremely tenuous. The Sun resides in a local bubble of milliondegree gas. Most intercloud gas is 8000 K. ...
... Some regions can be very hot (106 K). X-rays emitted, but extremely tenuous. The Sun resides in a local bubble of milliondegree gas. Most intercloud gas is 8000 K. ...
Stars - Red, Blue, Old, New pt.2
... Spitzer Space Telescope • Looks at the infrared with cameras and spectrographs. • Infrared radiation is “heat: can see through the dust much better than in optical ...
... Spitzer Space Telescope • Looks at the infrared with cameras and spectrographs. • Infrared radiation is “heat: can see through the dust much better than in optical ...
wk09noQ
... the gas increase → more blackbody radiation • Opacity — the gas is not transparent to the radiation, and the radiation interacts with the gas particles exerting an outward pressure known as radiation pressure • The intense radiation from hot, young stars ionizes the gaseous interstellar medium surro ...
... the gas increase → more blackbody radiation • Opacity — the gas is not transparent to the radiation, and the radiation interacts with the gas particles exerting an outward pressure known as radiation pressure • The intense radiation from hot, young stars ionizes the gaseous interstellar medium surro ...
Scales of the Universe
... • A cloud of hydrogen gas began to gravitationally collapse. • As more gas fell in, it’s potential energy was converted into thermal energy. • Eventually the in-falling gas was hot enough to ignite nuclear fusion in the core. • Gas that continued to fall in helped to establish gravitational equilibr ...
... • A cloud of hydrogen gas began to gravitationally collapse. • As more gas fell in, it’s potential energy was converted into thermal energy. • Eventually the in-falling gas was hot enough to ignite nuclear fusion in the core. • Gas that continued to fall in helped to establish gravitational equilibr ...
Great Migrations & other natural history tales
... way M_Jeans changes w.r.t. the fragment mass, Hoyle (1953) arrived at a concept of opacity-limited fragmentation. When heat gets trapped by opacity, Jeans mass ...
... way M_Jeans changes w.r.t. the fragment mass, Hoyle (1953) arrived at a concept of opacity-limited fragmentation. When heat gets trapped by opacity, Jeans mass ...
Chapter 27 Stars and Galaxies
... They will have one or more large explosions and become a nova A supernova is a star that has such a tremendous explosion that it blows itself apart. Before a supernova all of the stars elements will be fused into iron ...
... They will have one or more large explosions and become a nova A supernova is a star that has such a tremendous explosion that it blows itself apart. Before a supernova all of the stars elements will be fused into iron ...
ASTRONOMY 157 – Stars and Galaxies - Syllabus
... Office hours: 1-2:15 Tue and Th, Cook 514 We will derive details only mentioned in Astr 005 with algebra and basic geometry, appropriate for non-science majors. Most class slides will be posted on UVM Blackboard. ...
... Office hours: 1-2:15 Tue and Th, Cook 514 We will derive details only mentioned in Astr 005 with algebra and basic geometry, appropriate for non-science majors. Most class slides will be posted on UVM Blackboard. ...
Homework 5
... Due November 9, 2012 at 5 p.m., either electronically or on paper. 1. What is a stellar association, how big are they, how many stars do they contain, how long do they last? Finally, what is their fate? ...
... Due November 9, 2012 at 5 p.m., either electronically or on paper. 1. What is a stellar association, how big are they, how many stars do they contain, how long do they last? Finally, what is their fate? ...
ISM&Galaxy
... T~20K, n>1000/cc T~100K, n~20/cc T~5000K, n~0.1-1/cc T~10000K, n~0.01-0.1/cc T~1 million K, n~0.001/cc ...
... T~20K, n>1000/cc T~100K, n~20/cc T~5000K, n~0.1-1/cc T~10000K, n~0.01-0.1/cc T~1 million K, n~0.001/cc ...
PowerPoint File
... • The fuel of a main sequence star is its own mass • More massive stars have more fuel than less massive stars. • But they are using their fuel up at a fast rate, much faster than proportional to their mass. • So, massive stars run out of fuel sooner. The more massive, the shorter their Main Sequenc ...
... • The fuel of a main sequence star is its own mass • More massive stars have more fuel than less massive stars. • But they are using their fuel up at a fast rate, much faster than proportional to their mass. • So, massive stars run out of fuel sooner. The more massive, the shorter their Main Sequenc ...
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.