upperMS - CWRU Astronomy
... Found in OB associations (20+) and smaller OB subgroups (4-10 stars) from molecular clouds (OMC1). A small group of a few OB stars forms, they evolve and ionize gas. The HII region pushes a shock wave into the molecular cloud and compresses gas to start gravitational collapse for a new group of OB s ...
... Found in OB associations (20+) and smaller OB subgroups (4-10 stars) from molecular clouds (OMC1). A small group of a few OB stars forms, they evolve and ionize gas. The HII region pushes a shock wave into the molecular cloud and compresses gas to start gravitational collapse for a new group of OB s ...
Stellar Evolution Lab
... Stage 1- Stars are born in clouds of gas and dust called Nebulas. Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will ...
... Stage 1- Stars are born in clouds of gas and dust called Nebulas. Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will ...
PHYSICS 1500 - ASTRONOMY TOTAL
... following is not a contributing factor to this situation? (a) Mars is close to the asteroid belt, which resulted in widespread cratering in the heavy bombardment period. (b) Venus is a little close to the sun, resulting in a runaway greenhouse effect in the atmosphere. (c) Mars is slightly too small ...
... following is not a contributing factor to this situation? (a) Mars is close to the asteroid belt, which resulted in widespread cratering in the heavy bombardment period. (b) Venus is a little close to the sun, resulting in a runaway greenhouse effect in the atmosphere. (c) Mars is slightly too small ...
Stars: Their Life and Afterlife
... • They trigger new rounds of star formation • They form large-scale structures in the galaxy, called “superbubbles” ...
... • They trigger new rounds of star formation • They form large-scale structures in the galaxy, called “superbubbles” ...
- BIO Web of Conferences
... (SAM) experiment aboard the Curiosity rover, if methane had been detected in sufficient abundances (over 20 ppb). Such an abundance had been tentatively reported from earlier observations (see [3] for a review), but no methane has been detected so far from Curiosity. Another key measurement is the D ...
... (SAM) experiment aboard the Curiosity rover, if methane had been detected in sufficient abundances (over 20 ppb). Such an abundance had been tentatively reported from earlier observations (see [3] for a review), but no methane has been detected so far from Curiosity. Another key measurement is the D ...
HR Diagram
... 12. If scientists discovered a star in a distant galaxy, how could they determine what the star is made of? ...
... 12. If scientists discovered a star in a distant galaxy, how could they determine what the star is made of? ...
Lives of stars HR
... of a pulsar, a rapidly rotating stellar remnant which can appear to blink hundreds or thousands of times per second. The most famous pulsar is in the Crab nebula ...
... of a pulsar, a rapidly rotating stellar remnant which can appear to blink hundreds or thousands of times per second. The most famous pulsar is in the Crab nebula ...
Measuring the Sky - Physics and Astronomy and more!
... True, they emit light, but it’s not a fluid ...
... True, they emit light, but it’s not a fluid ...
Class 1: From Astrology to Astronomy
... • Around 100 BC Claudius Ptolemy took Aristotle's system and put math to it. • He published this in a massive book called the Almagest. • It was the authority for astronomy for almost the next 1000 years. ...
... • Around 100 BC Claudius Ptolemy took Aristotle's system and put math to it. • He published this in a massive book called the Almagest. • It was the authority for astronomy for almost the next 1000 years. ...
Foundations III The Stars
... The surface of a planet that close to our sun would be scorching hot. But because the star Gliese 581 is only about 1 percent as bright as the sun, temperatures on the new planet should be much more comfortable. Taking into account the presence of an atmosphere and how much starlight the planet prob ...
... The surface of a planet that close to our sun would be scorching hot. But because the star Gliese 581 is only about 1 percent as bright as the sun, temperatures on the new planet should be much more comfortable. Taking into account the presence of an atmosphere and how much starlight the planet prob ...
Stellar Evolution
... We do not know that all stars, regardless of their size, eventually run out of fuel and collapse due to gravity Low Mass Stars – consume fuel at a slow rate, may remain on main-sequence for up to 100 billion years, end up collapsing into white dwarfs Medium Mass Stars – go into red-giant stage, foll ...
... We do not know that all stars, regardless of their size, eventually run out of fuel and collapse due to gravity Low Mass Stars – consume fuel at a slow rate, may remain on main-sequence for up to 100 billion years, end up collapsing into white dwarfs Medium Mass Stars – go into red-giant stage, foll ...
Lecture 13: The Stars –
... 1 percent as bright as the sun, temperatures on the new planet should be much more comfortable. Taking into account the presence of an atmosphere and how much starlight the planet probably reflects, astronomers calculated the average temperature ranges from minus 24 degrees to 10 degrees ...
... 1 percent as bright as the sun, temperatures on the new planet should be much more comfortable. Taking into account the presence of an atmosphere and how much starlight the planet probably reflects, astronomers calculated the average temperature ranges from minus 24 degrees to 10 degrees ...
Stars and Light
... • Once the fusion stops, (H runs out) gravity will force the sun to collapse, which will increase the temperature so He can fuse (to form carbon). • When it does this, the outer layers “explode” and it becomes a Red Giant star. ...
... • Once the fusion stops, (H runs out) gravity will force the sun to collapse, which will increase the temperature so He can fuse (to form carbon). • When it does this, the outer layers “explode” and it becomes a Red Giant star. ...
How are stars formed
... Stars of roughly sun’s mass ( < 8 solar masses) do not have necessary gravitational pull to create heat and pressure necessary to begin fusing carbon ...
... Stars of roughly sun’s mass ( < 8 solar masses) do not have necessary gravitational pull to create heat and pressure necessary to begin fusing carbon ...
Nuclear fusion in stars
... Since the Coulomb barrier for carbon is six times that of hydrogen, much higher temperatures are needed for this reaction to work. The CNO cycle is important in stars with masses larger than 1.1 M (core temperatures higher than 16 million K) At even higher temperatures, carbon fusion leads to synth ...
... Since the Coulomb barrier for carbon is six times that of hydrogen, much higher temperatures are needed for this reaction to work. The CNO cycle is important in stars with masses larger than 1.1 M (core temperatures higher than 16 million K) At even higher temperatures, carbon fusion leads to synth ...
Where do Stars Form ?
... Star Clusters Because Star Clusters were formed all at once, they give us a way of seeing “snapshots” of stellar evolution. All the stars have (very, very nearly) the same distance modulus, so we only need their apparent magnitudes. ...
... Star Clusters Because Star Clusters were formed all at once, they give us a way of seeing “snapshots” of stellar evolution. All the stars have (very, very nearly) the same distance modulus, so we only need their apparent magnitudes. ...
Ay123 Fall 2011 STELLAR STRUCTURE AND EVOLUTION Problem Set 1
... e. Write down an explicit expression for the total gravitational potential energy of this toy star, and verify that the virial theorem is exactly satisfied. Be sure to discuss matter with a general equation of state, not just an ideal monatomic nonrelativistic gas. 2. The Kelvin-Helmholtz timescale: ...
... e. Write down an explicit expression for the total gravitational potential energy of this toy star, and verify that the virial theorem is exactly satisfied. Be sure to discuss matter with a general equation of state, not just an ideal monatomic nonrelativistic gas. 2. The Kelvin-Helmholtz timescale: ...
Deep Space Objects
... almost nothing – usually not even light – can escape. This is known as a black hole. One scientist once likened a black hole to “an object that dug a hole, jumped in the hole, then pulled the hole in after itself.” Galaxies and Quasars Today astronomers generally believe that one or more super-massi ...
... almost nothing – usually not even light – can escape. This is known as a black hole. One scientist once likened a black hole to “an object that dug a hole, jumped in the hole, then pulled the hole in after itself.” Galaxies and Quasars Today astronomers generally believe that one or more super-massi ...
Birth of Stars
... For main-sequence stars, the most massive (spectral type O) are also the most luminous and have the highest surface-temperature, whereas the least massive (spectral type M or L) are the least luminous and the coolest A galaxy of stars, such as the Milky Way, contains huge amounts of gas and dust, en ...
... For main-sequence stars, the most massive (spectral type O) are also the most luminous and have the highest surface-temperature, whereas the least massive (spectral type M or L) are the least luminous and the coolest A galaxy of stars, such as the Milky Way, contains huge amounts of gas and dust, en ...
Phase Analysis of RV Tauri and Semi-regular Variables Abstract
... RV Tauri variable stars, related classes of pulsating variable stars. The ultimate objective for our research is to determine whether the stars stellar properties such as temperature, radius, and luminosity correlate with their pulsation cycles. In order to determine this, we need to closely examine ...
... RV Tauri variable stars, related classes of pulsating variable stars. The ultimate objective for our research is to determine whether the stars stellar properties such as temperature, radius, and luminosity correlate with their pulsation cycles. In order to determine this, we need to closely examine ...
Document
... Hydrogen through Iron (which makes up our planets and other new stars) and forms all elements after Iron (up to element 92- Uranium). ...
... Hydrogen through Iron (which makes up our planets and other new stars) and forms all elements after Iron (up to element 92- Uranium). ...
Models of the Solar System - Middle School Science & Algebra I
... Copernicus was a priest who was given the job of making a map of the motion of the sky to help out with a new calendar. ► He rediscovered the heliocentric model around 1515, when he decided it just made more sense logically, and matched his observations better. ► He was uneasy about his discovery, t ...
... Copernicus was a priest who was given the job of making a map of the motion of the sky to help out with a new calendar. ► He rediscovered the heliocentric model around 1515, when he decided it just made more sense logically, and matched his observations better. ► He was uneasy about his discovery, t ...
`Eye` stars at planetarium
... Museum s \ndrus Space Transit Planetarium and its new show The Hungrv K \ e This hungrv eye is nlso a California institution hut much older than the Kingston Trio s showc ase It is the 200-inch telescope at Mt Palomar Observatory which can reach farther into space than an> other telescope in the wor ...
... Museum s \ndrus Space Transit Planetarium and its new show The Hungrv K \ e This hungrv eye is nlso a California institution hut much older than the Kingston Trio s showc ase It is the 200-inch telescope at Mt Palomar Observatory which can reach farther into space than an> other telescope in the wor ...