30.2 PowerPoint Stellar Evolution
... Stingray nebula (Hen-1357), the youngest known planetary nebula. ...
... Stingray nebula (Hen-1357), the youngest known planetary nebula. ...
PHYS-633: Problem set #2
... Helium, with a mass fraction Y ≈ 0.26. Use the above to compute the average mass fractions Xtams and Ytams at the end of the sun’s main sequence life (known as “TAMS”, for “terminal age main sequence”). e. After the main sequence, the sun will evolve into a Red Giant with L ≈ 5000L , by burning H i ...
... Helium, with a mass fraction Y ≈ 0.26. Use the above to compute the average mass fractions Xtams and Ytams at the end of the sun’s main sequence life (known as “TAMS”, for “terminal age main sequence”). e. After the main sequence, the sun will evolve into a Red Giant with L ≈ 5000L , by burning H i ...
The phenomena of astrophysical masers are not new by any means
... though it is incoherent and intensity based rather than field-based. When the large path length of the scattered photons is coupled with the already large path length of the medium substantial gain may be recorded. The discovery of astronomical masers confirmed the existence of multiple compounds bo ...
... though it is incoherent and intensity based rather than field-based. When the large path length of the scattered photons is coupled with the already large path length of the medium substantial gain may be recorded. The discovery of astronomical masers confirmed the existence of multiple compounds bo ...
Properties of Stars - Mr. Carter`s Earth
... temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of stars, the term “luminosity” is often used. Luminosity is a measure of how much energy leaves a star in a certain period of t ...
... temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were all the same distance away. Rather than speak of the brightness of stars, the term “luminosity” is often used. Luminosity is a measure of how much energy leaves a star in a certain period of t ...
nasafinal - University of Oregon
... NASA has recently launched two satellite observatories whose capabilities are directly related to current faculty research that is underway at the Pine Mountain Observatory. These missions are 1) The Spitzer Space Telescope (SST) – which is an imaging telescope that operates in the infrared (spectra ...
... NASA has recently launched two satellite observatories whose capabilities are directly related to current faculty research that is underway at the Pine Mountain Observatory. These missions are 1) The Spitzer Space Telescope (SST) – which is an imaging telescope that operates in the infrared (spectra ...
Sample Final - IUPUI Physics
... 60) If the sun were to be located in Cluster A then what would the approximate V value of the sun be (the sun as view from Earth has a B-V = 0.68)? A) 3 B) 8 C) 12 D) 15 61) Which cluster is older? A) cluster A B) cluster B C) both clusters are the same age D) it is impossible to compare the ages o ...
... 60) If the sun were to be located in Cluster A then what would the approximate V value of the sun be (the sun as view from Earth has a B-V = 0.68)? A) 3 B) 8 C) 12 D) 15 61) Which cluster is older? A) cluster A B) cluster B C) both clusters are the same age D) it is impossible to compare the ages o ...
MULTIPLE CHOICE QUESTIONS (50 pts
... B. using its distance from the Sun and its rotational period. C. using its angular size and distance from Earth. D. using data from spacecraft flybys. E. by measuring the time that it takes for the Red Spot to disappear from view. 21. Today the Sun physically dips below the horizon at 7:52 PM EDT. H ...
... B. using its distance from the Sun and its rotational period. C. using its angular size and distance from Earth. D. using data from spacecraft flybys. E. by measuring the time that it takes for the Red Spot to disappear from view. 21. Today the Sun physically dips below the horizon at 7:52 PM EDT. H ...
Supernovae Oct 19 − Supernova 1987A
... Pre-existing circumstellar ring lit up first by photons from SN, now by blast wave from SN. ...
... Pre-existing circumstellar ring lit up first by photons from SN, now by blast wave from SN. ...
Lesson 4, Stars
... red giant, and finally, a white dwarf. A more-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a very massive star, a supergiant, a supernova, and finally, either a neutron star (pulsar) or a black hole. ...
... red giant, and finally, a white dwarf. A more-massive star: begins as a nebula, becomes a protostar, a main-sequence star, a very massive star, a supergiant, a supernova, and finally, either a neutron star (pulsar) or a black hole. ...
White dwarfs that crossed the Chandrasekhar limit
... matter and gathers more due to gravity. At a certain point, nuclear reaction is sparked at its core balancing the gravitational collapse and thus a star gets established. Once the star runs out of nuclear fuel, due to the crushing gravity, it violently explodes forming an outer shell and an inner co ...
... matter and gathers more due to gravity. At a certain point, nuclear reaction is sparked at its core balancing the gravitational collapse and thus a star gets established. Once the star runs out of nuclear fuel, due to the crushing gravity, it violently explodes forming an outer shell and an inner co ...
Characteristics of Stars
... force of nuclear _fusion__ pushing out and so the star is stable. 17. When a nebula grows and the force of gravity attracts more and more dust and gas, the temperature warms and a -protostar is formed. 18. Eventually, the temperature reaches 10 000 000 °C and nuclear _fusion occurs. A star is born! ...
... force of nuclear _fusion__ pushing out and so the star is stable. 17. When a nebula grows and the force of gravity attracts more and more dust and gas, the temperature warms and a -protostar is formed. 18. Eventually, the temperature reaches 10 000 000 °C and nuclear _fusion occurs. A star is born! ...
16. Properties of Stars
... Lifetime on the Main Sequence How long will it be before MS stars run out of fuel? i.e. Hydrogen? How much fuel is there? M How fast is it consumed? L M How long before it is used up? Time = Amount/(rate it is being used) ...
... Lifetime on the Main Sequence How long will it be before MS stars run out of fuel? i.e. Hydrogen? How much fuel is there? M How fast is it consumed? L M How long before it is used up? Time = Amount/(rate it is being used) ...
Microsoft Power Point version
... Lifetime on the Main Sequence How long will it be before MS stars run out of fuel? i.e. Hydrogen? How much fuel is there? M How fast is it consumed? L M How long before it is used up? Time = Amount/(rate it is being used) ...
... Lifetime on the Main Sequence How long will it be before MS stars run out of fuel? i.e. Hydrogen? How much fuel is there? M How fast is it consumed? L M How long before it is used up? Time = Amount/(rate it is being used) ...
Nobel Prize in Physics for Accelerating Universe
... Planetary nebulae are mostly composed of A) hydrogen. B) helium. C) carbon. D) oxygen. ...
... Planetary nebulae are mostly composed of A) hydrogen. B) helium. C) carbon. D) oxygen. ...
and Concept Self-test (1,2,3,5,6,7,8,9)
... Neutron stars can also have magnetic fields a million times stronger than the strongest magnetic fields produced on Earth. Neutron stars are one of the possible ends for a star. They result from massive stars which have mass greater than 4 to 8 times that of our Sun. After these stars have finished ...
... Neutron stars can also have magnetic fields a million times stronger than the strongest magnetic fields produced on Earth. Neutron stars are one of the possible ends for a star. They result from massive stars which have mass greater than 4 to 8 times that of our Sun. After these stars have finished ...
the rest of the univ..
... A myriad of comets and other debris orbiting at distances up to ;;; complete our Solar System. The Kuiper Belt and The Oort Cloud In 1950 Jan Oort noticed that: 1.no comet has been observed with an orbit that indicates that it came from interstellar space. 2.there is a strong tendency for aphelia of ...
... A myriad of comets and other debris orbiting at distances up to ;;; complete our Solar System. The Kuiper Belt and The Oort Cloud In 1950 Jan Oort noticed that: 1.no comet has been observed with an orbit that indicates that it came from interstellar space. 2.there is a strong tendency for aphelia of ...
M = 5.5 - The Millstone
... Case 1 Stars = 1 Solar Mass -> Red Giant -> White dwarf Stars such as our Sun move off the main sequence and enter the red giant branch (RGB), when the core hydrogen is exhausted. With no thermonuclear fusion in the core, the star contracts . An outer shell of hydrogen continues to burn and the radi ...
... Case 1 Stars = 1 Solar Mass -> Red Giant -> White dwarf Stars such as our Sun move off the main sequence and enter the red giant branch (RGB), when the core hydrogen is exhausted. With no thermonuclear fusion in the core, the star contracts . An outer shell of hydrogen continues to burn and the radi ...
Handout 15: Virial Theorem E = P.E. + K.E = (1/2)P.E. = -K.E.
... Therefore more tightly bound than constant density Therefore PE is more negative than this ...
... Therefore more tightly bound than constant density Therefore PE is more negative than this ...
Lecture 4 - Orbits of the planets
... Venus and the Sun must move together with the epicycle of Venus centered on a line between the Earth and the Sun • Then, Venus can never be the opposite side of the Sun from the Earth, so it can never have gibbous phases – no “full Venus”. ...
... Venus and the Sun must move together with the epicycle of Venus centered on a line between the Earth and the Sun • Then, Venus can never be the opposite side of the Sun from the Earth, so it can never have gibbous phases – no “full Venus”. ...