Astr40 HWII - Empyrean Quest Publishers
... B. hot portions of gas rising to the surface, and cool ones falling. C. heat transfer by contact of molecules. 32. The reason for the low number of detections of which solar particle (at earth) was under dispute for a long time? A. gamma rays B. electrons C. neutrinos 33. The apparent brightness of ...
... B. hot portions of gas rising to the surface, and cool ones falling. C. heat transfer by contact of molecules. 32. The reason for the low number of detections of which solar particle (at earth) was under dispute for a long time? A. gamma rays B. electrons C. neutrinos 33. The apparent brightness of ...
Super Giant
... Explain why the moon revolves around the Earth instead of the Sun. Even though the moon is larger than Pluto, which DOES revolve around the Sun, The moon revolves around the Earth because it is CLOSER to the Earth. The two factors that determine the force of gravity are mass and distance. What relat ...
... Explain why the moon revolves around the Earth instead of the Sun. Even though the moon is larger than Pluto, which DOES revolve around the Sun, The moon revolves around the Earth because it is CLOSER to the Earth. The two factors that determine the force of gravity are mass and distance. What relat ...
The Milky Way - National Tsing Hua University
... through variations of the pulsar period. As the planets orbit around the pulsar, they cause it to wobble around, resulting in slight changes of the observed pulsar period. ...
... through variations of the pulsar period. As the planets orbit around the pulsar, they cause it to wobble around, resulting in slight changes of the observed pulsar period. ...
Exam #2 Solutions
... The cooler giant stars are mostly K and M giants with temperatures around 5,000 K to 3,000K and luminosities between 50 and 5,000 solar luminosities. The stars are all larger in radius than the Sun, being between 1 and 100 solar radii. All these stars will have very short lifetimes compared to ...
... The cooler giant stars are mostly K and M giants with temperatures around 5,000 K to 3,000K and luminosities between 50 and 5,000 solar luminosities. The stars are all larger in radius than the Sun, being between 1 and 100 solar radii. All these stars will have very short lifetimes compared to ...
Climbing the Cosmic Distance Ladder: How Astronomers Measure
... Distances to very distant stars • This gave a way to obtain the absolute brightness for these stars, and hence observed distances. • Because Cepheids are so bright, this method works up to 13,000,000 light years, well beyond the Milky Way! Most galaxies are fortunate to have at least one ...
... Distances to very distant stars • This gave a way to obtain the absolute brightness for these stars, and hence observed distances. • Because Cepheids are so bright, this method works up to 13,000,000 light years, well beyond the Milky Way! Most galaxies are fortunate to have at least one ...
Cosmological Aspects of Nucleosynthesis
... Conclusion from previous Figure: It seems that the r-process could be divided like the s-process into 2 components : weak r-process ( so far it is called LEPP=Light Element Primary Process) main r-process (classical r-process) ...
... Conclusion from previous Figure: It seems that the r-process could be divided like the s-process into 2 components : weak r-process ( so far it is called LEPP=Light Element Primary Process) main r-process (classical r-process) ...
chapter15SurveyStars..
... How would the apparent brightness of Alpha Centauri change if it were three times farther away? A. B. C. D. ...
... How would the apparent brightness of Alpha Centauri change if it were three times farther away? A. B. C. D. ...
a MS Word version.
... 5. What are population I and population II stars? Describe each population in terms of; location in the galaxy & orbital motion, composition, and age. Who first came up with this idea of stellar populations? ...
... 5. What are population I and population II stars? Describe each population in terms of; location in the galaxy & orbital motion, composition, and age. Who first came up with this idea of stellar populations? ...
File - Mr. Catt`s Class
... formed red giant will result in the formation of an accretion disk around the white dwarf. The material in the disk comes from the red giant and is mostly hydrogen. 2. An accretion disk is a rotating disk of gas orbiting a star, formed by material falling toward the star. ...
... formed red giant will result in the formation of an accretion disk around the white dwarf. The material in the disk comes from the red giant and is mostly hydrogen. 2. An accretion disk is a rotating disk of gas orbiting a star, formed by material falling toward the star. ...
V Example: our SUN (G2V)
... star apart, usually leaving behind a neutron star. Supernovae can also be produced when enough material is deposited on a white dwarf so that is exceeds the Chandrasekhar limit and collapses to a neutron star. Both types of supernova drastically alter the stars and are the result of the collapse ste ...
... star apart, usually leaving behind a neutron star. Supernovae can also be produced when enough material is deposited on a white dwarf so that is exceeds the Chandrasekhar limit and collapses to a neutron star. Both types of supernova drastically alter the stars and are the result of the collapse ste ...
Energy sources
... Galaxy Clusters: energy source: Shock Heating • Over last 10 Billion years there have been many galaxy collisions in galaxy clusters. • When two galaxies pass through each other stars will continue on their original path – more or less. • Interstellar gas clouds collide and cannot pass through each ...
... Galaxy Clusters: energy source: Shock Heating • Over last 10 Billion years there have been many galaxy collisions in galaxy clusters. • When two galaxies pass through each other stars will continue on their original path – more or less. • Interstellar gas clouds collide and cannot pass through each ...
question - UW Canvas
... 23. How is it that the core of a massive star is able to fuse heavier and heavier elements without any of these stages resulting in degeneracy or any flashes like the helium flash that occurs in solar-type stars? a. The cores of massive stars are so hot, have such high densities and pressures, that ...
... 23. How is it that the core of a massive star is able to fuse heavier and heavier elements without any of these stages resulting in degeneracy or any flashes like the helium flash that occurs in solar-type stars? a. The cores of massive stars are so hot, have such high densities and pressures, that ...
Using Star Charts Introduction A Digression on Star Names
... are Alpha Lyrae, Delta Scorpii, Beta Cygni. You might notice that the names of the constellations have changed a little, i.e. Lyra goes to Lyrae, Scorpius to Scorpii, and Cygnus to Cygni. Those who have studied Latin will recognize the latter forms as the genitive, or possessive of the first form. D ...
... are Alpha Lyrae, Delta Scorpii, Beta Cygni. You might notice that the names of the constellations have changed a little, i.e. Lyra goes to Lyrae, Scorpius to Scorpii, and Cygnus to Cygni. Those who have studied Latin will recognize the latter forms as the genitive, or possessive of the first form. D ...
Leaving the Main Sequence
... million K for He burning - in massive star’s cores), then carbon, oxygen, etc. The most massive stars will have cores of iron. Nothing past iron is created. (To create iron requires 2 billion K.) ...
... million K for He burning - in massive star’s cores), then carbon, oxygen, etc. The most massive stars will have cores of iron. Nothing past iron is created. (To create iron requires 2 billion K.) ...
Ay123 Homework 1 Solutions
... Sketch a plot of the stellar-remnant (i.e., white dwarf, neutron star, black hole) mass as a function of the initial stellar mass. There are very detailed models for finding the remnant mass given an initial mass, but I will use rough numbers to keep it simple. The stellar remnant (Mr ) vs. initial ...
... Sketch a plot of the stellar-remnant (i.e., white dwarf, neutron star, black hole) mass as a function of the initial stellar mass. There are very detailed models for finding the remnant mass given an initial mass, but I will use rough numbers to keep it simple. The stellar remnant (Mr ) vs. initial ...
Supernovae Oct 19 − Supernova 1987A
... Sirius A, a main-sequence star Sirius B, an earth-sized white dwarf ...
... Sirius A, a main-sequence star Sirius B, an earth-sized white dwarf ...
Atoms and Starlight Generating light
... The spectral lines confirm its temperature and tell us about its composition ...
... The spectral lines confirm its temperature and tell us about its composition ...
Dynamical models of the nucleus of M31
... relaxation (details depend on age of stars) • vector resonant relaxation conserves semi-major axis and eccentricity but not the direction of orbit normal • preliminary models suggest that some or all of the curious features of the stellar distribution in the Galactic center arise naturally in therma ...
... relaxation (details depend on age of stars) • vector resonant relaxation conserves semi-major axis and eccentricity but not the direction of orbit normal • preliminary models suggest that some or all of the curious features of the stellar distribution in the Galactic center arise naturally in therma ...
Death of the Stars
... Actually the pulsar does not “pulse”, however it radiates a sharp beam from the magnetic poles. Because the whole star rotates quickly, only from time to time the Earth stands on the path of this sharp beam, hence we see the pulsar as pulsating. ...
... Actually the pulsar does not “pulse”, however it radiates a sharp beam from the magnetic poles. Because the whole star rotates quickly, only from time to time the Earth stands on the path of this sharp beam, hence we see the pulsar as pulsating. ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.