Extra Credit
... Know what total internal reflection is, what the critical angle is, and how to derive Equation (33-44) for the critical angle: n c sin 1 2 n1 where n1 and n2 are the indices of refraction of the media which form the boundary on which the light is incident. Light is incident in medium 1 and for t ...
... Know what total internal reflection is, what the critical angle is, and how to derive Equation (33-44) for the critical angle: n c sin 1 2 n1 where n1 and n2 are the indices of refraction of the media which form the boundary on which the light is incident. Light is incident in medium 1 and for t ...
as a PDF
... the inferred circumstellar masses of dust and gas surrounding classical T-Tauri Stars (cTTSs), measured by millimeter continuum observations, preclude a simple spherical distribution of the circumstellar material about such stars (Rydgren et al. 1982). The mass involved would, if spherically distrib ...
... the inferred circumstellar masses of dust and gas surrounding classical T-Tauri Stars (cTTSs), measured by millimeter continuum observations, preclude a simple spherical distribution of the circumstellar material about such stars (Rydgren et al. 1982). The mass involved would, if spherically distrib ...
Killer Skies
... known as the Crab Nebula. The Crab Nebula is called so for its many-legged shape. The ‘legs’ are filaments of gas that are moving away from the site of the explosion at about 1,400 km/s. Comparing the nebula’s radius, 1.35 pc, with its velocity of expansion reveals that the nebula began expanding ni ...
... known as the Crab Nebula. The Crab Nebula is called so for its many-legged shape. The ‘legs’ are filaments of gas that are moving away from the site of the explosion at about 1,400 km/s. Comparing the nebula’s radius, 1.35 pc, with its velocity of expansion reveals that the nebula began expanding ni ...
The Rigel Star - Emmi
... – Rigel will eventually cool to be a red supergiant, then explode into a supernova. – Although it is large, Rigel is not massive enough to create a black hole. – Rigel will probably become a neutron star or a pulsar within the next couple million years ...
... – Rigel will eventually cool to be a red supergiant, then explode into a supernova. – Although it is large, Rigel is not massive enough to create a black hole. – Rigel will probably become a neutron star or a pulsar within the next couple million years ...
Astrophysical false positives in direct imaging for exoplanets: a white
... of circumbinary planets, but alternative explanations cannot be firmly ruled out (Zorotovic & Schreiber 2012). A recent case of TTVs induced by stellar activity (star spot features modulating the brightness of the host) instead of the gravitational influence of a planet is described in Barros et al. ...
... of circumbinary planets, but alternative explanations cannot be firmly ruled out (Zorotovic & Schreiber 2012). A recent case of TTVs induced by stellar activity (star spot features modulating the brightness of the host) instead of the gravitational influence of a planet is described in Barros et al. ...
Stars: Their Life and Afterlife
... Stars are hottest in their cores and their material cools as one moves outward from the core to the surface. For stars similar to the Sun (with masses ~0.4-4.0 MŸ), during their main-sequence lifetime they have a hydrogen-fusing core with a temperature of a few million degrees and a surface temperat ...
... Stars are hottest in their cores and their material cools as one moves outward from the core to the surface. For stars similar to the Sun (with masses ~0.4-4.0 MŸ), during their main-sequence lifetime they have a hydrogen-fusing core with a temperature of a few million degrees and a surface temperat ...
Lecture 30
... Consider a protostar with thermal energy U and gravitational potential energy W. Virial theorem: ...
... Consider a protostar with thermal energy U and gravitational potential energy W. Virial theorem: ...
Letter to the Editor - Max-Planck
... Beaming immediately suggests a connection with the model presented above of nonthermal ECS from a relativistic jet in a microquasar. The peak luminosity of ECS appears amplified due to Doppler boosting by a factor of D5 for a continuous jet. Even using the mildly relativistic jet parameters appropri ...
... Beaming immediately suggests a connection with the model presented above of nonthermal ECS from a relativistic jet in a microquasar. The peak luminosity of ECS appears amplified due to Doppler boosting by a factor of D5 for a continuous jet. Even using the mildly relativistic jet parameters appropri ...
Measuring the Hyperfine Splittings of Lowest Energy Atomic
... ground to first excited state transitions in rubidium (Rb) using saturated absorption spectroscopy. Motivations for measuring and understanding these energy spacings include serving as a test of quantum mechanical perturbation theory and also the posterity of research at Otterbein University. Upcomi ...
... ground to first excited state transitions in rubidium (Rb) using saturated absorption spectroscopy. Motivations for measuring and understanding these energy spacings include serving as a test of quantum mechanical perturbation theory and also the posterity of research at Otterbein University. Upcomi ...
contributed talk in splinter session
... model since field strengths derived from circular polarisation measurements are of order 100G, not the 1000G values needed by disk-locking theory. In addition, the field lines that connect beyond the co-rotation radius and provide the spin down torque will be opened up by the shearing effect of the ...
... model since field strengths derived from circular polarisation measurements are of order 100G, not the 1000G values needed by disk-locking theory. In addition, the field lines that connect beyond the co-rotation radius and provide the spin down torque will be opened up by the shearing effect of the ...
Lecture12
... Cepheid variable stars are very luminous and can be observed over very large distances. Why are such stars important to astronomers? A. They confirm the theory of nuclear fusion as the energy source for stars. B. They can be used as distance indicators because their luminosity can be determined fro ...
... Cepheid variable stars are very luminous and can be observed over very large distances. Why are such stars important to astronomers? A. They confirm the theory of nuclear fusion as the energy source for stars. B. They can be used as distance indicators because their luminosity can be determined fro ...
EyeDynamicRange
... to the brain to trigger a conscious response when at least about five to nine arrive within less than 100 ms. If we could consciously see single photons we would experience too much visual "noise" in very low light, so this filter is a necessary adaptation, not a weakness. Some people have said that ...
... to the brain to trigger a conscious response when at least about five to nine arrive within less than 100 ms. If we could consciously see single photons we would experience too much visual "noise" in very low light, so this filter is a necessary adaptation, not a weakness. Some people have said that ...
Orbital Instabilities in Triaxial Mass Distributions and
... Circumstellar Disk Lifetime = 3 - 10 Myr Giant Planet Formation Time = 3 - 10 Myr ---------------------------------------------------Terrestrial Planet Formation = 100 Myr Late Heavy Bombardment = 600 Myr Open Cluster Lifetime = 100 - 1000 Myr CONJECTURE: The cluster environment affects planet forma ...
... Circumstellar Disk Lifetime = 3 - 10 Myr Giant Planet Formation Time = 3 - 10 Myr ---------------------------------------------------Terrestrial Planet Formation = 100 Myr Late Heavy Bombardment = 600 Myr Open Cluster Lifetime = 100 - 1000 Myr CONJECTURE: The cluster environment affects planet forma ...
what`s up this month – march 2016
... To the east of Cancer is the magnificent constellation of Leo the Lion. It is one of the few constellations that do look like what it is supposed to represent. Leo was the constellation of the month last month. Leo heralds spring and the ‘Season of the Galaxies’. Leo is on the edge of a large group ...
... To the east of Cancer is the magnificent constellation of Leo the Lion. It is one of the few constellations that do look like what it is supposed to represent. Leo was the constellation of the month last month. Leo heralds spring and the ‘Season of the Galaxies’. Leo is on the edge of a large group ...
Black Holes - University of Oregon
... reasoned that if light is made up of particles (as Newton thought) then if a star was sufficiently massive the escape velocity of particles from that star might be larger than the speed of light. In this case, no light emitted by the object could ever escape the object and therefore it would be blac ...
... reasoned that if light is made up of particles (as Newton thought) then if a star was sufficiently massive the escape velocity of particles from that star might be larger than the speed of light. In this case, no light emitted by the object could ever escape the object and therefore it would be blac ...
BMS 631 - Lecture 4
... – Direction change of a ray of light passing from one transparent medium to another with different optical density. A ray from less to more dense medium is bent perpendicular to the surface, with greater deviation for shorter wavelengths ...
... – Direction change of a ray of light passing from one transparent medium to another with different optical density. A ray from less to more dense medium is bent perpendicular to the surface, with greater deviation for shorter wavelengths ...
Birth, Lives, and Death of Stars
... Low mass stars can only synthesize helium. Stars similar to our Sun can synthesize He, C, O. Massive stars (M* > 5 solar masses) can synthesize He, C, O, Ne. Mg, Si, S, Ar, Ca, Ti, Cr, Fe. Elements heavier than iron are made in supernova explosions from the combination of the abundant neutrons with ...
... Low mass stars can only synthesize helium. Stars similar to our Sun can synthesize He, C, O. Massive stars (M* > 5 solar masses) can synthesize He, C, O, Ne. Mg, Si, S, Ar, Ca, Ti, Cr, Fe. Elements heavier than iron are made in supernova explosions from the combination of the abundant neutrons with ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.