pierrehumbert_lecture_1
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
... the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviolet drives photochemistry, and can break up heavy molecules into lighte ...
Word Document - Montana State University Extended
... what chain of events lead up to the emergence of complex life on this planet. One of the factors that scientists believe to be necessary is a long period of relatively stable climate resulting from a stable planetary orbit at just the right distance from an appropriate type of star. Let's begin our ...
... what chain of events lead up to the emergence of complex life on this planet. One of the factors that scientists believe to be necessary is a long period of relatively stable climate resulting from a stable planetary orbit at just the right distance from an appropriate type of star. Let's begin our ...
Main Sequence Lifetime
... • Stars in this phase have a narrow range of luminosities, about one hundredth of their luminosity at the time of the helium flash, but still much more luminous than their main sequence stage • They are know as horizontal branch stars from their locations on the H-R diagram, where they remain for ab ...
... • Stars in this phase have a narrow range of luminosities, about one hundredth of their luminosity at the time of the helium flash, but still much more luminous than their main sequence stage • They are know as horizontal branch stars from their locations on the H-R diagram, where they remain for ab ...
Ay 20 - Caltech
... (c) Is this resolution limit likely to be achieved? Why or why not? PROBLEM 2 (C&O Problem 6.9): The New Technology Telescope (NTT) is operated by the European Southern Observatory at Cerro La Silla. This telescope was used as a test-bed for evaluating the adaptive optics technology used in the VLT. ...
... (c) Is this resolution limit likely to be achieved? Why or why not? PROBLEM 2 (C&O Problem 6.9): The New Technology Telescope (NTT) is operated by the European Southern Observatory at Cerro La Silla. This telescope was used as a test-bed for evaluating the adaptive optics technology used in the VLT. ...
The Milky Way
... How can we measure the mass of the Milky Way? Why do stars behind dust clouds appear red? Why is the sky blue? Why are wavelengths of light outside the visible useful in studying the Milky Way? • How is the 21 cm line of Hydrogen produced? • Describe the spiral arms of the Milky Way and what ...
... How can we measure the mass of the Milky Way? Why do stars behind dust clouds appear red? Why is the sky blue? Why are wavelengths of light outside the visible useful in studying the Milky Way? • How is the 21 cm line of Hydrogen produced? • Describe the spiral arms of the Milky Way and what ...
H-RDiagramSE
... diagram and become giants or supergiants. Giants and supergiants form when the center of a star collapses and its outer parts expand outwards. What are the characteristics of giants and supergiants? _____________________________ ...
... diagram and become giants or supergiants. Giants and supergiants form when the center of a star collapses and its outer parts expand outwards. What are the characteristics of giants and supergiants? _____________________________ ...
Chapter 19
... ● They receive more of the Sun’s energy and have higher temperatures than the outer planets. ● In order the terrestrial planets are Mercury, Venus, Earth, and Mars. These planets are small, solid, and rocky. ● The surfaces of the Terrestrial planets are studied by scientists with telescopes satellit ...
... ● They receive more of the Sun’s energy and have higher temperatures than the outer planets. ● In order the terrestrial planets are Mercury, Venus, Earth, and Mars. These planets are small, solid, and rocky. ● The surfaces of the Terrestrial planets are studied by scientists with telescopes satellit ...
Star - Uplift Education
... roughly uniformly in all directions. The Big Bang predicts an expanding universe that had a very high temperature at the beginning; during the expansion the universe is cooling down and the temperature of the radiation should fall to its present low value of about 2.7 K. • That radiation corresponds ...
... roughly uniformly in all directions. The Big Bang predicts an expanding universe that had a very high temperature at the beginning; during the expansion the universe is cooling down and the temperature of the radiation should fall to its present low value of about 2.7 K. • That radiation corresponds ...
Senior thesis - University of Texas Astronomy Home Page
... every field of astronomy. Using precision asteroseismology, we can explore, for example, a star’s mass, rotation rate, equation of state, and nuclear reaction rates. By studying the rate of change of WD pulsations we can explore galactic time measurements, orbiting planets, dark matter theories, or ...
... every field of astronomy. Using precision asteroseismology, we can explore, for example, a star’s mass, rotation rate, equation of state, and nuclear reaction rates. By studying the rate of change of WD pulsations we can explore galactic time measurements, orbiting planets, dark matter theories, or ...
Sakurai`s Object - Department of Physics, HKU
... circular planetary nebula around the central star V4334 SGR. • At this point, it is clear that Sakurai has discovered an object undergoing a final helium flash. • And for the first time, this object is referred to as the Sakurai’s Object (櫻井天體). ...
... circular planetary nebula around the central star V4334 SGR. • At this point, it is clear that Sakurai has discovered an object undergoing a final helium flash. • And for the first time, this object is referred to as the Sakurai’s Object (櫻井天體). ...
chapter 2
... also at present. From the ancient time, man has observed stars and planets appearing in the night sky and he has come up with various theories about them. Accordingly, astronomy can be considered as the oldest science in the world. It was the Greeks who introduced Astronomy as a science of studying ...
... also at present. From the ancient time, man has observed stars and planets appearing in the night sky and he has come up with various theories about them. Accordingly, astronomy can be considered as the oldest science in the world. It was the Greeks who introduced Astronomy as a science of studying ...
slides
... Today at that location we see a nebula, with gases in the cloud expanding outward at about 1,500 km/s. In 1967 a pulsar was discovered in it. – period 33 ms (flashes 30 times per second), slowin ...
... Today at that location we see a nebula, with gases in the cloud expanding outward at about 1,500 km/s. In 1967 a pulsar was discovered in it. – period 33 ms (flashes 30 times per second), slowin ...
Introduction to Astronomy
... – A fundamental limit to the number of electrons that can be squeezed into a given volume – When this limit is reached, there appears a “pressure” that keeps any more electrons from entering the volume – This “electron pressure” supports the white dwarf against its own gravity ...
... – A fundamental limit to the number of electrons that can be squeezed into a given volume – When this limit is reached, there appears a “pressure” that keeps any more electrons from entering the volume – This “electron pressure” supports the white dwarf against its own gravity ...
Our Solar System and Beyond
... It has a planet orbiting at less than 1 AU. It has a planet orbiting at greater than 1 AU. It has a planet orbiting at exactly 1 AU. It has a planet, but we do not have enough information to know its orbital distance. ...
... It has a planet orbiting at less than 1 AU. It has a planet orbiting at greater than 1 AU. It has a planet orbiting at exactly 1 AU. It has a planet, but we do not have enough information to know its orbital distance. ...
Chapter 6: Stellar Evolution (part 2)
... A PISN may be distinguished from other SNe by its very long duration to peak brightness, together with its brightness due to the production of much more radioactive Ni. ...
... A PISN may be distinguished from other SNe by its very long duration to peak brightness, together with its brightness due to the production of much more radioactive Ni. ...
HR Diagram Explorer
... An actual HR Diagram is provided in the upper right panel with an active location indicated by a red x. This active location can be dragged around the diagram. The options panel allows you control the variables plotted on the x-axis: (temperature, B-V, or spectral type) and those plotted on the y-ax ...
... An actual HR Diagram is provided in the upper right panel with an active location indicated by a red x. This active location can be dragged around the diagram. The options panel allows you control the variables plotted on the x-axis: (temperature, B-V, or spectral type) and those plotted on the y-ax ...
Define the following terms in the space provided
... G) Would a star with a declination of +60 be circumpolar? Explain. A star with a declination of +60 be circumpolar. It would dip to 2° above the northern horizon. H) What would be altitude of the Celestial Equator looking south? The altitude of the Celestial Equator looking south would be 58°. I) ...
... G) Would a star with a declination of +60 be circumpolar? Explain. A star with a declination of +60 be circumpolar. It would dip to 2° above the northern horizon. H) What would be altitude of the Celestial Equator looking south? The altitude of the Celestial Equator looking south would be 58°. I) ...
The Origin of the Solar System: Progress in Understanding Accretion
... km-sized and smaller objects in the modern asteroid belt and terrestrial planet region (e.g. Bottke et al., 2006). These radiation forces were probably also an important factor during accretion, though how they competed with gas drag has not been studied. No models have included this effect that is ...
... km-sized and smaller objects in the modern asteroid belt and terrestrial planet region (e.g. Bottke et al., 2006). These radiation forces were probably also an important factor during accretion, though how they competed with gas drag has not been studied. No models have included this effect that is ...
Life Cycle of a Star - Intervention Worksheet
... After a low or medium mass or star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a planetary nebula. The blue-white hot core of the star that is left behind cools and becomes a white dwarf. The white dwarf eventually runs out of fuel and dies ...
... After a low or medium mass or star has become a red giant the outer parts grow bigger and drift into space, forming a cloud of gas called a planetary nebula. The blue-white hot core of the star that is left behind cools and becomes a white dwarf. The white dwarf eventually runs out of fuel and dies ...
Chapter 2
... Sirius looks brighter than Alpha Centauri, but we know that Alpha Centauri is closer because its apparent position in the sky shifts by a larger amount as Earth orbits the Sun. ...
... Sirius looks brighter than Alpha Centauri, but we know that Alpha Centauri is closer because its apparent position in the sky shifts by a larger amount as Earth orbits the Sun. ...
PHYS3380_102815_bw - The University of Texas at Dallas
... high mass stars are generally confined to a very small region, much smaller than the size of the convective core. - conditions under which a region of a star is unstable to convection is expresses by the Schwarzschild criterion: ...
... high mass stars are generally confined to a very small region, much smaller than the size of the convective core. - conditions under which a region of a star is unstable to convection is expresses by the Schwarzschild criterion: ...
Neutron Stars
... The energy source for the repeated gamma-ray bursts (SGRs) from some neutron stars is what? A: fusion of hydrogen on the surface B: energy released by material accreting onto the surface. C: the result of reconfigurations of the strong magnetic fields ...
... The energy source for the repeated gamma-ray bursts (SGRs) from some neutron stars is what? A: fusion of hydrogen on the surface B: energy released by material accreting onto the surface. C: the result of reconfigurations of the strong magnetic fields ...
RTFS Test - 2017 BCS Cobra
... 69. What do you call a pair of stars orbiting around a common center of mass? 70. Review the spectral types of some of the main sequence stars in the table below: Which star is: Star Spectral Type mv Q1: Brightest in apparent A G2 V ...
... 69. What do you call a pair of stars orbiting around a common center of mass? 70. Review the spectral types of some of the main sequence stars in the table below: Which star is: Star Spectral Type mv Q1: Brightest in apparent A G2 V ...