Astronomy 102, Spring 2003 Solutions to Review Problems
... size R. You can get L by solving F = 4πd 2 , where F is the flux you measure— but you then also need d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the o ...
... size R. You can get L by solving F = 4πd 2 , where F is the flux you measure— but you then also need d, the distance, in order to calculate L. For mass, if it’s a binary star, you can measure the period of the orbit without knowing the distance, but again to get the physical semi-major axis of the o ...
Chapter 18 The Bizarre Stellar Graveyard What is a white dwarf
... – A black hole is a massive object whose radius is so small that the escape velocity exceeds the speed of light ...
... – A black hole is a massive object whose radius is so small that the escape velocity exceeds the speed of light ...
Star in a Box
... •Temperature along the horizontal axis (measured in Kelvin) The stars Vega and Sirius are brighter than the Sun, and also hotter. Where would you put them? Where would you mark the Sun on the plot? ...
... •Temperature along the horizontal axis (measured in Kelvin) The stars Vega and Sirius are brighter than the Sun, and also hotter. Where would you put them? Where would you mark the Sun on the plot? ...
Chapter 17 Measuring the Stars
... Measuring Stellar Masses in Binary Stars In order to measure stellar masses in a binary star, the period and semimajor axis of the orbit must be measured. Once this is done, Kepler’s third law gives the sum of the masses of the two stars. Then the relative speeds of the two stars can be measured usi ...
... Measuring Stellar Masses in Binary Stars In order to measure stellar masses in a binary star, the period and semimajor axis of the orbit must be measured. Once this is done, Kepler’s third law gives the sum of the masses of the two stars. Then the relative speeds of the two stars can be measured usi ...
"Stars" pdf file
... To discover the system which is able to heat so much gas and for such a long time we have to dive into the microscopic world of atomic nuclei. Atoms have a precise structure: they have a nucleus formed by particles called protons and neutrons, around which orbits a cloud of smaller particles called ...
... To discover the system which is able to heat so much gas and for such a long time we have to dive into the microscopic world of atomic nuclei. Atoms have a precise structure: they have a nucleus formed by particles called protons and neutrons, around which orbits a cloud of smaller particles called ...
Astronomy 112: Physics of Stars Problem set 1 solutions 1
... we want to calculate the masses of the two stars, M1 and M2 . For simplicity we will assume that the orbit is circular, with semi-major axis a. The orbital plane of the binary is inclined at an unknown angle i relative to the plane of the sky, where i = 0 corresponds to an orbit that is perfectly fa ...
... we want to calculate the masses of the two stars, M1 and M2 . For simplicity we will assume that the orbit is circular, with semi-major axis a. The orbital plane of the binary is inclined at an unknown angle i relative to the plane of the sky, where i = 0 corresponds to an orbit that is perfectly fa ...
Section 1.1 Version 1 - Columbus State University
... 7. The apparent magnitude m of a star is a measure of its apparent brightness as the star is viewed from Earth. Larger magnitudes correspond to dimmer stars, and magnitudes can be negative, indicating a very bright star. For example, the brightest star in the night sky is Sirius, which has an appar ...
... 7. The apparent magnitude m of a star is a measure of its apparent brightness as the star is viewed from Earth. Larger magnitudes correspond to dimmer stars, and magnitudes can be negative, indicating a very bright star. For example, the brightest star in the night sky is Sirius, which has an appar ...
Lect15-3-23-11-stars..
... 2. Second, as the gas cloud continues to collapse, radiating into space essentially all of the heat generated from gravitational potential energy release, its surface temperature warms only slightly. However, as the collapse proceeds, the surface area of the cloud is diminished,, so that its luminos ...
... 2. Second, as the gas cloud continues to collapse, radiating into space essentially all of the heat generated from gravitational potential energy release, its surface temperature warms only slightly. However, as the collapse proceeds, the surface area of the cloud is diminished,, so that its luminos ...
AST1001.ch13
... According to conservation of angular momentum, what would happen if a star orbiting in a direction opposite the neutron’s star rotation fell onto a neutron star? A. The neutron star’s rotation would speed up. B. The neutron star’s rotation would slow down. C. Nothing, the directions would cancel eac ...
... According to conservation of angular momentum, what would happen if a star orbiting in a direction opposite the neutron’s star rotation fell onto a neutron star? A. The neutron star’s rotation would speed up. B. The neutron star’s rotation would slow down. C. Nothing, the directions would cancel eac ...
Copyright 1995 Scientific American, Inc.
... produces as it strips the outer ORBITAL PRECESSION, the rotation of the major axis of an Albert Einstein himself comatmosphere from its compan- elliptical orbit, results from relativistic perturbations of puted the precession of Merion. Eventually the second star the motion of fast-moving bodies in ...
... produces as it strips the outer ORBITAL PRECESSION, the rotation of the major axis of an Albert Einstein himself comatmosphere from its compan- elliptical orbit, results from relativistic perturbations of puted the precession of Merion. Eventually the second star the motion of fast-moving bodies in ...
AST1001.ch13
... According to conservation of angular momentum, what would happen if a star orbiting in a direction opposite the neutron’s star rotation fell onto a neutron star? A. The neutron star’s rotation would speed up. B. The neutron star’s rotation would slow down. C. Nothing, the directions would cancel eac ...
... According to conservation of angular momentum, what would happen if a star orbiting in a direction opposite the neutron’s star rotation fell onto a neutron star? A. The neutron star’s rotation would speed up. B. The neutron star’s rotation would slow down. C. Nothing, the directions would cancel eac ...
PowerPoint slides
... Iron spectral lines can be analyzed using the gravitational red-shift to determine the gravitational strength and from this, how compact the object is. There is matter orbiting as close as 160 km - only six times bigger than the Schwarzschild radius. ...
... Iron spectral lines can be analyzed using the gravitational red-shift to determine the gravitational strength and from this, how compact the object is. There is matter orbiting as close as 160 km - only six times bigger than the Schwarzschild radius. ...
Betelgeuse
... Red supergiant star Right shoulder of Orion constellation derived from the Arabic word bat aldshauzâ, which means “the giant’s shoulder.” or “armpit” 8.5 million yrs old (Sun is 4.6 billion yrs old) 600 light years away 1000 times bigger than the Sun ...
... Red supergiant star Right shoulder of Orion constellation derived from the Arabic word bat aldshauzâ, which means “the giant’s shoulder.” or “armpit” 8.5 million yrs old (Sun is 4.6 billion yrs old) 600 light years away 1000 times bigger than the Sun ...
HR Diagram - TeacherWeb
... In the early 1900s, astronomers identified many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. Using the H-R Diagram Gizmo™, you will discover how some of these characteristics are related. Start by moving your cursor over the stars in the Star collect ...
... In the early 1900s, astronomers identified many star characteristics such as color, size, temperature, and luminosity—or how bright a star is. Using the H-R Diagram Gizmo™, you will discover how some of these characteristics are related. Start by moving your cursor over the stars in the Star collect ...
Classifying the Stars
... Classifying the Stars Brightness Stars give off different amounts of light depending on their size and temperature. ...
... Classifying the Stars Brightness Stars give off different amounts of light depending on their size and temperature. ...
DSLR Photometry
... Des says in theory it is advisable to also construct master flat field frames in order to remove the effects of the edge distortions of lens. Des has found, however, that the field of view of a DSLR is so wide that a flat field is not required, if you are using high quality lenses, provided the targ ...
... Des says in theory it is advisable to also construct master flat field frames in order to remove the effects of the edge distortions of lens. Des has found, however, that the field of view of a DSLR is so wide that a flat field is not required, if you are using high quality lenses, provided the targ ...
The cosmic distance scale
... individual Cepheids can be resolved as far away as the Virgo cluster of galaxies. Cepheids have periods from a few to about 70 days and this depends on their absolute magnitudes. In Table 1 HST observations of six Cepheids are listed. They were observed at 12 epochs (times) in order to find their pe ...
... individual Cepheids can be resolved as far away as the Virgo cluster of galaxies. Cepheids have periods from a few to about 70 days and this depends on their absolute magnitudes. In Table 1 HST observations of six Cepheids are listed. They were observed at 12 epochs (times) in order to find their pe ...
Lecture 10-11 - OSU Astronomy
... interpretation of stellar spectra. • Based on the then new atomic physics. ...
... interpretation of stellar spectra. • Based on the then new atomic physics. ...
Physics@Brock - Brock University
... 65. Which of the following types of radiation from outer space cannot be detected in a ground-based observatory? (a) Ultraviolet. (b) Visible light. (c) X-ray. (d) Radio. 66. The radius of a star can be determined from its (a) luminosity and distance. (b) luminosity and surface temperature. (c) surf ...
... 65. Which of the following types of radiation from outer space cannot be detected in a ground-based observatory? (a) Ultraviolet. (b) Visible light. (c) X-ray. (d) Radio. 66. The radius of a star can be determined from its (a) luminosity and distance. (b) luminosity and surface temperature. (c) surf ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.