Properties of Stars
... 10. Our Sun has a temperature of 5800 K (which is 6073°Celsius) and an absolute magnitude of +4.7. Use a “” symbol to plot the location of the Sun on your diagram. To which group does the Sun belong? (label it “Sun” on your graph also) 11. Compare the absolute magnitude and temperature of the Sun w ...
... 10. Our Sun has a temperature of 5800 K (which is 6073°Celsius) and an absolute magnitude of +4.7. Use a “” symbol to plot the location of the Sun on your diagram. To which group does the Sun belong? (label it “Sun” on your graph also) 11. Compare the absolute magnitude and temperature of the Sun w ...
ecliptic
... • Assumption is that the position of the Sun and planets at the exact moment of your birth determines what will happen in your life. • Horoscopes: very general statements that can apply to anybody. What is the probability that 1/12 of the world’s people are having the same kind of day? • Different s ...
... • Assumption is that the position of the Sun and planets at the exact moment of your birth determines what will happen in your life. • Horoscopes: very general statements that can apply to anybody. What is the probability that 1/12 of the world’s people are having the same kind of day? • Different s ...
Test 3
... b) with respect to the sun. It is more than 24 hours long. c) with respect to the stars. It is less than 24 hours long. d) with respect to the stars. It is more than 24 hours long. A sidereal day is when the earth rotates 360 degrees a) with respect to the sun. It is less than 24 hours long. b) with ...
... b) with respect to the sun. It is more than 24 hours long. c) with respect to the stars. It is less than 24 hours long. d) with respect to the stars. It is more than 24 hours long. A sidereal day is when the earth rotates 360 degrees a) with respect to the sun. It is less than 24 hours long. b) with ...
ABSOLUTE AND APPARENT MAGNITUDES
... As a general (not vastly accurate, but close enough) rule of thumb, the highest apparent magnitude that the naked eye can see under ideal viewing conditions is about +6. Objects can cast visible shadows around an apparent magnitude -4 (you’d need a very dark night to see them though - they’d get pr ...
... As a general (not vastly accurate, but close enough) rule of thumb, the highest apparent magnitude that the naked eye can see under ideal viewing conditions is about +6. Objects can cast visible shadows around an apparent magnitude -4 (you’d need a very dark night to see them though - they’d get pr ...
ASTR220 Collisions in Space
... Bright and variable X-ray emission. Found high-mass star at approximate location of X-ray source. Found that star has very large velocity shifts (40 m/s in each direction)… … must be something very massive swinging it around! ...
... Bright and variable X-ray emission. Found high-mass star at approximate location of X-ray source. Found that star has very large velocity shifts (40 m/s in each direction)… … must be something very massive swinging it around! ...
answers
... 6) The image above left shows a portion of the Hubble Deep Field image, which shows some of the most distant objects ever found. All of the objects are galaxies of stars except for E, which is a single nearby star. Which object is more luminous? A) E B) F C) they are about the same B) The two object ...
... 6) The image above left shows a portion of the Hubble Deep Field image, which shows some of the most distant objects ever found. All of the objects are galaxies of stars except for E, which is a single nearby star. Which object is more luminous? A) E B) F C) they are about the same B) The two object ...
HW11
... difficult to apply these concepts to the material for this exam. Review your last exam and be sure that you understand why certain answers are correct, and others are wrong. New material for this Exam ...
... difficult to apply these concepts to the material for this exam. Review your last exam and be sure that you understand why certain answers are correct, and others are wrong. New material for this Exam ...
Final Exam Review
... to the same position with respect to the stars. 2. the time it takes to orbit once around Earth, back to the same lunar phase. 3. the time it takes to orbit once around the sun. 4. the time it takes to orbit once around a glass of ...
... to the same position with respect to the stars. 2. the time it takes to orbit once around Earth, back to the same lunar phase. 3. the time it takes to orbit once around the sun. 4. the time it takes to orbit once around a glass of ...
reach for the stars
... of this “critical mass”? (2 pts) Chandrasekhar Limit 18. What type of supernova results from a white dwarf gaining too much mass and exploding? (1 pt) Type Ia 19. Vega, Altair, and Regulus are flattened at the poles and bulging at the equator. What causes this? (2 pts) Rapid rotation [high spin spee ...
... of this “critical mass”? (2 pts) Chandrasekhar Limit 18. What type of supernova results from a white dwarf gaining too much mass and exploding? (1 pt) Type Ia 19. Vega, Altair, and Regulus are flattened at the poles and bulging at the equator. What causes this? (2 pts) Rapid rotation [high spin spee ...
formation2
... stars orbit around the galaxy moving in and out of spiral arms • From the HR diagram, by far the most luminous stars are the O-type stars. Their luminosity can be 100,000 times the Sun’s. • Why is the spiral structure in galaxies so noticeable, even at great distances? ...
... stars orbit around the galaxy moving in and out of spiral arms • From the HR diagram, by far the most luminous stars are the O-type stars. Their luminosity can be 100,000 times the Sun’s. • Why is the spiral structure in galaxies so noticeable, even at great distances? ...
Assignment on Principles of Visualization
... The helium at the center of the star continues to increase until a helium core is formed. Nuclear reaction then begins to spread outward. As the helium core grows heavier, the core's temperature also increases, and the outer layers begin to expand until the star becomes a massive red star known as a ...
... The helium at the center of the star continues to increase until a helium core is formed. Nuclear reaction then begins to spread outward. As the helium core grows heavier, the core's temperature also increases, and the outer layers begin to expand until the star becomes a massive red star known as a ...
A Star is
... • Stars vary in size and mass, and a star’s brightness is related to its size • Big stars appear brighter than smaller stars of the same temperature • Our sun is considered a medium-sized star • Most stars visible from Earth are medium-sized stars. • Many stars also have about the same mass as the s ...
... • Stars vary in size and mass, and a star’s brightness is related to its size • Big stars appear brighter than smaller stars of the same temperature • Our sun is considered a medium-sized star • Most stars visible from Earth are medium-sized stars. • Many stars also have about the same mass as the s ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... The critical density of the Universe is (a) the minimum density of baryonic matter the Universe may have if it is open and infinite. (b) the maximum density of baryonic matter the Universe may have if it is open and infinite. (c) the minimum density of baryonic matter the Universe may have to allow ...
... The critical density of the Universe is (a) the minimum density of baryonic matter the Universe may have if it is open and infinite. (b) the maximum density of baryonic matter the Universe may have if it is open and infinite. (c) the minimum density of baryonic matter the Universe may have to allow ...
Universe Now - Course Pages of Physics Department
... (spectroscopic binaries), photometry (eclipsing or photometric binaries), or other methods; not visually seen as separate stars. ...
... (spectroscopic binaries), photometry (eclipsing or photometric binaries), or other methods; not visually seen as separate stars. ...
Kepler 452b:Potentially Earth like planet
... 60 percent bigger than the earth and lies within the Goldilocks zone(Habitable zone with optimum temperature to support life) of its parent star.It’s mass is ...
... 60 percent bigger than the earth and lies within the Goldilocks zone(Habitable zone with optimum temperature to support life) of its parent star.It’s mass is ...
Spectroscopic parallax
... The relationship between a Cepheid variable's luminosity and variability period is quite precise, and has been used as a standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by Henrietta Swan Leavitt. She measured the brightnes ...
... The relationship between a Cepheid variable's luminosity and variability period is quite precise, and has been used as a standard candle (astronomical object that has a know luminosity) for almost a century. This connection was discovered in 1912 by Henrietta Swan Leavitt. She measured the brightnes ...
Take Home #2 Complete the following on your own paper. Do not
... C. How are heavy elements created in stars? B. How does a massive star explode? D. How many elements are heavier than iron? 18) The nebular hypothesis states that the solar system was created by a rotating cloud of matter flattened to a disk by gravity. Pierre Simon de Laplace built this hypothesis ...
... C. How are heavy elements created in stars? B. How does a massive star explode? D. How many elements are heavier than iron? 18) The nebular hypothesis states that the solar system was created by a rotating cloud of matter flattened to a disk by gravity. Pierre Simon de Laplace built this hypothesis ...
Stellar Evolution
... How does the pressure from fusion and hot gas interact with the force of gravity to maintain a star’s stability? The forces balance each other and keep the star in equilibrium. As gravity increases the pressure on the matter within a star, the rate of fusion increases. This increase in fusion causes ...
... How does the pressure from fusion and hot gas interact with the force of gravity to maintain a star’s stability? The forces balance each other and keep the star in equilibrium. As gravity increases the pressure on the matter within a star, the rate of fusion increases. This increase in fusion causes ...
Stars
... • Luminosity - A star produces light – the total amount of energy that a star puts out as light each second is called its Luminosity. • Flux - If we have a light detector (eye, camera, telescope) we can measure the light produced by the star – the total amount of energy intercepted by the detector d ...
... • Luminosity - A star produces light – the total amount of energy that a star puts out as light each second is called its Luminosity. • Flux - If we have a light detector (eye, camera, telescope) we can measure the light produced by the star – the total amount of energy intercepted by the detector d ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.