Section 7.3 - CPO Science
... extending millions of kilometers beyond the sun. Sunspots are areas of gas that are cooler than the ...
... extending millions of kilometers beyond the sun. Sunspots are areas of gas that are cooler than the ...
Surface Environments of the Planets o+ our Solar System
... characteristics of stars. You will also be asked to locate and identify some non-stellar objects. You may begin by trying the website at http://www.stellar-database.com/ ...
... characteristics of stars. You will also be asked to locate and identify some non-stellar objects. You may begin by trying the website at http://www.stellar-database.com/ ...
Astronomy Objectives
... Galaxies, spiral, irregular, and elliptical; the Milky Way Star clusters, open and globular Galaxy clusters Doppler effect and measuring motion of stars with their absorption spectra: Red-shift → going away from us; blue-shift → coming toward us The Hubble Law; state it and describe the evidence tha ...
... Galaxies, spiral, irregular, and elliptical; the Milky Way Star clusters, open and globular Galaxy clusters Doppler effect and measuring motion of stars with their absorption spectra: Red-shift → going away from us; blue-shift → coming toward us The Hubble Law; state it and describe the evidence tha ...
PARTS OF THE UNIVERSE
... HOW FAR AWAY ARE STARS? v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away ...
... HOW FAR AWAY ARE STARS? v Parallax: apparent shift in the position of an object when view from two different locations. v Parallax Example v Can be used to measure the distance of stars from Earth that are relatively close. v Proxima Centauri: closest star to earth v (4.3 light years away ...
Characteristics of Stars WS Questions 1-20
... Answer all of the following questions by rephrasing and using complete sentences. If you do not rephrase or use complete sentences, you will automatically lose half of the points ...
... Answer all of the following questions by rephrasing and using complete sentences. If you do not rephrase or use complete sentences, you will automatically lose half of the points ...
1 au d p = 1 au d
... Identical concept applies to galaxies (though typically measure numbers of galaxies per Mpc3 rather than per pc3). Can be hard to measure F(M): • for very low mass stars (M large), which are dim unless very close to the Sun • for massive stars (M small), which are rare Luminosity function is the bas ...
... Identical concept applies to galaxies (though typically measure numbers of galaxies per Mpc3 rather than per pc3). Can be hard to measure F(M): • for very low mass stars (M large), which are dim unless very close to the Sun • for massive stars (M small), which are rare Luminosity function is the bas ...
Stars are classified according to their color
... between the stars. • Distance that light travels in one year. Its about 9.5 million million kilometers. That is not a typo! ...
... between the stars. • Distance that light travels in one year. Its about 9.5 million million kilometers. That is not a typo! ...
Bright Stars and Faint Stars: the stellar magnitude system
... • Apparent magnitude is the brightness of an object as it appears to you • System due to Hipparchos (2nd century BC) • Nowadays system made more precise • Magnitude changes are “logarithmic”, each magnitude means factor of 2.512 in brightness • See Table 16.2 ...
... • Apparent magnitude is the brightness of an object as it appears to you • System due to Hipparchos (2nd century BC) • Nowadays system made more precise • Magnitude changes are “logarithmic”, each magnitude means factor of 2.512 in brightness • See Table 16.2 ...
Weekly Homework Questions #3, Sep. 14, 2010
... 1. How can one measure the mass of a star other than the Sun? (a) measuring the color of the star and using a color-mass relationship (b) the apparent magnitude of a star tells its mass (c) the gravitational force on a companion star in a double star (d) the mass of a star is determined by its locat ...
... 1. How can one measure the mass of a star other than the Sun? (a) measuring the color of the star and using a color-mass relationship (b) the apparent magnitude of a star tells its mass (c) the gravitational force on a companion star in a double star (d) the mass of a star is determined by its locat ...
Universe, Earth, and The Solar System Characteristics of Stars
... A white dwarf is only about the size of the Earth but as much as mass as the sun. A neutron star is the remains of high-mass stars. A black hole is an object with gravity so strong that not even light can escape. These are usually formed from the death of the most massive stars. ...
... A white dwarf is only about the size of the Earth but as much as mass as the sun. A neutron star is the remains of high-mass stars. A black hole is an object with gravity so strong that not even light can escape. These are usually formed from the death of the most massive stars. ...
of a Star
... The Size (Radius) of a Star We already know: flux increases with surface temperature (~ T4); hotter stars are brighter ...
... The Size (Radius) of a Star We already know: flux increases with surface temperature (~ T4); hotter stars are brighter ...
Chapter 25 Study guide Answer Key
... Compare and contrast apparent magnitude and absolute magnitude. Apparent is how bright a star appears to us and absolute is how bright it actually is. ...
... Compare and contrast apparent magnitude and absolute magnitude. Apparent is how bright a star appears to us and absolute is how bright it actually is. ...
The Family of Stars
... that a star would have if it were at a distance of 10 pc. If we know a star’s absolute magnitude, we can infer its distance by comparing absolute and apparent magnitudes. ...
... that a star would have if it were at a distance of 10 pc. If we know a star’s absolute magnitude, we can infer its distance by comparing absolute and apparent magnitudes. ...
Ch 28 Vocab cnp
... Chapter 28: Stars and Galaxies A halo of gases that is formed by the expelled layers of a star’s atmosphere The brightness of a star The measure of how bright a star would be if it were located 10 parsecs from Earth A group of millions, or even billions of stars held together by gravity A unit of me ...
... Chapter 28: Stars and Galaxies A halo of gases that is formed by the expelled layers of a star’s atmosphere The brightness of a star The measure of how bright a star would be if it were located 10 parsecs from Earth A group of millions, or even billions of stars held together by gravity A unit of me ...
here - University of Toronto Astronomy
... pressure and magnetic support push outwards. The balance between pressure and gravity is called hydrostatic equilibrium. Wien’s Law: W= 0.00290/T, where W is the wavelength at which the maximum amount of radiation comes from a body of temperature T. The law has implications for the prediction of inf ...
... pressure and magnetic support push outwards. The balance between pressure and gravity is called hydrostatic equilibrium. Wien’s Law: W= 0.00290/T, where W is the wavelength at which the maximum amount of radiation comes from a body of temperature T. The law has implications for the prediction of inf ...
How Close is our Nearest Neighbor
... When Shapley did his experiment, he had to measure the distances to globular clusters. To do this, he used Henrietta Leavitt’s discovery that certain variable stars obeyed a period-luminosity law so that their luminosities could be determined by measuring their periods of variation. These variable s ...
... When Shapley did his experiment, he had to measure the distances to globular clusters. To do this, he used Henrietta Leavitt’s discovery that certain variable stars obeyed a period-luminosity law so that their luminosities could be determined by measuring their periods of variation. These variable s ...
The cosmological distance ladder
... was 3.3% larger that the known mean distance. We determine the Earth-Sun distance. Our value was 6% larger than the true value. Rarely in science do we know the true value of something we are measuring. Otherwise it wouldn’t be called research! But we think it was a useful exercise to determine thes ...
... was 3.3% larger that the known mean distance. We determine the Earth-Sun distance. Our value was 6% larger than the true value. Rarely in science do we know the true value of something we are measuring. Otherwise it wouldn’t be called research! But we think it was a useful exercise to determine thes ...
Table Number: _____
... Using the distance modulus equation, d= 10 x 10(m-M)/5 , in the Introduction to calculate the distance to the cluster in parsecs. Then convert your answer to light years. Show all work in the ...
... Using the distance modulus equation, d= 10 x 10(m-M)/5 , in the Introduction to calculate the distance to the cluster in parsecs. Then convert your answer to light years. Show all work in the ...
PC2491 Examples 2
... An H1 cloud in the galactic plane at l=30o is observed to have a velocity relative to the local standard of rest of +80 km s-1. Assume the galactic rotation curve is flat with an amplitude of 220 km s-1 , and that Ro = 8.2 kpc and estimate the two possible distances to this cloud. (4) Estimate the m ...
... An H1 cloud in the galactic plane at l=30o is observed to have a velocity relative to the local standard of rest of +80 km s-1. Assume the galactic rotation curve is flat with an amplitude of 220 km s-1 , and that Ro = 8.2 kpc and estimate the two possible distances to this cloud. (4) Estimate the m ...
Open clusters
... Some special stars change their luminosity with a regular pattern. For example, Cepheid Variable stars have a relationship between their luminosity and the period of variation. this can be used to determine the distance to the star. ...
... Some special stars change their luminosity with a regular pattern. For example, Cepheid Variable stars have a relationship between their luminosity and the period of variation. this can be used to determine the distance to the star. ...
Stars - Denbigh Baptist Christian School
... Next closest star to Earth is Proxima Centauri. This is 270,000 times farther away than the distance from Sun to Earth. (4.3 light-years away) These types of distances cause us notation problems. The numbers are so large, that scientists introduced the new distance – light year. This is the distance ...
... Next closest star to Earth is Proxima Centauri. This is 270,000 times farther away than the distance from Sun to Earth. (4.3 light-years away) These types of distances cause us notation problems. The numbers are so large, that scientists introduced the new distance – light year. This is the distance ...
Cosmic distance ladder
The cosmic distance ladder (also known as the extragalactic distance scale) is the succession of methods by which astronomers determine the distances to celestial objects. A real direct distance measurement of an astronomical object is possible only for those objects that are ""close enough"" (within about a thousand parsecs) to Earth. The techniques for determining distances to more distant objects are all based on various measured correlations between methods that work at close distances and methods that work at larger distances. Several methods rely on a standard candle, which is an astronomical object that has a known luminosity.The ladder analogy arises because no one technique can measure distances at all ranges encountered in astronomy. Instead, one method can be used to measure nearby distances, a second can be used to measure nearby to intermediate distances, and so on. Each rung of the ladder provides information that can be used to determine the distances at the next higher rung.