Stars, Galaxies, and the Universe Section 1
... • In the Northern Hemisphere, the movement of these stars makes them appear to circle the North Star. ...
... • In the Northern Hemisphere, the movement of these stars makes them appear to circle the North Star. ...
ISP 205: Visions of the Universe Fall 2001 Professor: ER Capriotti
... glowing because they are hot, the one that emits the most light from each unit area of surface will also A. absorb light hitting it most efficiently. B. appear bluest. C. appear faintest. D. appear reddest. 47. The first double stars were discovered by A. Herschel B. Galileo C. Newton D. Copernicus ...
... glowing because they are hot, the one that emits the most light from each unit area of surface will also A. absorb light hitting it most efficiently. B. appear bluest. C. appear faintest. D. appear reddest. 47. The first double stars were discovered by A. Herschel B. Galileo C. Newton D. Copernicus ...
Student Worksheet - Indiana University Astronomy
... young stellar objects and planetary systems. Dust is formed in the stellar winds blowing from old, evolved stars, and is ejected into the interstellar medium. Passing supernova shocks and ultraviolet radiation affect the dust grains, which collect into dusty clouds where new stars can form. Cosmic d ...
... young stellar objects and planetary systems. Dust is formed in the stellar winds blowing from old, evolved stars, and is ejected into the interstellar medium. Passing supernova shocks and ultraviolet radiation affect the dust grains, which collect into dusty clouds where new stars can form. Cosmic d ...
PPT
... How massive are stars? • The overall range of stellar masses runs from 0.08 times the mass of the Sun to about 150 times the mass of the Sun. • Masses are only known for stars that form binary systems, but about half of all stars are in fact in binary systems! – 0.08 MSun is approximately 80 MJupit ...
... How massive are stars? • The overall range of stellar masses runs from 0.08 times the mass of the Sun to about 150 times the mass of the Sun. • Masses are only known for stars that form binary systems, but about half of all stars are in fact in binary systems! – 0.08 MSun is approximately 80 MJupit ...
Arcturus and Pollux
... Castor was born by King of Sparta, Pollux by Zeus. Castor died, Pollux wanted to join him in Hades, so Zeus was sympathetic and placed both in the sky. • 17th Brightest star in the sky • 33.7 light years • “bright star” w/ luminosity 32 times that of the sun. • The brightest star in the sky with a k ...
... Castor was born by King of Sparta, Pollux by Zeus. Castor died, Pollux wanted to join him in Hades, so Zeus was sympathetic and placed both in the sky. • 17th Brightest star in the sky • 33.7 light years • “bright star” w/ luminosity 32 times that of the sun. • The brightest star in the sky with a k ...
Star Show FACILITATOR NOTES
... constellation Orion) have rather distinctive color tints. Astronomers typically measure color either using a spectrometer or by taking a pair of photographs using different colored filters and either method yields much clearer distinctions than those available to the naked eye. Students may be famil ...
... constellation Orion) have rather distinctive color tints. Astronomers typically measure color either using a spectrometer or by taking a pair of photographs using different colored filters and either method yields much clearer distinctions than those available to the naked eye. Students may be famil ...
Astrophysics
... • Hubble found (using Cepheids) that certain 'nebulae' were not dust clouds, as had been thought, but distant galaxies. He used Cepheid variables in the nebulae to show that they were much further away than any stars in the Milky Way. (Cepheids are bright stars with a predictable luminosity-period r ...
... • Hubble found (using Cepheids) that certain 'nebulae' were not dust clouds, as had been thought, but distant galaxies. He used Cepheid variables in the nebulae to show that they were much further away than any stars in the Milky Way. (Cepheids are bright stars with a predictable luminosity-period r ...
The Stellar Cycle
... What holds the white dwarf from collapsing? • The resulting outward pressure which keeps the electrons apart is called electron degeneracy pressure – this is what balances the weight. • Only if more energy drives the electrons into higher energy states, can the density increase. • Adding mass can d ...
... What holds the white dwarf from collapsing? • The resulting outward pressure which keeps the electrons apart is called electron degeneracy pressure – this is what balances the weight. • Only if more energy drives the electrons into higher energy states, can the density increase. • Adding mass can d ...
X-ray Astronomy
... (red) from the Spitzer Space Telescope. The Sombrero Galaxy is about 28 million light-years away, near the southern edge of the extensive Virgo cluster of galaxies. ...
... (red) from the Spitzer Space Telescope. The Sombrero Galaxy is about 28 million light-years away, near the southern edge of the extensive Virgo cluster of galaxies. ...
Part 1
... Procyon (parallax angle = 0.29”) Ross 780 (parallax angle = 0.21”) Regulus (parallax angle = 0.04”) Sirius (parallax angle = 0.38”) ...
... Procyon (parallax angle = 0.29”) Ross 780 (parallax angle = 0.21”) Regulus (parallax angle = 0.04”) Sirius (parallax angle = 0.38”) ...
Astronomy (stars, galaxies and the Universe)
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
... All stars are created from the gases in a nebula When the contracting gas and dust from a nebula become so dense and hot that nuclear fusion begins, the protostar begins to shine When a star begins to run out of fuel, its core shrinks and its outer portion expands The evolutionary path of a star dep ...
Last time: looked at proton-proton chain to convert Hydrogen into
... once there is an overdense region of matter it has a run-away effect and everything collapses down into a disk due to gravity. the angular momentum of the original star forming (b) cloud builds with time forming a disk (c) the angular momentum of the star forming cloud is constant with time and so a ...
... once there is an overdense region of matter it has a run-away effect and everything collapses down into a disk due to gravity. the angular momentum of the original star forming (b) cloud builds with time forming a disk (c) the angular momentum of the star forming cloud is constant with time and so a ...
Chapter 9 “The Family of Stars “
... The Astronomer’s Method 2. What is parallax? Apparent change in the position of an object due to change in location of an astronomer. 3. The farther away an object is, the ___________ the parallax, while the closer, the _____________ the parallax. Smaller; larger 4. What unit is used to express para ...
... The Astronomer’s Method 2. What is parallax? Apparent change in the position of an object due to change in location of an astronomer. 3. The farther away an object is, the ___________ the parallax, while the closer, the _____________ the parallax. Smaller; larger 4. What unit is used to express para ...
lecture12
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
... A classification of the stellar black body For historical reasons, astronomers classify the temperatures of stars on a scale defined by spectral types, called O B A F G K M, ranging from the hottest (type O) to the coolest (type M) stars. ...
a2Lec115
... Units of Distance: Use mks system: length=meter, mass =kgm, time=sec Astronomical Unit (AU): Distance from the earth to the sun = semi-major axis of the orbit of Earth around Sun 1 AU = d(sun) = 1.5 x 1011 m Parsec (PC): Distance at which 1 AU subtends Angle of 1 second 1 pc (parsec) = 206625 AU = ...
... Units of Distance: Use mks system: length=meter, mass =kgm, time=sec Astronomical Unit (AU): Distance from the earth to the sun = semi-major axis of the orbit of Earth around Sun 1 AU = d(sun) = 1.5 x 1011 m Parsec (PC): Distance at which 1 AU subtends Angle of 1 second 1 pc (parsec) = 206625 AU = ...
Astronomy_Syllabus
... Main Lesson Book: You are expected to make a main lesson book that faithfully represents the concepts covered in class. An outline of the major topics is on the back of this page, but is only an outline, and does not reflect all of the things that should go into your book. Your main lesson book shou ...
... Main Lesson Book: You are expected to make a main lesson book that faithfully represents the concepts covered in class. An outline of the major topics is on the back of this page, but is only an outline, and does not reflect all of the things that should go into your book. Your main lesson book shou ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.