Lecture 13: The Stars –
... One of the latest discovered Exoplanets: (reported September 29, 2010) ...
... One of the latest discovered Exoplanets: (reported September 29, 2010) ...
Here
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
Foundations III The Stars
... Gliese 581g is the first planet found to lie squarely in its star’s habitable zone, where the conditions are right for liquid water. The new planet is about three times the mass of Earth, which indicates it is probably rocky and has enough surface gravity to sustain a stable atmosphere. ...
... Gliese 581g is the first planet found to lie squarely in its star’s habitable zone, where the conditions are right for liquid water. The new planet is about three times the mass of Earth, which indicates it is probably rocky and has enough surface gravity to sustain a stable atmosphere. ...
Prime Focus - Tri-City Astronomy Club
... Without conclusively identifying and characterizing the foreground star, however, astronomers have had a difficult time determining the properties of the accompanying planet. Using Hubble and the Keck Observatory, two teams of astronomers have now found that the system consists of a Uranus-sized pl ...
... Without conclusively identifying and characterizing the foreground star, however, astronomers have had a difficult time determining the properties of the accompanying planet. Using Hubble and the Keck Observatory, two teams of astronomers have now found that the system consists of a Uranus-sized pl ...
A Study of the Spectroscopic Variability of Select RV Tauri... Charles Kurgatt , Donald K. Walter , Steve Howell
... RV Tauri and Semi-Regular stars are examples of variable stars, a star that is unable to maintain a steady apparent brightness. These changes in brightness may have many causes such as eclipses, stellar rotation, and pulsation. The two types studied here vary in brightness due to pulsations in the p ...
... RV Tauri and Semi-Regular stars are examples of variable stars, a star that is unable to maintain a steady apparent brightness. These changes in brightness may have many causes such as eclipses, stellar rotation, and pulsation. The two types studied here vary in brightness due to pulsations in the p ...
Distance Ladder
... •A standard candle is any object that is consistently the same luminosity •Like 100 W light bulbs, or G2 main sequence stars How the technique works: •Figure out how luminous your standard candles are •If you know distance d and brightness B, you can figure this out from: L = 4d2B •To find the dist ...
... •A standard candle is any object that is consistently the same luminosity •Like 100 W light bulbs, or G2 main sequence stars How the technique works: •Figure out how luminous your standard candles are •If you know distance d and brightness B, you can figure this out from: L = 4d2B •To find the dist ...
Stellar Evolution Chapter 12
... 16. How do star clusters confirm that stars are evolving? a. The H-R diagram of a star cluster is missing the upper part of the main sequence. b. The H-R diagram of a star cluster is missing the lower part of the main sequence. c. The relative motion of stars in a cluster can be estimated by ...
... 16. How do star clusters confirm that stars are evolving? a. The H-R diagram of a star cluster is missing the upper part of the main sequence. b. The H-R diagram of a star cluster is missing the lower part of the main sequence. c. The relative motion of stars in a cluster can be estimated by ...
N (North) Equator Latitude and Declination
... First, some definitions. The observer’s zenith is the point directly over the observer’s head. The observer’s meridian is an imaginary arc in the sky which runs north-south (so passes over the poles) and through the observer’s zenith. The meridian lies directly over the observer’s great circle of lo ...
... First, some definitions. The observer’s zenith is the point directly over the observer’s head. The observer’s meridian is an imaginary arc in the sky which runs north-south (so passes over the poles) and through the observer’s zenith. The meridian lies directly over the observer’s great circle of lo ...
File
... calcium in your bones, and the iron in your blood are just a few examples of the elements produced long ago by stars and their explosions. (Other examples are the silver, gold, and platinum in jewelry—but these are not vital for the existence of life!) ...
... calcium in your bones, and the iron in your blood are just a few examples of the elements produced long ago by stars and their explosions. (Other examples are the silver, gold, and platinum in jewelry—but these are not vital for the existence of life!) ...
Lecture notes -- pdf file - University of Iowa Astrophysics
... The distances to the stars are truly enormous • If the distance between the Earth and Sun were shrunk to 1 cm (0.4 inches), Alpha Centauri would be 2.75 km (1.7 miles) away ...
... The distances to the stars are truly enormous • If the distance between the Earth and Sun were shrunk to 1 cm (0.4 inches), Alpha Centauri would be 2.75 km (1.7 miles) away ...
Document
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
Here
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
Stars and Constellations
... combined light appears as a faded band if the sky is very dark. With a telescope you can see many more stars. People in ancient times thought that all stars were part of the Milky Way. Today, we know of many other galaxies similar to the Milky Way. To study the Milky Way as a whole is difficult for ...
... combined light appears as a faded band if the sky is very dark. With a telescope you can see many more stars. People in ancient times thought that all stars were part of the Milky Way. Today, we know of many other galaxies similar to the Milky Way. To study the Milky Way as a whole is difficult for ...
1705 Star Charts
... to be seen from more northerly places in ancient times. The fainter Pointer and the three bluish-white stars of the Crux are all super-bright stars hundreds of light years away. Alpha Centauri is just 4.3 light years* away and the reddish top star of Crux is 90 light years from us. Omega Centauri, a ...
... to be seen from more northerly places in ancient times. The fainter Pointer and the three bluish-white stars of the Crux are all super-bright stars hundreds of light years away. Alpha Centauri is just 4.3 light years* away and the reddish top star of Crux is 90 light years from us. Omega Centauri, a ...
Powerpoint file
... disk left behind after the supernova explosion (more likely) Debris disk found around another pulsar fits this picture! ...
... disk left behind after the supernova explosion (more likely) Debris disk found around another pulsar fits this picture! ...
Planetary Configurations
... • It is thought that the speed of light, c, is fixed at 300,000 km/s every place and for all time. • At 4 LY distance, it takes sunlight 4 years to reach nearest star. Light takes 150,000 years to traverse the entire Milky Way. • Traveling at 1% of c, it would take 400 years to reach nearest star. • ...
... • It is thought that the speed of light, c, is fixed at 300,000 km/s every place and for all time. • At 4 LY distance, it takes sunlight 4 years to reach nearest star. Light takes 150,000 years to traverse the entire Milky Way. • Traveling at 1% of c, it would take 400 years to reach nearest star. • ...
What is a star?
... What is a star? • Stars have different sizes, ranging from 1/100 the size of the sun to 1,000 times the size of the sun. • Two or more stars may be bound together by gravity, which causes them to orbit each other. • Three or more stars that are bound by gravity are called multiple stars or multiple ...
... What is a star? • Stars have different sizes, ranging from 1/100 the size of the sun to 1,000 times the size of the sun. • Two or more stars may be bound together by gravity, which causes them to orbit each other. • Three or more stars that are bound by gravity are called multiple stars or multiple ...
2010_02_04 LP08 Our Galactic Home
... Lasers (reflecting off the Moon) Radar (reflecting off the Moon or Venus) Heliocentric parallax (Earth’s ORBIT as baseline) Moving clusters (Pleiades) H-R Diagram R R Lyrae variable stars (M=0.5) Cepheid variable stars Brightest supergiants (M=-8) “Normal” novae Globular clusters (brightest at M=-10 ...
... Lasers (reflecting off the Moon) Radar (reflecting off the Moon or Venus) Heliocentric parallax (Earth’s ORBIT as baseline) Moving clusters (Pleiades) H-R Diagram R R Lyrae variable stars (M=0.5) Cepheid variable stars Brightest supergiants (M=-8) “Normal” novae Globular clusters (brightest at M=-10 ...
What is a Star?
... Our Sun • Apparent magnitude of our sun is 26.4, because it is so close. – If it were further from us, it would look much dimmer. ...
... Our Sun • Apparent magnitude of our sun is 26.4, because it is so close. – If it were further from us, it would look much dimmer. ...
15-1 Notes - westscidept
... Scientists know that the _______ of star indicates the star’s temperature. _____ stars are the coolest, and _______ stars are the hottest. When you look at white light through a prism, you see a rainbow of colors called a ___________. Astronomers use a ________________ to separate a star’s light int ...
... Scientists know that the _______ of star indicates the star’s temperature. _____ stars are the coolest, and _______ stars are the hottest. When you look at white light through a prism, you see a rainbow of colors called a ___________. Astronomers use a ________________ to separate a star’s light int ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.