powerpoint - Physics @ IUPUI
... Why variable stars are important • Variable stars have a relationship between their period of pulsation and their absolute brightness. • The longer the period, the bigger the star is, and the brighter it is (sort of like a bigger bell has a larger period of vibration). • This allows us to measure d ...
... Why variable stars are important • Variable stars have a relationship between their period of pulsation and their absolute brightness. • The longer the period, the bigger the star is, and the brighter it is (sort of like a bigger bell has a larger period of vibration). • This allows us to measure d ...
6. 1 Star Distances 6. 2 Apparent Brightness, Intrinsic Brightness
... and supergiants, however, are much larger and lie above the main sequence in the diagram. Some of the white dwarfs are hot stars, but they fall below the main sequence because they are so small. The large size of the giants and supergiants means their atmospheres have low densities. Giant stars, lum ...
... and supergiants, however, are much larger and lie above the main sequence in the diagram. Some of the white dwarfs are hot stars, but they fall below the main sequence because they are so small. The large size of the giants and supergiants means their atmospheres have low densities. Giant stars, lum ...
Star Formation
... • Interstellar gas, like the sun, is 74% hydrogen and 25% helium. • Interstellar dust, like clouds in the gas giants, are molecular carbon monoxide, ammonia, and water. • Traces of all other elements are present. ...
... • Interstellar gas, like the sun, is 74% hydrogen and 25% helium. • Interstellar dust, like clouds in the gas giants, are molecular carbon monoxide, ammonia, and water. • Traces of all other elements are present. ...
Stars, Galaxies & Universe
... Classifying Stars • Stars are classified by size, temperature, and brightness. • Temperature of a star is indicated by color, hot stars are blue & cooler stars are red. • Apparent brightness is the brightness of a star as observed from earth. • Absolute magnitude is the brightness of a star observe ...
... Classifying Stars • Stars are classified by size, temperature, and brightness. • Temperature of a star is indicated by color, hot stars are blue & cooler stars are red. • Apparent brightness is the brightness of a star as observed from earth. • Absolute magnitude is the brightness of a star observe ...
ASTR 1050: Survey of Astronomy
... a. the period of the orbit. b. the inclination of the orbit. c. the relative sizes of the stars. d. the total masses of the stars. e. all of the above. f. none of the above. 25. A main sequence type A star has about twice the surface temperature of our sun (a type G star). Assuming the stars are abo ...
... a. the period of the orbit. b. the inclination of the orbit. c. the relative sizes of the stars. d. the total masses of the stars. e. all of the above. f. none of the above. 25. A main sequence type A star has about twice the surface temperature of our sun (a type G star). Assuming the stars are abo ...
s*t*a*r chart - Ontario Science Centre
... Jupiter begins retrograde motion, where its motion across the sky appears opposite to the direction of motion of the other planetary bodies, due to Jupiter being overtaken by the Earth ...
... Jupiter begins retrograde motion, where its motion across the sky appears opposite to the direction of motion of the other planetary bodies, due to Jupiter being overtaken by the Earth ...
Our Universe
... DAY! Most of the time we never notice them, but with improving technologies we are detecting more of them, and detecting them earlier. ...
... DAY! Most of the time we never notice them, but with improving technologies we are detecting more of them, and detecting them earlier. ...
Extra Credit
... Something disturbs the comet's orbit -- like the gravity of a passing star -- starting it on a long fall toward the Sun. As a comet approaches the Sun, some of its ice vaporizes, freeing particles of rock as well. This material forms a bright cloud around the comet. And some of the material is pushe ...
... Something disturbs the comet's orbit -- like the gravity of a passing star -- starting it on a long fall toward the Sun. As a comet approaches the Sun, some of its ice vaporizes, freeing particles of rock as well. This material forms a bright cloud around the comet. And some of the material is pushe ...
Pretty Pictures of the Cosmos
... with the Hubble Space Telescope, distant galaxies form a dramatic backdrop for disrupted spiral galaxy Arp 188, the Tadpole Galaxy. The cosmic Tadpole is a mere 420 million light-years distant toward the northern constellation Draco. Its eye-catching tail is about 280 thousand light-years long and f ...
... with the Hubble Space Telescope, distant galaxies form a dramatic backdrop for disrupted spiral galaxy Arp 188, the Tadpole Galaxy. The cosmic Tadpole is a mere 420 million light-years distant toward the northern constellation Draco. Its eye-catching tail is about 280 thousand light-years long and f ...
HR DIAGRAM ACTIVITY
... Analysis- use pages 627-628 to help you You can check your HR diagram at: http://deskarati.com/wp-content/uploads/2012/03/HertzsprungRussell-Diagram.jpg 1. Draw a circle around all the red giants on your graph and label this enclosed area Red Giants. 2. Draw a circle around all the white dwarfs and ...
... Analysis- use pages 627-628 to help you You can check your HR diagram at: http://deskarati.com/wp-content/uploads/2012/03/HertzsprungRussell-Diagram.jpg 1. Draw a circle around all the red giants on your graph and label this enclosed area Red Giants. 2. Draw a circle around all the white dwarfs and ...
Stellar Evolution (Powerpoint) 17
... fusion at once. What a star normally takes billions of years to burn, this star burns all at once. BIG explosion! ...
... fusion at once. What a star normally takes billions of years to burn, this star burns all at once. BIG explosion! ...
Was kann man von offenen Sternhaufen lernen?
... Definition of Star Clusters Star clusters are physically related groups of stars held together by mutual gravitational attraction. The number of all star clusters in the Milky Way is about 10 000 but only 3000 in catalogues. From these, about 170 Globular Clusters (“old”). ...
... Definition of Star Clusters Star clusters are physically related groups of stars held together by mutual gravitational attraction. The number of all star clusters in the Milky Way is about 10 000 but only 3000 in catalogues. From these, about 170 Globular Clusters (“old”). ...
Lecture10
... Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • Most stars belong to the main sequence. Other important classes are giants, supergiants and white dwarfs. • Spectral typing can be used to determine distances ...
... Colors and spectral types measure a star’s temperature The Hertzsprung-Russell (H-R) diagram is a graph plotting luminosity vs temperature • Most stars belong to the main sequence. Other important classes are giants, supergiants and white dwarfs. • Spectral typing can be used to determine distances ...
Notes on Precession in Astronomy
... Precession of the Northern Pole Star The star Polaris, which is currently close to the North Celestial Pole, appears to be stationary while other stars appear to rotate around it as the Earth turns daily on its axis [see Star Trail photograph.] However, the specific star that is the North Star varie ...
... Precession of the Northern Pole Star The star Polaris, which is currently close to the North Celestial Pole, appears to be stationary while other stars appear to rotate around it as the Earth turns daily on its axis [see Star Trail photograph.] However, the specific star that is the North Star varie ...
Astronomy 360 - Indiana State University
... independent of the observer's location and the time of the observation. This means that only one set of coordinates is required for each object, and that these same coordinates can be used by observers in different locations and at different times. The equatorial coordinate system is basically the p ...
... independent of the observer's location and the time of the observation. This means that only one set of coordinates is required for each object, and that these same coordinates can be used by observers in different locations and at different times. The equatorial coordinate system is basically the p ...
Stars - Trimble County Schools
... Distance to Stars • Distance to stars from Earth is measured in Light-years – Light-year = distance light travels in one year – Light-year = 9.461 x 1015 m ...
... Distance to Stars • Distance to stars from Earth is measured in Light-years – Light-year = distance light travels in one year – Light-year = 9.461 x 1015 m ...
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.