Properties of Stars
... Sometimes the orbital plane is lined up so that the stars pass in front of each other as seen from the Earth. Each eclipse will cause the total light from the system to decrease. The amount of the decrease will depend on how much of each star is covered up (they can have different sizes) and on the ...
... Sometimes the orbital plane is lined up so that the stars pass in front of each other as seen from the Earth. Each eclipse will cause the total light from the system to decrease. The amount of the decrease will depend on how much of each star is covered up (they can have different sizes) and on the ...
h-r_diagram_online_lab
... Step 2: Convert the Spectral class types into numbers, such that O is 0, B is 1, A is 2, et cetera. Highlight the data in the column labeled “Type.” Go to the “Edit” menu and choose “Replace.” In the pop-up search window, type “O” in the “Replace” line and “0.” in the “Replace with” line. (Don’t for ...
... Step 2: Convert the Spectral class types into numbers, such that O is 0, B is 1, A is 2, et cetera. Highlight the data in the column labeled “Type.” Go to the “Edit” menu and choose “Replace.” In the pop-up search window, type “O” in the “Replace” line and “0.” in the “Replace with” line. (Don’t for ...
answer key
... 6. Describe some characteristics of red giant and white dwarf stars. A Red giant’s radius/diameter is between 10 and 100 times that of the Sun & surface temperature is relatively low, so that it glows with a red color. A white dwarf’s surface temperature is relatively high, so that the object glows ...
... 6. Describe some characteristics of red giant and white dwarf stars. A Red giant’s radius/diameter is between 10 and 100 times that of the Sun & surface temperature is relatively low, so that it glows with a red color. A white dwarf’s surface temperature is relatively high, so that the object glows ...
3 Nightly Motions
... If a star is far enough to the north: It will not rise or set at all! Its path will simply carry it around the North Star in approximately 24 hours, always staying above the horizon. ...
... If a star is far enough to the north: It will not rise or set at all! Its path will simply carry it around the North Star in approximately 24 hours, always staying above the horizon. ...
bbColors
... account the size of and distance to the star. So in truth, we are missing a term of R2 /r2 , where R is the radius of the star, and r is the distance to the star (the 4π’s cancel out, obviously). Since we are only measuring magnitude differences in each filter, this term can be separated (by logarit ...
... account the size of and distance to the star. So in truth, we are missing a term of R2 /r2 , where R is the radius of the star, and r is the distance to the star (the 4π’s cancel out, obviously). Since we are only measuring magnitude differences in each filter, this term can be separated (by logarit ...
Review Quiz No. 1
... Pollux, the second-brightest star in the constellation “Gemini” (poss. Form: “Geminorum”) is also called … ...
... Pollux, the second-brightest star in the constellation “Gemini” (poss. Form: “Geminorum”) is also called … ...
The origin, life, and death of stars
... becoming a planetary nebula (which actually has nothing to do with planets, but we didn’t know that in the 18th century when Herschel coined the term) The core collapses to form a White Dwarf ...
... becoming a planetary nebula (which actually has nothing to do with planets, but we didn’t know that in the 18th century when Herschel coined the term) The core collapses to form a White Dwarf ...
A Unique Environmental Studies Program
... The Pointers. Not very far from the Southern Cross you will see two quite bright stars. These are known as "The Pointers". They form part of the constellation of "The Centaur" and, being the two brightest stars in that constellation, are called Alpha Centauri and Beta Centauri. If you look at Alpha ...
... The Pointers. Not very far from the Southern Cross you will see two quite bright stars. These are known as "The Pointers". They form part of the constellation of "The Centaur" and, being the two brightest stars in that constellation, are called Alpha Centauri and Beta Centauri. If you look at Alpha ...
Stellar Evolution Review
... c) they only emit infrared radiation d) they are all moving away from Earth so fast that their visible light is Doppler shifted into the infrared ...
... c) they only emit infrared radiation d) they are all moving away from Earth so fast that their visible light is Doppler shifted into the infrared ...
charts_set_8
... equivalent. So in freefall, light and ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass it in a straight line. From a stationary perspective, it follows a curved path. So will a flashlight beam, but cu ...
... equivalent. So in freefall, light and ball also travel in straight lines. 3. Now imagine two people in freefall on Earth, passing a ball back and forth. From their perspective, they pass it in a straight line. From a stationary perspective, it follows a curved path. So will a flashlight beam, but cu ...
What tool do astronomers use to understand the evolution of stars?
... Mass-Lifetime relation • The lifetime of a star (on the main sequence) is longer if more fuel is available and shorter if that fuel is burned more rapidly • The available fuel is (roughly) proportional to the mass of the star • From the previous, we known that luminosity is much higher for higher m ...
... Mass-Lifetime relation • The lifetime of a star (on the main sequence) is longer if more fuel is available and shorter if that fuel is burned more rapidly • The available fuel is (roughly) proportional to the mass of the star • From the previous, we known that luminosity is much higher for higher m ...
Station A Star Charts I
... In words, the number of stars born with a mass equal to m is proportional to m-2.3; the constant k is the same for all stars. Using this function, how many times more stars are born with masses of 1 MSun than are born with masses of 20 MSun? Give your answer to two significant figures. D4. (3 pts) U ...
... In words, the number of stars born with a mass equal to m is proportional to m-2.3; the constant k is the same for all stars. Using this function, how many times more stars are born with masses of 1 MSun than are born with masses of 20 MSun? Give your answer to two significant figures. D4. (3 pts) U ...
Islip Invitational 2013 Astronomy Examination Student
... of them across interstellar distances. What enabled astronomers to find neutron stars in the late 1960s? a. They give off a lot more light than expected, and can be seen glowing with a reddish light from far away. b. They are so large, their dark outline blocks a significant amount of starlight from ...
... of them across interstellar distances. What enabled astronomers to find neutron stars in the late 1960s? a. They give off a lot more light than expected, and can be seen glowing with a reddish light from far away. b. They are so large, their dark outline blocks a significant amount of starlight from ...
THE SUN: OUR STAR
... responsible for Aurora Borealis. a.) Aurora Borealis- When earth’s atmosphere interacts with the particles from solar flares and solar wind, beautiful colors of light glow in the sky. b.) Sometimes called the Northern Lights. ...
... responsible for Aurora Borealis. a.) Aurora Borealis- When earth’s atmosphere interacts with the particles from solar flares and solar wind, beautiful colors of light glow in the sky. b.) Sometimes called the Northern Lights. ...
Ch2a
... The Elevation of the North Pole Star The north pole star is always at an elevation, or altitude, a, above the northern horizon, that is equal to the latitude, of the observer. Circumpolar stars are stars which are always in view. They never set below the horizon. All stars with declinations ...
... The Elevation of the North Pole Star The north pole star is always at an elevation, or altitude, a, above the northern horizon, that is equal to the latitude, of the observer. Circumpolar stars are stars which are always in view. They never set below the horizon. All stars with declinations ...
NAME_______________________________________
... ____ 15. What causes the dark bands observed in a solar spectrum? A) the emission of specific elements B) different chemical elements which absorb light at specific wavelengths C) highly compressed, glowing gas D) warmer gas in front of a source that emits a continuous spectrum ____ 16. The apparent ...
... ____ 15. What causes the dark bands observed in a solar spectrum? A) the emission of specific elements B) different chemical elements which absorb light at specific wavelengths C) highly compressed, glowing gas D) warmer gas in front of a source that emits a continuous spectrum ____ 16. The apparent ...
Schedule for Spring 2013 SCI 103 Introductory Astronomy
... Relationship between the radius, temperature and luminosity of the Sun ...
... Relationship between the radius, temperature and luminosity of the Sun ...
Planets beyond the solar system
... Extrasolar planets to date • First extrasolar planet was discovered around a neutron star in 1991 • First extrasolar planet orbiting a normal star was found in 1995 by Michel Mayor and Didier Queloz of the Geneva Observatory in Switzerland orbiting the star 51 Pegasi • 126 planets have been discov ...
... Extrasolar planets to date • First extrasolar planet was discovered around a neutron star in 1991 • First extrasolar planet orbiting a normal star was found in 1995 by Michel Mayor and Didier Queloz of the Geneva Observatory in Switzerland orbiting the star 51 Pegasi • 126 planets have been discov ...
Stars, Galaxies & Universe
... Mozi, a Chinese philosopher- 470 bc- writes on concave mirrors to focus’ sun’s rays Galileo—1609used the first telescope for astronomy purposes, made improvements -Italian Brahe-1572-used an observatory to make observations -Danish Kepler-1611-used math to interpret Brahe’s observation -Austrian New ...
... Mozi, a Chinese philosopher- 470 bc- writes on concave mirrors to focus’ sun’s rays Galileo—1609used the first telescope for astronomy purposes, made improvements -Italian Brahe-1572-used an observatory to make observations -Danish Kepler-1611-used math to interpret Brahe’s observation -Austrian New ...
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.