Properties of Stars - Indiana State University
... • A spectrum also can reveal a star’s composition, temperature, luminosity, velocity in space, rotation speed, and other properties • On certain occasions, it may reveal mass and ...
... • A spectrum also can reveal a star’s composition, temperature, luminosity, velocity in space, rotation speed, and other properties • On certain occasions, it may reveal mass and ...
Rogava_Course_-_First_lecture
... • Eta Carinae had a giant eruption or supernova impostor event seen around 1843. In a few years, it produced almost as much visible light as a supernova explosion, but it survived. ...
... • Eta Carinae had a giant eruption or supernova impostor event seen around 1843. In a few years, it produced almost as much visible light as a supernova explosion, but it survived. ...
Question Paper - SAVE MY EXAMS!
... 17 Scientists believe that our universe began with a big bang, and is presently expanding. The ultimate fate of the universe depends upon the total amount of matter in the universe. One possibility is a big crunch where the universe eventually contracts back into a point of infinite density. A unive ...
... 17 Scientists believe that our universe began with a big bang, and is presently expanding. The ultimate fate of the universe depends upon the total amount of matter in the universe. One possibility is a big crunch where the universe eventually contracts back into a point of infinite density. A unive ...
THE PROPERTIES OF MAIN-SEQUENCE STARS - Cosmos
... in the Michigan catalogues and (ii) had spectroscopic parallaxes that placed them within 80 pc of the Sun. Of these, 3727 are well determined as luminosity class V and actually lie within 100 pc. From this subsample we can determine the distribution in MV of mainsequence stars of given spectral type ...
... in the Michigan catalogues and (ii) had spectroscopic parallaxes that placed them within 80 pc of the Sun. Of these, 3727 are well determined as luminosity class V and actually lie within 100 pc. From this subsample we can determine the distribution in MV of mainsequence stars of given spectral type ...
Magnitudes lesson plan
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
Lecture 8: The Stars - Department of Physics and Astronomy
... In 1925 she was the first person to earn a Ph.D. in astronomy from Harvard. Her thesis was later called by Otto Struve the “Undoubted the most brilliant Ph.D. thesis ever written in astronomy” In 1956 she became the first female tenured professor at Harvard, and later the first female chair. ...
... In 1925 she was the first person to earn a Ph.D. in astronomy from Harvard. Her thesis was later called by Otto Struve the “Undoubted the most brilliant Ph.D. thesis ever written in astronomy” In 1956 she became the first female tenured professor at Harvard, and later the first female chair. ...
THE CHANGING SKY
... times. II. Exercises: Rotation of the Earth During the course of a night or a year, the stars appear to change their positions in the sky. This is not due to the stars moving through space, but rather the fact that the Earth is moving and we are moving with it. In this exercise, we will use the comp ...
... times. II. Exercises: Rotation of the Earth During the course of a night or a year, the stars appear to change their positions in the sky. This is not due to the stars moving through space, but rather the fact that the Earth is moving and we are moving with it. In this exercise, we will use the comp ...
![David`s Mapping the Heavens[1]](http://s1.studyres.com/store/data/008084229_1-877ead4b57cbb51d927fdcd6d06ce5c8-300x300.png)
David`s Mapping the Heavens[1]
... • The stars temperature (a hot star radiates more energy/second from a given area of its surface) • The stars size (a bigger star has more surface that radiates energy) • So a big hot star will be have a higher luminosity than a small cool star. Observed Brightness – a measure of the light reaching ...
... • The stars temperature (a hot star radiates more energy/second from a given area of its surface) • The stars size (a bigger star has more surface that radiates energy) • So a big hot star will be have a higher luminosity than a small cool star. Observed Brightness – a measure of the light reaching ...
The Stars education kit - Student activities 5-10
... and the Sun. This is why Orion can be seen in our night sky during summer evenings. As the Earth continues to move around the Sun throughout the year, Orion is observed low in the eastern sky during the evening from December, sits overhead throughout February, and sinks low in the western sky come A ...
... and the Sun. This is why Orion can be seen in our night sky during summer evenings. As the Earth continues to move around the Sun throughout the year, Orion is observed low in the eastern sky during the evening from December, sits overhead throughout February, and sinks low in the western sky come A ...
Assignment 7 - Department of Physics and Astronomy
... d. stars that rotate bring the light atoms (like hydrogen) spinning up to their surfaces; so they can be identified by the elements they contain e. this astronomer better spend some more time enjoying his hobby, because he is not doing well at his job; there is no way we know about today to identi ...
... d. stars that rotate bring the light atoms (like hydrogen) spinning up to their surfaces; so they can be identified by the elements they contain e. this astronomer better spend some more time enjoying his hobby, because he is not doing well at his job; there is no way we know about today to identi ...
Define the following terms in the space provided
... your journey of a few weeks, you spend some time observing the stars. Which of the statements below would represent one of your observations? A) The northern stars were above the horizon less time each succeeding night. B) The region of the sky that was circumpolar increased each night. C) Polaris w ...
... your journey of a few weeks, you spend some time observing the stars. Which of the statements below would represent one of your observations? A) The northern stars were above the horizon less time each succeeding night. B) The region of the sky that was circumpolar increased each night. C) Polaris w ...
Diffuse Ultraviolet Emission in Galaxies
... producing large amounts of UV radiation. We divided these stars into two groups, using their traditional names: “O-type” stars, with initial masses >20 Msun and lifespans < 5 Myr, and “B-type” stars of 8–20 Msun, which live 5–25 Myr. Then we went back to the ACS exposures to investigate the location ...
... producing large amounts of UV radiation. We divided these stars into two groups, using their traditional names: “O-type” stars, with initial masses >20 Msun and lifespans < 5 Myr, and “B-type” stars of 8–20 Msun, which live 5–25 Myr. Then we went back to the ACS exposures to investigate the location ...
Building the Hertzsprung
... What would be the lifetime of a star one tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
... What would be the lifetime of a star one tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
stars-notes
... Distance to the Stars, continued • Parallax is an apparent shift in the position of an object when viewed from different locations. • Astronomers use parallax and trigonometry to find the actual distance to stars that are close to Earth. ...
... Distance to the Stars, continued • Parallax is an apparent shift in the position of an object when viewed from different locations. • Astronomers use parallax and trigonometry to find the actual distance to stars that are close to Earth. ...
Goal: To understand how to find the brightness of stars and what
... • So, instead of 1,2,3, we go by X1, X2,X3. • X can be anything. • For stars, X is about 2.5. • So, 5 orders of magnitude is a factor of 2.55 (which turns out to be about a factor of 100) • Some scales also have logarithmic scales for ...
... • So, instead of 1,2,3, we go by X1, X2,X3. • X can be anything. • For stars, X is about 2.5. • So, 5 orders of magnitude is a factor of 2.55 (which turns out to be about a factor of 100) • Some scales also have logarithmic scales for ...
H-RDiagramSE
... diagram and become giants or supergiants. Giants and supergiants form when the center of a star collapses and its outer parts expand outwards. What are the characteristics of giants and supergiants? _____________________________ ...
... diagram and become giants or supergiants. Giants and supergiants form when the center of a star collapses and its outer parts expand outwards. What are the characteristics of giants and supergiants? _____________________________ ...
ph507lecnote06
... luminance, intensity, or "specific intensity". This is sometimes also called "surface brightness". Still another unit for intensity is magnitudes per square arcsec, which is the magnitude at which each square arcsec of an extended light source shines. Only visual magnitudes can be converted to photo ...
... luminance, intensity, or "specific intensity". This is sometimes also called "surface brightness". Still another unit for intensity is magnitudes per square arcsec, which is the magnitude at which each square arcsec of an extended light source shines. Only visual magnitudes can be converted to photo ...
Scorpius: The Scorpion Σκορπιος Amber Perrine Physics 1040 MWF
... hundred stars that form a shape similar to a butterfly with open wings that is visible to the naked eye. The cluster is between the bow of Sagittarius and the tail of Scorpius. It has an apparent visual magnitude of 4.2 and its angular diameter is 25 arc-minutes. Messier 6 lies approximately 1,600 l ...
... hundred stars that form a shape similar to a butterfly with open wings that is visible to the naked eye. The cluster is between the bow of Sagittarius and the tail of Scorpius. It has an apparent visual magnitude of 4.2 and its angular diameter is 25 arc-minutes. Messier 6 lies approximately 1,600 l ...
THE GALACTIC GAZETTE The Astronomical Society of Southern New England Next Meeting
... Cataclysmics, also known as dwarf novae, are binary stars in close orbit about one another. One of them is Sunlike, the other a compact white dwarf star with an appetite. Their embrace is so tight — 100,000 miles for SS Cygni according to some estimates — that the dwarf's powerful gravity strips mat ...
... Cataclysmics, also known as dwarf novae, are binary stars in close orbit about one another. One of them is Sunlike, the other a compact white dwarf star with an appetite. Their embrace is so tight — 100,000 miles for SS Cygni according to some estimates — that the dwarf's powerful gravity strips mat ...
Three Coordinate Systems
... Based on what an observer sees in the sky. Zenith = point directly above the observer (90o) Nadir = point directly below the observer (-90o) – can’t be seen Horizon = plane (0o) Altitude = angle above the horizon to an object (star, sun, etc) (range = 0o to 90o) ...
... Based on what an observer sees in the sky. Zenith = point directly above the observer (90o) Nadir = point directly below the observer (-90o) – can’t be seen Horizon = plane (0o) Altitude = angle above the horizon to an object (star, sun, etc) (range = 0o to 90o) ...
Three Coordinate Systems
... Based on what an observer sees in the sky. Zenith = point directly above the observer (90o) Nadir = point directly below the observer (-90o) – can’t be seen Horizon = plane (0o) Altitude = angle above the horizon to an object (star, sun, etc) (range = 0o to 90o) ...
... Based on what an observer sees in the sky. Zenith = point directly above the observer (90o) Nadir = point directly below the observer (-90o) – can’t be seen Horizon = plane (0o) Altitude = angle above the horizon to an object (star, sun, etc) (range = 0o to 90o) ...
Bright versus Nearby Stars
... stars within 24 light years of the Sun. • The closest star is 4.3 light years away. • The average distance to the nearest stars is 17 light years. ...
... stars within 24 light years of the Sun. • The closest star is 4.3 light years away. • The average distance to the nearest stars is 17 light years. ...
TMSP Stellar Evolution & Life
... http://www.seafriends.org.nz/oceano/abund.htm http://www.daviddarling.info/encyclopedia/E/elbio.html http://www.lpi.usra.edu/meetings/abscicon2010/pdf/5547.pdf ...
... http://www.seafriends.org.nz/oceano/abund.htm http://www.daviddarling.info/encyclopedia/E/elbio.html http://www.lpi.usra.edu/meetings/abscicon2010/pdf/5547.pdf ...
Classifying Spectra PDF version - the Home Page for Voyager2
... The spectral classes are specified by the letters O, B, A, F, G, K, M, L, T going hotter to colder. Each letter is subdivided by assigning a number 0 through 9 following the letter and going from hotter to colder. So B0 is colder than O9 and hotter than B1. Obviously not every type is shown. Origina ...
... The spectral classes are specified by the letters O, B, A, F, G, K, M, L, T going hotter to colder. Each letter is subdivided by assigning a number 0 through 9 following the letter and going from hotter to colder. So B0 is colder than O9 and hotter than B1. Obviously not every type is shown. Origina ...