Lecture 10 February 13
... Astrometric Binary proper motion wiggles to show orbit Spectrum Binary spectra of two stars of different type Spectroscopic Binary Doppler shift shows orbital motion Eclipsing Binary light varies Half of all stars are in binaries…. Binary stars are formed at birth. Both components will have same age ...
... Astrometric Binary proper motion wiggles to show orbit Spectrum Binary spectra of two stars of different type Spectroscopic Binary Doppler shift shows orbital motion Eclipsing Binary light varies Half of all stars are in binaries…. Binary stars are formed at birth. Both components will have same age ...
Hertzsprung-Russell (H-R) Diagram Hertzsprung-Russell Diagram March 16 −
... Stars: A-Aldebaran; B-Barnard’s Star; CCapella; D-Rigel What do you need to know about stars to answer the next 4 questions? Pick one 104 correct ans. a. b. c. d. e. ...
... Stars: A-Aldebaran; B-Barnard’s Star; CCapella; D-Rigel What do you need to know about stars to answer the next 4 questions? Pick one 104 correct ans. a. b. c. d. e. ...
Hertzsprung2 - courses.psu.edu
... A final word about the stars in the night sky: * Majority of stars in the galaxy are low-luminosity cool stars (“red dwarfs”) ...
... A final word about the stars in the night sky: * Majority of stars in the galaxy are low-luminosity cool stars (“red dwarfs”) ...
Chapter 21 Study Guide
... 12. A building that contains one or more telescopes is called an _____________________________. 13. Name one reason why astronomers have built large telescopes on the tops of mountains. _____________________________________________________________________________________ 14. The Hubble Space Telesco ...
... 12. A building that contains one or more telescopes is called an _____________________________. 13. Name one reason why astronomers have built large telescopes on the tops of mountains. _____________________________________________________________________________________ 14. The Hubble Space Telesco ...
Constellations
... configurations called constellations, which ancient astronomers named after mythological beings, heroes, and animals—whatever was important to them. ...
... configurations called constellations, which ancient astronomers named after mythological beings, heroes, and animals—whatever was important to them. ...
Distances to Stars: Parsecs and Light Years
... Think back to descriptions of solar system distances (light minutes to light days) and compare the situation for nearby stars to get an idea of the immensity of interstellar ...
... Think back to descriptions of solar system distances (light minutes to light days) and compare the situation for nearby stars to get an idea of the immensity of interstellar ...
Sequence of Stars Notes
... as seen from Earth, depends on star’s actual brightness and distance from Earth Absolute Magnitude: how bright a star actually is, with no regard to distance ...
... as seen from Earth, depends on star’s actual brightness and distance from Earth Absolute Magnitude: how bright a star actually is, with no regard to distance ...
Constellation Information
... On July evenings, giant beasts and giant men stand on the north-south meridian of the sky. But even more fascinating than the mythology attached to these constellations are the sights we can see in them with modern optical aid. Brightest of the beasts is Scorpius, the Scorpion. This big, glittering ...
... On July evenings, giant beasts and giant men stand on the north-south meridian of the sky. But even more fascinating than the mythology attached to these constellations are the sights we can see in them with modern optical aid. Brightest of the beasts is Scorpius, the Scorpion. This big, glittering ...
Stellar Physics - University of Reading
... Classical Mechanics and Optics Thermodynamics and Statistical Mechanics Atomic and Molecular Physics Ideas from Observational Astronomy ...
... Classical Mechanics and Optics Thermodynamics and Statistical Mechanics Atomic and Molecular Physics Ideas from Observational Astronomy ...
The Galactic Super Star Cluster Westerlund 1
... have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times more flux than we observe. We suggest that the IMF is nonstandard, as is often claimed for young, massive star clusters. ...
... have expected diffuse emission with L x = 3x10 35 erg s-1, which is five times more flux than we observe. We suggest that the IMF is nonstandard, as is often claimed for young, massive star clusters. ...
stars
... • Are a group of stars that are connected together to make a picture (like connect the dots) • They were used but early explorers to navigate the sea at night • All together there are 88 constellations in the night sky. ...
... • Are a group of stars that are connected together to make a picture (like connect the dots) • They were used but early explorers to navigate the sea at night • All together there are 88 constellations in the night sky. ...
solution
... apparent magnitude of 13.25. Which star appears brighter? From this information alone, what can you conclude about the luminosities of these stars? Explain your answer. Zubenelgenubi appears to be brighter, since it has a lower apparent magnitude (remember that a negative apparent magnitude is very ...
... apparent magnitude of 13.25. Which star appears brighter? From this information alone, what can you conclude about the luminosities of these stars? Explain your answer. Zubenelgenubi appears to be brighter, since it has a lower apparent magnitude (remember that a negative apparent magnitude is very ...
LT 9: I can describe how a protostar becomes a star.
... When Hydrogen in core is used up, gravity causes the core to collapse Temperature rises making the outer shell of the star super expand The surface temperature drops and it is now a huge, bright, red aging star ...
... When Hydrogen in core is used up, gravity causes the core to collapse Temperature rises making the outer shell of the star super expand The surface temperature drops and it is now a huge, bright, red aging star ...
Summary: Stellar Distances
... Temperatures can also be inferred from the appearance of a star’s spectrum - the pattern of spectral lines. This spectral typing is not affected by interstellar dust. Surface temperatures of stars almost all lie between 40,000°K for the “bluest” stars to about 3,000°K for the “reddest” stars. Relati ...
... Temperatures can also be inferred from the appearance of a star’s spectrum - the pattern of spectral lines. This spectral typing is not affected by interstellar dust. Surface temperatures of stars almost all lie between 40,000°K for the “bluest” stars to about 3,000°K for the “reddest” stars. Relati ...
Study Guide for the 4TH Astronomy Exam
... Study Guide for the 4TH Astronomy Exam Stellar Evolution The successful student will be able to… 1. Star Formation a. Describe the physical characteristics of a giant molecular cloud b. Identify the source of heating (energy production) in protostars c. Explain why more low-mass K & M main sequence ...
... Study Guide for the 4TH Astronomy Exam Stellar Evolution The successful student will be able to… 1. Star Formation a. Describe the physical characteristics of a giant molecular cloud b. Identify the source of heating (energy production) in protostars c. Explain why more low-mass K & M main sequence ...
Characteristics of Stars Stars Analyzing Starlight Star Characteristics
... · spectrographs - device that separates light into different wavelengths (colors) · each star produces a unique spectrum (series of colors and lines) · a star's spectrum tells us ...
... · spectrographs - device that separates light into different wavelengths (colors) · each star produces a unique spectrum (series of colors and lines) · a star's spectrum tells us ...
Stars - TeacherWeb
... If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left behind is an intense region of gravity called a black hole ...
... If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the universe. What is left behind is an intense region of gravity called a black hole ...
Apparent brightness
... Explain how stellar distances are determined. Explain how physical laws are used to estimate stellar sizes. Distinguish between luminosity and brightness and explain how stellar luminosity is determined. Explain how stars are classified according to their colors, surface temperatures and spe ...
... Explain how stellar distances are determined. Explain how physical laws are used to estimate stellar sizes. Distinguish between luminosity and brightness and explain how stellar luminosity is determined. Explain how stars are classified according to their colors, surface temperatures and spe ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... Covers up to today Cumulative You can bring in one 8 ½ by 11 inch piece of paper with anything written on it ...
... Covers up to today Cumulative You can bring in one 8 ½ by 11 inch piece of paper with anything written on it ...
presentation source
... core detonates star - Supernova! • Shines as brightly as galaxy for a few days! GENS4001 1999-X1 ...
... core detonates star - Supernova! • Shines as brightly as galaxy for a few days! GENS4001 1999-X1 ...
Stars - Moodle
... • Notice that I did not say __________ • Stars emit all ______________________ of the EM spectrum Analyzing Starlight ...
... • Notice that I did not say __________ • Stars emit all ______________________ of the EM spectrum Analyzing Starlight ...
Stars and Galaxies
... elements such as iron, oxygen, silicon and magnesium are created. These are elements needed for life. ...
... elements such as iron, oxygen, silicon and magnesium are created. These are elements needed for life. ...
Slide 1 - Physics @ IUPUI
... rotations (seconds) • Only seem to last 10,000 years or so • Hard to observe flare up only very randomly ...
... rotations (seconds) • Only seem to last 10,000 years or so • Hard to observe flare up only very randomly ...
Star catalogue
A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians, and Arabs. Most modern catalogues are available in electronic format and can be freely downloaded from NASA's Astronomical Data Center.Completeness and accuracy is described by the weakest apparent magnitude V (largest number) and the accuracy of the positions.