Study Guide Astronomy
... 11. What color are the coolest stars? What color are the hottest stars? ...
... 11. What color are the coolest stars? What color are the hottest stars? ...
An Introduction to the Night Sky Stars and Constellations
... An Introduction to the Night Sky Stars and Constellations 1. What is the Latin root word of star? 2. Why do stars “twinkle”? 3. Why do planets “shine”? ...
... An Introduction to the Night Sky Stars and Constellations 1. What is the Latin root word of star? 2. Why do stars “twinkle”? 3. Why do planets “shine”? ...
Chapter 21 power point - Laconia School District
... the upper left to the lower right and includes more than 90% of all stars. ...
... the upper left to the lower right and includes more than 90% of all stars. ...
The HR Diagram
... • Where are stars most of their lives? • Where are they when they begin to die? • What are they after they use up their ...
... • Where are stars most of their lives? • Where are they when they begin to die? • What are they after they use up their ...
Chapter 28 Stars and Galaxies Reading Guide
... 16. We are not able to visit distant stars, yet we can determine how far away they are. How do parallax and math help us do this? A nearby star's apparent movement against the background of more distant stars as the Earth revolves around the Sun is referred to as stellar parallax. Nearby objects hav ...
... 16. We are not able to visit distant stars, yet we can determine how far away they are. How do parallax and math help us do this? A nearby star's apparent movement against the background of more distant stars as the Earth revolves around the Sun is referred to as stellar parallax. Nearby objects hav ...
The Hertzsprung – Russell Diagram Star Data Table
... Danish astronomer Ejnar Hertzsprung and American astronomer Henry Russell discovered a relationship between the brightness of a star and the surface temperature of a star. The graph of a star’s absolute magnitude versus its temperature is called an ...
... Danish astronomer Ejnar Hertzsprung and American astronomer Henry Russell discovered a relationship between the brightness of a star and the surface temperature of a star. The graph of a star’s absolute magnitude versus its temperature is called an ...
At the Heart of the Matter: The Blue White Dwarf in M 57. Paul Temple
... comparison, the earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense! ...
... comparison, the earth itself has an average density of only 5.4 x 103 kg/m3. That means a white dwarf is 200,000 times as dense! ...
Name
... 13. Star A has an apparent magnitude of .15 and is 1600 lya. Star B has an apparent magnitude of .86 and is 14 lya. If Star B is a white giant, what might be true about Star A? Star ...
... 13. Star A has an apparent magnitude of .15 and is 1600 lya. Star B has an apparent magnitude of .86 and is 14 lya. If Star B is a white giant, what might be true about Star A? Star ...
properties of stars 2012
... Variable Stars are those whose luminosity varies. A PULSATING variable is a star that is swelling and shrinking. As it swells, the same energy is spread over a larger area, the star cools and appears dimmer. (also, star cols because less pressure allows energy to escape) As it shrinks, it heats up ...
... Variable Stars are those whose luminosity varies. A PULSATING variable is a star that is swelling and shrinking. As it swells, the same energy is spread over a larger area, the star cools and appears dimmer. (also, star cols because less pressure allows energy to escape) As it shrinks, it heats up ...
Study Guide: Use your notes and handouts to
... 32. What does magnitude of stars really measure? 33. How is apparent magnitude different from absolute magnitude? 34. What is a parallax? What is it used to measure in space? 35. What is a Hertzsprung Russell Diagram? 36. What is on the X axis of a HR Diagram? 37. What is on the Y axis of the HR Dia ...
... 32. What does magnitude of stars really measure? 33. How is apparent magnitude different from absolute magnitude? 34. What is a parallax? What is it used to measure in space? 35. What is a Hertzsprung Russell Diagram? 36. What is on the X axis of a HR Diagram? 37. What is on the Y axis of the HR Dia ...
E3 STELLAR DISTANCES E4 COSMOLOGY
... A main sequence star emits most of its energy at λ = 2.4 x 10-7 m. Its apparent brightness is measure at 4.3 x 10-9 W m-2. How far away is the star? [28 pc] ...
... A main sequence star emits most of its energy at λ = 2.4 x 10-7 m. Its apparent brightness is measure at 4.3 x 10-9 W m-2. How far away is the star? [28 pc] ...
Chapter 2: The Sky
... • If the Earth did not rotate about its axis, could we define a celestial sphere as we do now? • Could we even define a set of poles and equator? • What is the difference between a constellation and an asterism? Examples? • What does the word apparent mean in the context of “apparent visual magnitud ...
... • If the Earth did not rotate about its axis, could we define a celestial sphere as we do now? • Could we even define a set of poles and equator? • What is the difference between a constellation and an asterism? Examples? • What does the word apparent mean in the context of “apparent visual magnitud ...
Apparent Magnitude
... In 125 B.C., a famous astronomer of that time, named Hipparchus, was making a star map of the “celestial sphere”. Hipparchus not only wanted to locate each star’s position on his map, but also to indicate the brightness of each star. To do this Hipparchus invented the concept of stellar magnitude. H ...
... In 125 B.C., a famous astronomer of that time, named Hipparchus, was making a star map of the “celestial sphere”. Hipparchus not only wanted to locate each star’s position on his map, but also to indicate the brightness of each star. To do this Hipparchus invented the concept of stellar magnitude. H ...
Chapter 11 - USD Home Pages
... 35. a. What is the approximate mass of a main sequence star that is 10,000 times as luminous as the Sun? b. What is the approximate lumniosuty of a main-sequence star whose mass is one-tenth that of the Sun? Answer: a. Reading Fig 11-14: Find 104 L on the vertical scale; trace horizontally until yo ...
... 35. a. What is the approximate mass of a main sequence star that is 10,000 times as luminous as the Sun? b. What is the approximate lumniosuty of a main-sequence star whose mass is one-tenth that of the Sun? Answer: a. Reading Fig 11-14: Find 104 L on the vertical scale; trace horizontally until yo ...
Arcturus and Pollux
... • “Castor and Pollux” according to Roman mythology. Zeus seduced Leda by disguising himself as a swan. Castor was born by King of Sparta, Pollux by Zeus. Castor died, Pollux wanted to join him in Hades, so Zeus was sympathetic and placed both in the sky. • 17th Brightest star in the sky • 33.7 light ...
... • “Castor and Pollux” according to Roman mythology. Zeus seduced Leda by disguising himself as a swan. Castor was born by King of Sparta, Pollux by Zeus. Castor died, Pollux wanted to join him in Hades, so Zeus was sympathetic and placed both in the sky. • 17th Brightest star in the sky • 33.7 light ...
Properties of Stars
... • Very hot (30,000 K) stars emit their light in the blue spectrum, red stars are much cooler, stars with temperatures between 5000 and 6000 K appear yellow • Binary Stars – pairs of stars, pulled together by gravity, that orbit each other • Binary stars are used to determine the star property most d ...
... • Very hot (30,000 K) stars emit their light in the blue spectrum, red stars are much cooler, stars with temperatures between 5000 and 6000 K appear yellow • Binary Stars – pairs of stars, pulled together by gravity, that orbit each other • Binary stars are used to determine the star property most d ...
d 2
... star, cf. 100 W lightbulb • Apparent brightness B is how bright it appears from Earth – Determined by the amount of light per unit area reaching Earth – B L / d2 ...
... star, cf. 100 W lightbulb • Apparent brightness B is how bright it appears from Earth – Determined by the amount of light per unit area reaching Earth – B L / d2 ...
Lecture 5: Light as a tool
... 1) Why does our sky appear to be mostly blue, and not violet, at mid-day? 2) What color would our sky be if atmospheric particles were slightly larger? 3) Why is the sky black on the moon? ...
... 1) Why does our sky appear to be mostly blue, and not violet, at mid-day? 2) What color would our sky be if atmospheric particles were slightly larger? 3) Why is the sky black on the moon? ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... Extension Worksheet – Option E, Worksheet 2, HL only ...
... Extension Worksheet – Option E, Worksheet 2, HL only ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.