Stars
... an ultraviolet flare star. Many stars make solar flares, including our sun, but they are usually lost in the glare of the main star. UV Ceti is so dim that the flare stands out brighter than the red star it comes from, which creates a temporary increase in its apparent magnitude. The two stars have ...
... an ultraviolet flare star. Many stars make solar flares, including our sun, but they are usually lost in the glare of the main star. UV Ceti is so dim that the flare stands out brighter than the red star it comes from, which creates a temporary increase in its apparent magnitude. The two stars have ...
lesson 5-8 quiz.show.pps
... It happens in late September. It occurs one time a year. It is the beginning of fall in the southern hemisphere. ...
... It happens in late September. It occurs one time a year. It is the beginning of fall in the southern hemisphere. ...
The Sun . . .
... 90% of stars are main sequence. Supergiant: 20 to 200 times larger than the Sun, but also much brighter, cooler and less dense. Dwarf: Small stars; fairly hot but very dim. Diameter is about the same as Earth, but their mass is equal to the sun . . . ...
... 90% of stars are main sequence. Supergiant: 20 to 200 times larger than the Sun, but also much brighter, cooler and less dense. Dwarf: Small stars; fairly hot but very dim. Diameter is about the same as Earth, but their mass is equal to the sun . . . ...
PDF version (two pages, including the full text)
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
Stars and the Sun
... • Runs out of He, core shrinks, outer layers float into space (planetary nebula) • Core left over, small and hot (white dwarf) • Eventually fuses up to carbon, ends as small cold ball of carbon (black dwarf) ...
... • Runs out of He, core shrinks, outer layers float into space (planetary nebula) • Core left over, small and hot (white dwarf) • Eventually fuses up to carbon, ends as small cold ball of carbon (black dwarf) ...
Lecture 6: Properties of Stars The Constellations The Constellations
... o Distant stars used as reference points. Closer star appears to move relative to distant stars during Earth’s orbit about Sun. o Parallax angle: p ~ 1 AU / d => d = ~ 1 AU / p ...
... o Distant stars used as reference points. Closer star appears to move relative to distant stars during Earth’s orbit about Sun. o Parallax angle: p ~ 1 AU / d => d = ~ 1 AU / p ...
Patterns in the Sky - Plano Independent School District
... There are many stars being formed in this cloud. ...
... There are many stars being formed in this cloud. ...
Scientists classify stars by
... 3. Massive stars will become red supergiants. 4. This phase will last until the star exhausts its remaining fuel. 5. At this point, the star will collapse. ...
... 3. Massive stars will become red supergiants. 4. This phase will last until the star exhausts its remaining fuel. 5. At this point, the star will collapse. ...
Document
... You know that Tan(Ø ) = d/D Today we have accurate parallaxes for about 10,000 stars. ...
... You know that Tan(Ø ) = d/D Today we have accurate parallaxes for about 10,000 stars. ...
Chapter 28.3 Topic questions
... 18. When a main sequence star becomes a red giant what elements are forming in the core while hydrogen is being fused to helium in the outer layers? ...
... 18. When a main sequence star becomes a red giant what elements are forming in the core while hydrogen is being fused to helium in the outer layers? ...
A Universe of Dwarfs and Giants
... divided into several groups. The most important one being the ‘main sequence’ which runs from the top left to the bottom right. Our Sun is a G type main sequence star. Only about 8% of all stars are G type so our Sun is actually quite exotic. The most common group by far is the M type stars (about 7 ...
... divided into several groups. The most important one being the ‘main sequence’ which runs from the top left to the bottom right. Our Sun is a G type main sequence star. Only about 8% of all stars are G type so our Sun is actually quite exotic. The most common group by far is the M type stars (about 7 ...
Skywatch Astro Ed Dec13
... reality the brighter of the two stars. Sirius appears brighter because it is so much closer. Viewed through binoculars in a dark sky, Sirius is a breathtaking sight, sparkling with the fire of a brilliant diamond. Of course, I wouldn’t be forgiven if I didn’t mention brilliant Venus in the western s ...
... reality the brighter of the two stars. Sirius appears brighter because it is so much closer. Viewed through binoculars in a dark sky, Sirius is a breathtaking sight, sparkling with the fire of a brilliant diamond. Of course, I wouldn’t be forgiven if I didn’t mention brilliant Venus in the western s ...
“Do you have a good caption for the pop-eyed, thin
... all in Pennsylvania. There at home, the rich star fields of Scorpio and Sagittarius are flooded by the lights of a city to the south of where I live. What a mine to discover sky treasures in the Ethiopian sky! Since the star horizon is shifted 30° southward, I can see some wonders for the first time ...
... all in Pennsylvania. There at home, the rich star fields of Scorpio and Sagittarius are flooded by the lights of a city to the south of where I live. What a mine to discover sky treasures in the Ethiopian sky! Since the star horizon is shifted 30° southward, I can see some wonders for the first time ...
- hoganshomepage
... Characteristics of Stars The Sun is an average star: it’s not hot or cool it’s not large or small. We can compare stars by colour, temperature, size, brightness and spectrum. P.458 ...
... Characteristics of Stars The Sun is an average star: it’s not hot or cool it’s not large or small. We can compare stars by colour, temperature, size, brightness and spectrum. P.458 ...
Star Formation
... called the Hertzsprung-Russell diagram. • This is the H-R diagram for hundreds of nearby stars. – Temperature decreases to the right ...
... called the Hertzsprung-Russell diagram. • This is the H-R diagram for hundreds of nearby stars. – Temperature decreases to the right ...
THE METER STICK MODEL OF THE SOLAR SYSTEM
... motion (due to Earth’s rotation) of objects in the universe and how cultures have understood, related to and used these objects in the night sky. Objective 1: Compare the size and distance of objects within systems in the universe. c. Compare the size of the Solar System to the size of the Milky Way ...
... motion (due to Earth’s rotation) of objects in the universe and how cultures have understood, related to and used these objects in the night sky. Objective 1: Compare the size and distance of objects within systems in the universe. c. Compare the size of the Solar System to the size of the Milky Way ...
Consider Average Stars
... Look to the western horizon, with the sun still up in the sky. Then move your cursor to the time display at the top left, and advance the minutes quickly by holding down the arrow key on your keyboard. This makes the sun set rapidly – and you can watch the stars come out! ...
... Look to the western horizon, with the sun still up in the sky. Then move your cursor to the time display at the top left, and advance the minutes quickly by holding down the arrow key on your keyboard. This makes the sun set rapidly – and you can watch the stars come out! ...
Chapter 29 Notes
... • Luminosity: energy output per second • Composition of stars: ~73% hydrogen, ~25% helium, ~2% all other elements ...
... • Luminosity: energy output per second • Composition of stars: ~73% hydrogen, ~25% helium, ~2% all other elements ...
Friday, November 7 - Otterbein University
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
ASTRONOMY
... E. Fill in the blank. 1. There are about __________ stars you can see at night. 2. Latitudes on earth are like ____________ in space. 3. There are about ________ constellations. 4. The north-star has a magnitude of _____________. 5. The point directly overhead is called the ______________. 6. Polar ...
... E. Fill in the blank. 1. There are about __________ stars you can see at night. 2. Latitudes on earth are like ____________ in space. 3. There are about ________ constellations. 4. The north-star has a magnitude of _____________. 5. The point directly overhead is called the ______________. 6. Polar ...
