May 8, 2012 - Plummer Pumas Science
... The Sun’s temperature was much hotter and it was much larger. __________________________________________________________________________________________________ __________________________________________________________________________________________________ ________________________________________ ...
... The Sun’s temperature was much hotter and it was much larger. __________________________________________________________________________________________________ __________________________________________________________________________________________________ ________________________________________ ...
Stars: Their Life and Afterlife
... Superbubbles form from OB associations. OB associations are clusters of massive stars of spectral types – you guessed it – O and B. • O stars are blue-violet in color with surface temperatures of 30,000 – 50,000 K. • B stars are blue-white in color with surface temperatures of 11,000 – 30,000 K. The ...
... Superbubbles form from OB associations. OB associations are clusters of massive stars of spectral types – you guessed it – O and B. • O stars are blue-violet in color with surface temperatures of 30,000 – 50,000 K. • B stars are blue-white in color with surface temperatures of 11,000 – 30,000 K. The ...
Candles in the Dark
... which get brighter then dimmer, then brighter again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type ...
... which get brighter then dimmer, then brighter again. Some vary irregularly but many follow regular patterns, flickering in seconds or pulsing over years to a steady beat. Why this happens can be explained by the physics going on inside the star, but the details aren’t important here. There is a type ...
Introduction: The Night Sky
... absolute magnitude measures the intrinsic brightness of the star (Sun = 4.8); apparent magnitude measures the brightness of the star seen from Earth (Sun = -27) ...
... absolute magnitude measures the intrinsic brightness of the star (Sun = 4.8); apparent magnitude measures the brightness of the star seen from Earth (Sun = -27) ...
Subject- Geography Class- VI Chapter 1
... THE SUN: The Sun is a star and the biggest object in the Solar System, it burns brightly in the center as planets and other objects orbit around it. It has a diameter around 110 times bigger than the Earth’s and is located around 150 million kilometres (93 million miles) away. GALAXY: A galaxy is a ...
... THE SUN: The Sun is a star and the biggest object in the Solar System, it burns brightly in the center as planets and other objects orbit around it. It has a diameter around 110 times bigger than the Earth’s and is located around 150 million kilometres (93 million miles) away. GALAXY: A galaxy is a ...
White Dwarfs
... • How are the properties of big things explained by the properties of the smallest things? Astronomy is exciting because it is about us. As you think about the deaths of stars, you are also thinking about the safety of Earth as a home for life and about the ultimate fate of our sun, our Earth, and t ...
... • How are the properties of big things explained by the properties of the smallest things? Astronomy is exciting because it is about us. As you think about the deaths of stars, you are also thinking about the safety of Earth as a home for life and about the ultimate fate of our sun, our Earth, and t ...
File
... (arms), usually a central bulge + dust are present as well. SB = barred-spiral galaxies -- are similar to spirals, but with the presence of a bar in the central regions. E = elliptical galaxies -- galaxies with smooth light distributions, biaxial profiles. Round to oval in shape. Irr = irregular gal ...
... (arms), usually a central bulge + dust are present as well. SB = barred-spiral galaxies -- are similar to spirals, but with the presence of a bar in the central regions. E = elliptical galaxies -- galaxies with smooth light distributions, biaxial profiles. Round to oval in shape. Irr = irregular gal ...
MIDTERM #1 AST209 - The Cosmos Feb 10, 2012 50 minutes
... D) explained and predicted the motions of the planets with deferents and epicycles. E) describes the orbits of the planets as being ellipses, not circles. 31. Which of the following statements about the celestial equator is true at all latitudes? A) It represents an extension of Earth's equator onto ...
... D) explained and predicted the motions of the planets with deferents and epicycles. E) describes the orbits of the planets as being ellipses, not circles. 31. Which of the following statements about the celestial equator is true at all latitudes? A) It represents an extension of Earth's equator onto ...
The Inverse Square Law and Surface Area
... • There are several classes of stars with known power output. • Stars which have the same surface temperature ( and spectral characteristics) as the sun all have the same power output • We can readily calculate the power output of nearby stars and classify their power output and compare them with mo ...
... • There are several classes of stars with known power output. • Stars which have the same surface temperature ( and spectral characteristics) as the sun all have the same power output • We can readily calculate the power output of nearby stars and classify their power output and compare them with mo ...
Summary: Stellar Distances
... Interstellar dust makes stars look redder over long 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 “ ...
... Interstellar dust makes stars look redder over long 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 “ ...
Astronomy Study Guide
... Apparent brightness—the brightness of a star as seen from Earth Absolute brightness—a star’s brightness as if it were a standard distance from Earth Constellation—an imaginary pattern of stars (example—Orion) Hertzsprung - Russell diagram (H-R diagram)—a graph of stars showing surface temperature on ...
... Apparent brightness—the brightness of a star as seen from Earth Absolute brightness—a star’s brightness as if it were a standard distance from Earth Constellation—an imaginary pattern of stars (example—Orion) Hertzsprung - Russell diagram (H-R diagram)—a graph of stars showing surface temperature on ...
A stars
... Around Epsilon Indi (Spectral type K5: about one-tenth the Sun's luminosity), an Earth-sized planet would have to orbit at about the distance of Mercury from the star. ...
... Around Epsilon Indi (Spectral type K5: about one-tenth the Sun's luminosity), an Earth-sized planet would have to orbit at about the distance of Mercury from the star. ...
Cosmic Distance Ladder
... Note that beyond the Virgo cluster, even very bright stars like Cepheids become unresolved and we see only the integrated light from galaxies. Further away than this, we must determine distances using the redshift of galaxies. ...
... Note that beyond the Virgo cluster, even very bright stars like Cepheids become unresolved and we see only the integrated light from galaxies. Further away than this, we must determine distances using the redshift of galaxies. ...
dtu7ech11 - Fort Thomas Independent Schools
... Our eyes change angle as we look at things that are different distances away. ...
... Our eyes change angle as we look at things that are different distances away. ...
giant molecular clouds
... Giant Molecular Clouds => Stars do not form isolated, but in large groups, called Open Clusters of Stars. ...
... Giant Molecular Clouds => Stars do not form isolated, but in large groups, called Open Clusters of Stars. ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.