The Stars: Distance, Luminosity, Size
... The more massive a Main Sequence star is, the hotter (bluer), and more luminous. The Main Sequence is a mass sequence! ...
... The more massive a Main Sequence star is, the hotter (bluer), and more luminous. The Main Sequence is a mass sequence! ...
Stargazing
... shine brighter and attract our attention more than their smaller neighbors do. Youmightwonder:whyaresomestarsbrighterthanothers? ...
... shine brighter and attract our attention more than their smaller neighbors do. Youmightwonder:whyaresomestarsbrighterthanothers? ...
Life on Billions of Planets
... "The Creator must have an inordinate fondness for beetles," the early 20th century biologist J.B.S. Haldane once said. "He made so many of them." If Haldane had been an astronomer, he might have said the same about the nondescript red stars known as M-dwarfs. As the name implies, they're small — no ...
... "The Creator must have an inordinate fondness for beetles," the early 20th century biologist J.B.S. Haldane once said. "He made so many of them." If Haldane had been an astronomer, he might have said the same about the nondescript red stars known as M-dwarfs. As the name implies, they're small — no ...
Microsoft Power Point version
... The age of a cluster is equal to the main-sequence lifetime of hottest and most luminous main-sequence stars remaining in the cluster. On an HR diagram of the cluster, these stars sit farthest to the upper left, defining the main-sequence turnoff point of the cluster. ...
... The age of a cluster is equal to the main-sequence lifetime of hottest and most luminous main-sequence stars remaining in the cluster. On an HR diagram of the cluster, these stars sit farthest to the upper left, defining the main-sequence turnoff point of the cluster. ...
Young Stars
... •Lighter than 0.08 – they don’t get hot enough for fusion •Heavier than 150 – they burn so furiously they blow off ...
... •Lighter than 0.08 – they don’t get hot enough for fusion •Heavier than 150 – they burn so furiously they blow off ...
FREE Sample Here
... and set the magnitude limit to –30.0 to 5.0 and turn off the display of all objects except stars, planets, moon, and sun. For now turn off all reference lines, including the constellation reference lines. Now you’re ready to begin the demonstration. Press Alt+> and the program will display the daily ...
... and set the magnitude limit to –30.0 to 5.0 and turn off the display of all objects except stars, planets, moon, and sun. For now turn off all reference lines, including the constellation reference lines. Now you’re ready to begin the demonstration. Press Alt+> and the program will display the daily ...
Objectives: Learn what units scientists measure distances in space
... Proxima Centauri is the closest star to our sun. Proxima Centauri is 4.6 light years away. How many miles away is Proxima Centauri? • 4.6 light years x 6 trillion mi= 27.6 trillion miles away (27,600,000,000,000 miles or 2.76 x 10 13 ) • Since Proxima Centauri is 4.6 light years away, it takes 4.6 ...
... Proxima Centauri is the closest star to our sun. Proxima Centauri is 4.6 light years away. How many miles away is Proxima Centauri? • 4.6 light years x 6 trillion mi= 27.6 trillion miles away (27,600,000,000,000 miles or 2.76 x 10 13 ) • Since Proxima Centauri is 4.6 light years away, it takes 4.6 ...
Slides from Lecture04
... • Successively fainter stars were catalogued as 2nd magnitude, 3rd magnitude, etc. • Faintest stars (visible to the “naked eye”) were catalogued by Greek astronomers as 6th magnitude stars. • Astronomers continue to use this “magnitude” system, extending it to much fainter objects (that are visible ...
... • Successively fainter stars were catalogued as 2nd magnitude, 3rd magnitude, etc. • Faintest stars (visible to the “naked eye”) were catalogued by Greek astronomers as 6th magnitude stars. • Astronomers continue to use this “magnitude” system, extending it to much fainter objects (that are visible ...
Scale of the Universe
... 23. Proxima Centauri is the ____________________ star to Earth (other than our sun). 24. The sun is also known as ________________. It is ___________times wider than Earth. 25. Polaris is called the ____________ star because it is located above the North Pole. People use it to navigate when they don ...
... 23. Proxima Centauri is the ____________________ star to Earth (other than our sun). 24. The sun is also known as ________________. It is ___________times wider than Earth. 25. Polaris is called the ____________ star because it is located above the North Pole. People use it to navigate when they don ...
Celestial Sphere, Celestial equator, N
... The earth’s daily rotation makes the stars appear to rotate around us. Because we only see half the celestial sphere at any one place, this simple rotation of the stars looks more complicated and actually makes it appear that stars rise and set. The set of stars that rise and set varies with locatio ...
... The earth’s daily rotation makes the stars appear to rotate around us. Because we only see half the celestial sphere at any one place, this simple rotation of the stars looks more complicated and actually makes it appear that stars rise and set. The set of stars that rise and set varies with locatio ...
PPT Format - HubbleSOURCE
... a system of two objects in space (usually stars), which are so close that their gravitational interaction causes them to orbit around their common center of mass. ...
... a system of two objects in space (usually stars), which are so close that their gravitational interaction causes them to orbit around their common center of mass. ...
Homework 4
... Due November 2, 2012 at 5 p.m., either electronically or on paper. 1. If a protostar is forming out of a cold molecular cloud, how can its luminosity be upto one hundred times as large as the luminosity of the star it will become? ...
... Due November 2, 2012 at 5 p.m., either electronically or on paper. 1. If a protostar is forming out of a cold molecular cloud, how can its luminosity be upto one hundred times as large as the luminosity of the star it will become? ...
PHY2083
... now 10 pc = 2.063 x 106 AU Inverse square law => flux will be 1 / (2.063 x 106)2 times lower => Flux at 10pc = 3.21 x 10-10 W / m2 ...
... now 10 pc = 2.063 x 106 AU Inverse square law => flux will be 1 / (2.063 x 106)2 times lower => Flux at 10pc = 3.21 x 10-10 W / m2 ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.