Last Year`s Exam, Section B
... Explain why very bright main-sequence stars like θ1 Orionis C are always found in or near star formation regions, whereas less bright main-sequence stars like the Sun can be found anywhere. Brighter main-sequence stars are more massive. Luminosity increases much faster than mass: a star 10 times ...
... Explain why very bright main-sequence stars like θ1 Orionis C are always found in or near star formation regions, whereas less bright main-sequence stars like the Sun can be found anywhere. Brighter main-sequence stars are more massive. Luminosity increases much faster than mass: a star 10 times ...
Red Giants - Uplift North Hills Prep
... • done independently by Enjar Hertzsprung and Henry Norris Russell Henry Norris Russell dissuaded Cecilia Payne-Gaposchkin from concluding that the composition of the Sun is different from that of the Earth in her papers, as it contradicted the accepted wisdom at the time. However, he changed his mi ...
... • done independently by Enjar Hertzsprung and Henry Norris Russell Henry Norris Russell dissuaded Cecilia Payne-Gaposchkin from concluding that the composition of the Sun is different from that of the Earth in her papers, as it contradicted the accepted wisdom at the time. However, he changed his mi ...
The Milky Way
... The flux received from the light is proportional to its intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): ...
... The flux received from the light is proportional to its intrinsic brightness or luminosity (L) and inversely proportional to the square of the distance (d): ...
Integrative Studies 410 Our Place in the Universe
... • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
... • A shock wave travels through the star and blows off the outer layers, including the heavy elements – a supernova • A million times brighter than a nova!! • The actual explosion takes less than a second ...
SECTION 8: STARS- OBSERVING CONSTELLATIONS INTRODUCTION
... in 1 year. Light travels 300,000 km (186,000 miles) per second. It takes 8 ½ minutes for light to reach us from our Sun and 4.5 light years for light to reach us from the next closest star, Centauri Proxima. The distance between the Sun and Earth is 93 million miles. In this section, students will d ...
... in 1 year. Light travels 300,000 km (186,000 miles) per second. It takes 8 ½ minutes for light to reach us from our Sun and 4.5 light years for light to reach us from the next closest star, Centauri Proxima. The distance between the Sun and Earth is 93 million miles. In this section, students will d ...
stars_2nd_edit
... The lifespan of stars varies from thousands of years for massive stars to billions for smaller stars. Our Sun, which is of average mass, is predicted to live for about 10 billion years. By knowing the distance, mass, magnitude, and chemical composition of a star, we can determine approximately how o ...
... The lifespan of stars varies from thousands of years for massive stars to billions for smaller stars. Our Sun, which is of average mass, is predicted to live for about 10 billion years. By knowing the distance, mass, magnitude, and chemical composition of a star, we can determine approximately how o ...
File
... million K, the surface would be liquid form, while if it's cooler than that, it would be solid. Below that is a solid crust, about a kilometer thick. This crust is very hard and very smooth. Gravity would probably prevent any irregularities larger than half a centimeter. ...
... million K, the surface would be liquid form, while if it's cooler than that, it would be solid. Below that is a solid crust, about a kilometer thick. This crust is very hard and very smooth. Gravity would probably prevent any irregularities larger than half a centimeter. ...
File
... – what type of star it is, which give us… – its absolute brightness (among other things) • For example, the stars that are close enough to have their distance measured with parallax will have their spectrum analyzed. • From this, we can determine how bright a certain class of stars is supposed to be ...
... – what type of star it is, which give us… – its absolute brightness (among other things) • For example, the stars that are close enough to have their distance measured with parallax will have their spectrum analyzed. • From this, we can determine how bright a certain class of stars is supposed to be ...
Canis Major
... animals he hunted up there near him. Scorpius, however, was placed on the opposite side of the sky so Orion would never be hurt by it again. ...
... animals he hunted up there near him. Scorpius, however, was placed on the opposite side of the sky so Orion would never be hurt by it again. ...
Chapter 25 PowerPoint
... animals, or familiar objects. • Most constellations come from the Greeks. • The stars in a constellation may appear close, however each star can be millions of light-years away from each other. • There are 88 constellations used to divide the night sky. ...
... animals, or familiar objects. • Most constellations come from the Greeks. • The stars in a constellation may appear close, however each star can be millions of light-years away from each other. • There are 88 constellations used to divide the night sky. ...
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... also gases often appear to stream from one star to the other. These gaseous streams can be detected in several ways. A few spectral lines, usually of hydrogen or helium, or both, show an increased intensity during certain phases of the period, indicating an uneven distribution of these gases about t ...
... also gases often appear to stream from one star to the other. These gaseous streams can be detected in several ways. A few spectral lines, usually of hydrogen or helium, or both, show an increased intensity during certain phases of the period, indicating an uneven distribution of these gases about t ...
CONSTELLATION CEPHEUS, KING OF ETHIOPIA Cepheus is a
... contains more than 130 young stars, believed to be less than a million years old. It is approximately 3,300 light years distant and has an apparent magnitude of 11.5. NGC 7129 FACTS Cepheus is the 27th largest constellation in the night sky, occupying an area of 588 square degrees. It is located in ...
... contains more than 130 young stars, believed to be less than a million years old. It is approximately 3,300 light years distant and has an apparent magnitude of 11.5. NGC 7129 FACTS Cepheus is the 27th largest constellation in the night sky, occupying an area of 588 square degrees. It is located in ...
The Death of Stars
... • The core left over by a Type II supernova • Held up from gravity by neutron degeneracy pressure • First predicted in the 1930s, and confirmed with the discovery of pulsars in 1967 by Jocelyn Bell (her advisor got the Nobel Prize for the discovery). • We think the maximum mass (like the Chandra lim ...
... • The core left over by a Type II supernova • Held up from gravity by neutron degeneracy pressure • First predicted in the 1930s, and confirmed with the discovery of pulsars in 1967 by Jocelyn Bell (her advisor got the Nobel Prize for the discovery). • We think the maximum mass (like the Chandra lim ...
Physical Science Lecture Notes
... composition of the stars they are looking at. B. Characteristics of Stars 1. Constellation: a group or pattern of stars in the night sky that appeared as symbols or figures to ancient star gazers a. Big Dipper, Orion, Gemini, Little Dipper, etc. 2. Distance units a. AU – astronomical unit – distance ...
... composition of the stars they are looking at. B. Characteristics of Stars 1. Constellation: a group or pattern of stars in the night sky that appeared as symbols or figures to ancient star gazers a. Big Dipper, Orion, Gemini, Little Dipper, etc. 2. Distance units a. AU – astronomical unit – distance ...
answers
... 2) The Sun has a mass of 2 x 1030 kg and the other stars have masses ranging from 1/10th of this to over 200 times more. How do we know the mass of the other stars? This is done by measuring the period and radii of the ___________ orbiting them. A) moons B) planets C) stars Explain: C) Not Moons. Th ...
... 2) The Sun has a mass of 2 x 1030 kg and the other stars have masses ranging from 1/10th of this to over 200 times more. How do we know the mass of the other stars? This is done by measuring the period and radii of the ___________ orbiting them. A) moons B) planets C) stars Explain: C) Not Moons. Th ...
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.