Model of Stars—5 Oct Outline •
... What can I do to make the same hot‐plate at the same setting burn my hand and not burn my hand? (Without modifying the sun, what can I do to make the sun brighter or fainter?) A. B. ...
... What can I do to make the same hot‐plate at the same setting burn my hand and not burn my hand? (Without modifying the sun, what can I do to make the sun brighter or fainter?) A. B. ...
annie jump cannon
... stars into the spectral classes O, B, A, F, G, K, M. (mnemonically recognized as Oh Be A Fine Girl Kiss Me) ...
... stars into the spectral classes O, B, A, F, G, K, M. (mnemonically recognized as Oh Be A Fine Girl Kiss Me) ...
Review for Exam 2
... 1) What property of a star determines how it will evolve? 2) What do all stars on the main sequence have in common? How does the 6me spent on the main sequence depend on mass? 3) What are t ...
... 1) What property of a star determines how it will evolve? 2) What do all stars on the main sequence have in common? How does the 6me spent on the main sequence depend on mass? 3) What are t ...
STUDY QUESTIONS #10 The MILKY WAY GALAXY diameter face
... 9. Using the rotation curve above, astronomers have calculated a mass for the whole Galaxy, out to about 50,000 light-year radius where there are no more stars, to be about 2 × 1011 M , yet by measuring light at all wavelengths, they only measure one sixth of that mass (3 × 1010 M ). Using the orbit ...
... 9. Using the rotation curve above, astronomers have calculated a mass for the whole Galaxy, out to about 50,000 light-year radius where there are no more stars, to be about 2 × 1011 M , yet by measuring light at all wavelengths, they only measure one sixth of that mass (3 × 1010 M ). Using the orbit ...
Document
... • T Tauri stars are the youngest visible F, G, K, M spectral type stars. Their surface temperatures are similar to those of main sequence stars of the same mass, but they are significantly more luminous because their radii are larger. Their central temperatures are too low for hydrogen fusion. Inste ...
... • T Tauri stars are the youngest visible F, G, K, M spectral type stars. Their surface temperatures are similar to those of main sequence stars of the same mass, but they are significantly more luminous because their radii are larger. Their central temperatures are too low for hydrogen fusion. Inste ...
Brock physics - Brock University
... 27. White dwarfs dim and eventually become black dwarfs (a) after a few tens of thousands of years. (b) after a few tens of millions of years. (c) after a few hundreds of millions of years. (d) * over a time scale similar to the current age of the universe. 28. A type Ia supernova occurs because of ...
... 27. White dwarfs dim and eventually become black dwarfs (a) after a few tens of thousands of years. (b) after a few tens of millions of years. (c) after a few hundreds of millions of years. (d) * over a time scale similar to the current age of the universe. 28. A type Ia supernova occurs because of ...
Stages in the Life of a Star
... “winds”’. Note: A Red Giant may be large in terms of linear size, but it is less massive than the main sequence star it came from! ...
... “winds”’. Note: A Red Giant may be large in terms of linear size, but it is less massive than the main sequence star it came from! ...
Test 3
... 23) Suppose you have two stars tugging on each other with a force of 10 38 Newtons of force. Now you double the distance between them. What is the new force? a) ¼ × 1038 b) ½ × 1038 c) 2 × 1038 d) 4 × 1038 24) A planet moves faster along its orbit a) when near the sun b) when far from the sun c) at ...
... 23) Suppose you have two stars tugging on each other with a force of 10 38 Newtons of force. Now you double the distance between them. What is the new force? a) ¼ × 1038 b) ½ × 1038 c) 2 × 1038 d) 4 × 1038 24) A planet moves faster along its orbit a) when near the sun b) when far from the sun c) at ...
The Sun is a mass of Incandescent Gas
... Massive stars evolve in a similar way to a small stars until it reaches its main sequence stage (see small stars, stages 1-4). The stars shine steadily until the hydrogen has fused to form helium ( it takes billions of years in a small star, but only millions in a massive star). ...
... Massive stars evolve in a similar way to a small stars until it reaches its main sequence stage (see small stars, stages 1-4). The stars shine steadily until the hydrogen has fused to form helium ( it takes billions of years in a small star, but only millions in a massive star). ...
How do stars appear to move to an observer on the
... brighter for a short time. Some white dwarfs do not just cool, they have one or more large explosions. Astronomers think this may be caused by a companion star that is having material taken from it by the white dwarf. ...
... brighter for a short time. Some white dwarfs do not just cool, they have one or more large explosions. Astronomers think this may be caused by a companion star that is having material taken from it by the white dwarf. ...
Infinity Express
... described, and predicted. (By end of grade 2). The sun is a star that appears larger and brighter than other stars because it is closer. Stars range greatly in their distance from Earth. (By end of grade 5). Patterns of the apparent motion of the sun, the moon, and stars in the sky can be observed, ...
... described, and predicted. (By end of grade 2). The sun is a star that appears larger and brighter than other stars because it is closer. Stars range greatly in their distance from Earth. (By end of grade 5). Patterns of the apparent motion of the sun, the moon, and stars in the sky can be observed, ...
What is Epsilon Aurigae?
... -Eclipses last almost 2 years, and happen every 27.1 years (mid-eclipse ~5 Aug 2010) ...
... -Eclipses last almost 2 years, and happen every 27.1 years (mid-eclipse ~5 Aug 2010) ...
Stars I
... – something twice as far away will be four times fainter – something 10 times further away will be 100 times fainter – something 1000 times further away will be a million times fainter ...
... – something twice as far away will be four times fainter – something 10 times further away will be 100 times fainter – something 1000 times further away will be a million times fainter ...
Lecture5 - Tufts Institute of Cosmology
... • Uses scientific Methodology to solve the problem (Who produces better data; who gives better interpretations?) ...
... • Uses scientific Methodology to solve the problem (Who produces better data; who gives better interpretations?) ...
bbColors
... account the size of and distance to the star. So in truth, we are missing a term of R2 /r2 , where R is the radius of the star, and r is the distance to the star (the 4π’s cancel out, obviously). Since we are only measuring magnitude differences in each filter, this term can be separated (by logarit ...
... account the size of and distance to the star. So in truth, we are missing a term of R2 /r2 , where R is the radius of the star, and r is the distance to the star (the 4π’s cancel out, obviously). Since we are only measuring magnitude differences in each filter, this term can be separated (by logarit ...
astronomy - sfox4science
... Dwarf planets such as ______________, and other celestial objects such as __________, _________________, ________________________, and _____________________. The universe, all of space and everything in it, contains billions and billions of stars and galaxies. A galaxy is a giant structure that cont ...
... Dwarf planets such as ______________, and other celestial objects such as __________, _________________, ________________________, and _____________________. The universe, all of space and everything in it, contains billions and billions of stars and galaxies. A galaxy is a giant structure that cont ...
Testing Your Sky
... The darkness of the sky as seen from your favorite observing site can be either a help or a hindrance when it comes to observing the night. Under brightly lit conditions you'll not be able to view the fainter objects of the night. What follows is an exercise for determining darkness of the sky, a co ...
... The darkness of the sky as seen from your favorite observing site can be either a help or a hindrance when it comes to observing the night. Under brightly lit conditions you'll not be able to view the fainter objects of the night. What follows is an exercise for determining darkness of the sky, a co ...
Solutions3
... a: We get the ratio of stellar masses from the ratio of velocities: m1 /m2 = v2r /v1r , so the ratio of Star A’s mass to Star B’s is 22.4/5.4 = 4.1. b: Assuming i = 90 deg and circular orbits, the maximum radial velocities give the orbital velocities of the stars, and thus the distance they traverse ...
... a: We get the ratio of stellar masses from the ratio of velocities: m1 /m2 = v2r /v1r , so the ratio of Star A’s mass to Star B’s is 22.4/5.4 = 4.1. b: Assuming i = 90 deg and circular orbits, the maximum radial velocities give the orbital velocities of the stars, and thus the distance they traverse ...
The Hertzsprung-Russell Diagram
... 9. Label the following steps on your H-R diagram to show the series of changes that our sun has undergone since its formation 4.6 billion years ago. a. Originally, a big cloud of gas and dust called a nebula condensed to form a young, cool star called a red dwarf. In this first stage of life, our s ...
... 9. Label the following steps on your H-R diagram to show the series of changes that our sun has undergone since its formation 4.6 billion years ago. a. Originally, a big cloud of gas and dust called a nebula condensed to form a young, cool star called a red dwarf. In this first stage of life, our s ...
Stars…Giants, Supergiants, Dwarfs….
... you that one is much larger than the other, what can you say about the relative brightnesses? ...
... you that one is much larger than the other, what can you say about the relative brightnesses? ...
Teacher Guide - Astronomy Outreach at UT Austin
... The Cast Page the photon reporter: an energetic but sensitive photon journalist who is interviewing the Sun for her column in the Local Group Times. Sol the white dwarf: a kind and friendly star, our Sun at the end of his life. Sol used to be a yellow star. This interview takes place about 5 billion ...
... The Cast Page the photon reporter: an energetic but sensitive photon journalist who is interviewing the Sun for her column in the Local Group Times. Sol the white dwarf: a kind and friendly star, our Sun at the end of his life. Sol used to be a yellow star. This interview takes place about 5 billion ...
Chapter 11 Review
... Why is most of the mass of the solar system contained in the Sun? Briefly describe the protoplanet theory of planet formation. What name is given to a group of planets that orbit a star? Why do sunspots appear as dark areas on the Sun’s surface? What is solar wind? Describe two differences between t ...
... Why is most of the mass of the solar system contained in the Sun? Briefly describe the protoplanet theory of planet formation. What name is given to a group of planets that orbit a star? Why do sunspots appear as dark areas on the Sun’s surface? What is solar wind? Describe two differences between t ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.