Friday, November 7 - Otterbein University
... Hydrostatic Equilibrium • Two forces compete: gravity (inward) and energy pressure due to heat generated (outward) • Stars neither shrink nor expand, they are in hydrostatic equilibrium, i.e. the forces are equally strong ...
... Hydrostatic Equilibrium • Two forces compete: gravity (inward) and energy pressure due to heat generated (outward) • Stars neither shrink nor expand, they are in hydrostatic equilibrium, i.e. the forces are equally strong ...
galaxy_physics
... • Need tracer of near-nuclear velocity field – Defines potential M(r) – If more than M(stars) dark mass present ...
... • Need tracer of near-nuclear velocity field – Defines potential M(r) – If more than M(stars) dark mass present ...
Slide 1 - Beverley High School
... • These high mass stars finish their lives in massive supernova explosions • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
... • These high mass stars finish their lives in massive supernova explosions • At the bottom right the stars are cool. These low mass stars are very long lived as they use their fuel so slowly. Very low mass M stars live many billions of years and will simply run out of fuel without dramatic events. ...
What is a supernova - University of Warwick
... If the white dwarf reaches the Chandrasekhar limit, 1.4 times the mass of the Sun, the pressure in the core will cause carbon and oxygen atoms to fuse resulting in an explosion! ...
... If the white dwarf reaches the Chandrasekhar limit, 1.4 times the mass of the Sun, the pressure in the core will cause carbon and oxygen atoms to fuse resulting in an explosion! ...
31_Finding Earths
... Not all places in the galaxy may be equivalent. The chance for life may be highest in a particular region of the galaxy known as the galactic habitable zone. Where do you want to life in the galaxy? ...
... Not all places in the galaxy may be equivalent. The chance for life may be highest in a particular region of the galaxy known as the galactic habitable zone. Where do you want to life in the galaxy? ...
Galaxy Notes Presentation
... Mass is 1,000 to 2,000 billion times the mass of the Sun The Sun lies a little more than 30,000 light years from the center Cannot actually count the number of stars in the galaxy, can estimate as roughly 100 billion ...
... Mass is 1,000 to 2,000 billion times the mass of the Sun The Sun lies a little more than 30,000 light years from the center Cannot actually count the number of stars in the galaxy, can estimate as roughly 100 billion ...
File - Adopt A Constellation
... • A red giant is a relatively old star whose diameter is about 100 times bigger than it was originally, and had become cooler. • They are frequently red/orange in color. • Our sun will eventually become a red giant! • Stars spend approximately a few thousand to 1 billion years as a red giant. • A bl ...
... • A red giant is a relatively old star whose diameter is about 100 times bigger than it was originally, and had become cooler. • They are frequently red/orange in color. • Our sun will eventually become a red giant! • Stars spend approximately a few thousand to 1 billion years as a red giant. • A bl ...
Chapter 19 Notes Stars Stars are bright balls of gas that are trillions
... f. When stars get old i. While many stars become white dwarves as they get older, very massive stars can become strange objects like pulsars, supernovas, black holes and neutron stars. ii. Supernovas 1. Massive stars use their hydrogen much faster than stars like the sun do. 2. At the end of their l ...
... f. When stars get old i. While many stars become white dwarves as they get older, very massive stars can become strange objects like pulsars, supernovas, black holes and neutron stars. ii. Supernovas 1. Massive stars use their hydrogen much faster than stars like the sun do. 2. At the end of their l ...
The Milky Way
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
Galaxies
... central bulge • Forms spiral arms that contain a lot of gas and dust • Population I stars are found in the spiral arms – these are young O and B main-sequence stars – they are often found in open clusters ...
... central bulge • Forms spiral arms that contain a lot of gas and dust • Population I stars are found in the spiral arms – these are young O and B main-sequence stars – they are often found in open clusters ...
Eclipsing Binaries
... If the binary stars are eclipsing, then it is guaranteed that we are in the orbital plane. This means that the maximum radial velocity on the velocity plot gives us the orbital velocity. Now we have “a” and we have “P”. We can get rid of one of the “M”s because we know how they are related. ...
... If the binary stars are eclipsing, then it is guaranteed that we are in the orbital plane. This means that the maximum radial velocity on the velocity plot gives us the orbital velocity. Now we have “a” and we have “P”. We can get rid of one of the “M”s because we know how they are related. ...
What is a Scientist? - Cockeysville Middle School
... Stars vary greatly in their sizes. List five sizes of stars from smallest to largest and a fact related to each type of star. ...
... Stars vary greatly in their sizes. List five sizes of stars from smallest to largest and a fact related to each type of star. ...
spectral-type
... If we want learn about the number of absorbers for a given element (say, calcium, iron, gold, etc) then we need to know the temperature of the star. If we know the temperature we can account for its effect and… The line strength will only depend on the Number of Absorbers. ...
... If we want learn about the number of absorbers for a given element (say, calcium, iron, gold, etc) then we need to know the temperature of the star. If we know the temperature we can account for its effect and… The line strength will only depend on the Number of Absorbers. ...
Document
... stay for a while, and eventually move through giant stages before becoming white dwarfs. • Higher mass stars move rapidly off the main sequence and into the giant stages, eventually exploding in a supernova. ...
... stay for a while, and eventually move through giant stages before becoming white dwarfs. • Higher mass stars move rapidly off the main sequence and into the giant stages, eventually exploding in a supernova. ...
Chapter 13: The Death of Stars
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
Document
... 20. Which of the following nuclear fuels does a one solar mass star use over the course of its entire evolution? a. hydrogen, b. hydrogen and helium, c. hydrogen, helium and carbon d. hydrogen, helium, carbon, and neon, e. hydrogen, helium, carbon, neon, and oxygen. 21. A planetary nebula is a. the ...
... 20. Which of the following nuclear fuels does a one solar mass star use over the course of its entire evolution? a. hydrogen, b. hydrogen and helium, c. hydrogen, helium and carbon d. hydrogen, helium, carbon, and neon, e. hydrogen, helium, carbon, neon, and oxygen. 21. A planetary nebula is a. the ...
Week 11 Answers
... (2) The precession of the direction of the long axis of Mercury’s orbit. (3) The gravitational redshift of light emitted from the surface of a white dwarf (time dilation). (4) Clocks run at different speeds when they are closer to or farther from the Earth’s center, including clocks in GPS satellite ...
... (2) The precession of the direction of the long axis of Mercury’s orbit. (3) The gravitational redshift of light emitted from the surface of a white dwarf (time dilation). (4) Clocks run at different speeds when they are closer to or farther from the Earth’s center, including clocks in GPS satellite ...
Stars - Montville.net
... White Dwarfs 7. Planetary Nebula- The outer parts of a dying star drifting into outer space forming a glowing cloud of gas 8. White dwarf- the core of a dying star the size of Earth with as much mass as the sun. (1 spoonful has as much mass as a large ...
... White Dwarfs 7. Planetary Nebula- The outer parts of a dying star drifting into outer space forming a glowing cloud of gas 8. White dwarf- the core of a dying star the size of Earth with as much mass as the sun. (1 spoonful has as much mass as a large ...
LT 9: I can describe how a protostar becomes a star.
... – Pulsating stars: change in brightness as they expand (cool, dim) and contract (hot, bright) – Cepheid variables: the longer their cycle is the larger their absolute magnitude is – Eclipsing binary: 2 stars of unequal brightness that revolve around each other and appear to change brightness Pulsa ...
... – Pulsating stars: change in brightness as they expand (cool, dim) and contract (hot, bright) – Cepheid variables: the longer their cycle is the larger their absolute magnitude is – Eclipsing binary: 2 stars of unequal brightness that revolve around each other and appear to change brightness Pulsa ...
Astro 10 Practice Test 3
... a. They have evolved into emission nebulae and HII regions. b. The helium in their cores has all been used up, which means they’ve started buring hydrogen for the first time. c. They have been ejected from the cluster by gravitational encounters with other stars. d. They’ve run out of hydrogen to bu ...
... a. They have evolved into emission nebulae and HII regions. b. The helium in their cores has all been used up, which means they’ve started buring hydrogen for the first time. c. They have been ejected from the cluster by gravitational encounters with other stars. d. They’ve run out of hydrogen to bu ...
Stellar kinematics
Stellar kinematics is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful information about the origin and age of a star, as well as the structure and evolution of the surrounding part of the Milky Way.In astronomy, it is widely accepted that most stars are born within molecular clouds known as stellar nurseries. The stars formed within such a cloud compose open clusters containing dozens to thousands of members. These clusters dissociate over time. Stars that separate themselves from the cluster's core are designated as members of the cluster's stellar association. If the remnant later drifts through the Milky Way as a coherent assemblage, then it is termed a moving group.