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Solution
... 1c) The absorption spectrum of a star is completely determined by its chemical composition alone. True? N [The temperature plays also an important role] 1d) Because hydrogen is the most common element in stars, the Hydrogen Balmer absorption lines are the most prominent (dark) ones for all stars. Tr ...
... 1c) The absorption spectrum of a star is completely determined by its chemical composition alone. True? N [The temperature plays also an important role] 1d) Because hydrogen is the most common element in stars, the Hydrogen Balmer absorption lines are the most prominent (dark) ones for all stars. Tr ...
calculated using stefan`s law
... center of the star to its surface. - In a star energy generated at the core. - Energy spread in the form of photons - While moving towards the surface it faces a large number of frequent collision - Energy and direction of travel of the photon changes. • In case of sun T=30,000 years ...
... center of the star to its surface. - In a star energy generated at the core. - Energy spread in the form of photons - While moving towards the surface it faces a large number of frequent collision - Energy and direction of travel of the photon changes. • In case of sun T=30,000 years ...
The Change in Gravitational Potential Energy of Objects
... height, the GPE for 1kg object dropped on the Sun, (275m/s2 acceleration of free fall) subtracting for loss due to the atmosphere causing friction and other factors, is 275,000 Joules. What this means is that the potential energy for objects that fall on younger stars that have a lot more mass and h ...
... height, the GPE for 1kg object dropped on the Sun, (275m/s2 acceleration of free fall) subtracting for loss due to the atmosphere causing friction and other factors, is 275,000 Joules. What this means is that the potential energy for objects that fall on younger stars that have a lot more mass and h ...
Herbig Ae/Be Stars
... interior is too cool for H fusion • The star contracts so that gravitational potential energy makes up for energy lost from the surface ...
... interior is too cool for H fusion • The star contracts so that gravitational potential energy makes up for energy lost from the surface ...
PhD Qualifying Exam (2010) --
... (b) The equation of state for non-relativistic degeneracy gas can be written as P K 5 3 . Estimate the mass-radius relation of this degenerate star. (3 points) (c) As the mass increase, the electrons gradually become ultra-relativistic and the equation of state becomes P K 4 3 . Show that t ...
... (b) The equation of state for non-relativistic degeneracy gas can be written as P K 5 3 . Estimate the mass-radius relation of this degenerate star. (3 points) (c) As the mass increase, the electrons gradually become ultra-relativistic and the equation of state becomes P K 4 3 . Show that t ...
Luminosity
... Wien Displacement law By analysing a star’s spectrum, we can know in what wavelength the star emits more energy. The Sun emits more energy at ...
... Wien Displacement law By analysing a star’s spectrum, we can know in what wavelength the star emits more energy. The Sun emits more energy at ...
01 - Awtrey Middle School
... 1. What keeps a star from breaking apart? a. gravity b. energy c. mass d. density 2. During which stage of the life cycle is a star a ball of gas and dust? a. first stage b. second stage c. third stage d. last stage 3. What gas does hydrogen change into as a star becomes hotter? a. uranium b. helium ...
... 1. What keeps a star from breaking apart? a. gravity b. energy c. mass d. density 2. During which stage of the life cycle is a star a ball of gas and dust? a. first stage b. second stage c. third stage d. last stage 3. What gas does hydrogen change into as a star becomes hotter? a. uranium b. helium ...
So why are more massive stars more luminous?
... Increased pressure in a turbocharged engine allows the engine to burn fuel faster and generate more power Stars work the same way. ...
... Increased pressure in a turbocharged engine allows the engine to burn fuel faster and generate more power Stars work the same way. ...
Lecture21 - UCSB Physics
... Increased pressure in a turbocharged engine allows the engine to burn fuel faster and generate more power Stars work the same way. ...
... Increased pressure in a turbocharged engine allows the engine to burn fuel faster and generate more power Stars work the same way. ...
The Life Cycles of Stars
... A star’s life cycle is determined by its mass. The larger the mass, the shorter the life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust in which it is born. Over time, gravity pulls the hydrogen gas in the nebula together a ...
... A star’s life cycle is determined by its mass. The larger the mass, the shorter the life cycle. A star’s mass is determined by the amount of matter that is available in its nebula, the giant cloud of gas and dust in which it is born. Over time, gravity pulls the hydrogen gas in the nebula together a ...
Slide 1
... spectral type and colour) of a range of stars. An example is shown in Figure 1 (A). Stars at the bottom right are faint, cool and red while stars at the top left are bright, hot and blue. The period of time during which a star is in the process of core hydrogen fusion is called the main sequence. Th ...
... spectral type and colour) of a range of stars. An example is shown in Figure 1 (A). Stars at the bottom right are faint, cool and red while stars at the top left are bright, hot and blue. The period of time during which a star is in the process of core hydrogen fusion is called the main sequence. Th ...
Handout 30
... The band that runs diagonally through the Hertzsprung-Russell diagram and extends from cool, dim, red stars at the lower right to hot, bright, blue stars at the upper left. ...
... The band that runs diagonally through the Hertzsprung-Russell diagram and extends from cool, dim, red stars at the lower right to hot, bright, blue stars at the upper left. ...
ii. star clusters
... 1. 5 MS, type B: _____ million yrs. 2. 10 MS, type ___ : ____ million yrs. B. H runs low, _______ inc./temp decrease C. Luminosity stays ________ , so it *moves horizontally on HR-diagram D. Hot enough to fuse ________ elements ...
... 1. 5 MS, type B: _____ million yrs. 2. 10 MS, type ___ : ____ million yrs. B. H runs low, _______ inc./temp decrease C. Luminosity stays ________ , so it *moves horizontally on HR-diagram D. Hot enough to fuse ________ elements ...
Binary Star Par 1802 Word Document
... An unusual binary star system in the Orion nebula (Translated from Sterne und Weltraum 12/08 by G S Kelly) For many years astronomers have assumed that the stars in binary or multiple systems form at the same time. Now, however, a research team headed by Keivan Stassun at the Vanderbilt University i ...
... An unusual binary star system in the Orion nebula (Translated from Sterne und Weltraum 12/08 by G S Kelly) For many years astronomers have assumed that the stars in binary or multiple systems form at the same time. Now, however, a research team headed by Keivan Stassun at the Vanderbilt University i ...
80.BrainPopLifeCycleStars
... Brain Pop – Life Cycle of Stars 1. Stars __________ throughout their lives just like we do; only they live for ___________ of years. 2. They start out as clouds of gas and dust called __________ nurseries. The force of __________ within these clouds slowly pulls the particles together, causing dense ...
... Brain Pop – Life Cycle of Stars 1. Stars __________ throughout their lives just like we do; only they live for ___________ of years. 2. They start out as clouds of gas and dust called __________ nurseries. The force of __________ within these clouds slowly pulls the particles together, causing dense ...
Space Science Chapter 4 Reading Guide BIG IDEA: Our Sun is
... Fusion: Convection: Corona: Sunspot: Solar Wind: Light-year: Parallax: Nebula: Main Sequence: Neutron Star: Black Hole: Quasar: Section 1 : Key Concept: The Sun is our local star. 1. The Sun is the only star in our solar system. It contains 99.9% of the entire solar system. The Sun consists mostly o ...
... Fusion: Convection: Corona: Sunspot: Solar Wind: Light-year: Parallax: Nebula: Main Sequence: Neutron Star: Black Hole: Quasar: Section 1 : Key Concept: The Sun is our local star. 1. The Sun is the only star in our solar system. It contains 99.9% of the entire solar system. The Sun consists mostly o ...
Hertzsprung-Russell Diagram, Flux, Luminosity, Magnitude—10 Oct Outline •
... H‐R Diagram is plot of temperature & luminosity Stefan‐Boltzmann Law: A star is gets hotter and its size does not change. In the H‐R diagram, it moves up & left up & right up‐down left‐right not at all ...
... H‐R Diagram is plot of temperature & luminosity Stefan‐Boltzmann Law: A star is gets hotter and its size does not change. In the H‐R diagram, it moves up & left up & right up‐down left‐right not at all ...
Name: Period: _____ Stars Interactives and Activities
... 4. What are the two ways the x-axis can be labeled? ...
... 4. What are the two ways the x-axis can be labeled? ...
HR Diagram Lab Handout
... Background: You are about to create your own HR Diagram, a chart that revolutionized the study of stars. You will have a labeled chart and a series of points to plot. From these points, you can deduce a lot of information about stars! Please read the directions in each step of the activity closely b ...
... Background: You are about to create your own HR Diagram, a chart that revolutionized the study of stars. You will have a labeled chart and a series of points to plot. From these points, you can deduce a lot of information about stars! Please read the directions in each step of the activity closely b ...
ASTR3007/4007/6007, Tutorial 4: Deuterium Burning in Protostars
... When stars first form out of interstellar gas, they have radii substantially larger than main sequence stars of the same mass. As a result, their centres are too cool to drive nuclear reactions, and they are not in energy equilibrium. They therefore contract over a KelvinHelmholtz timescale. As they ...
... When stars first form out of interstellar gas, they have radii substantially larger than main sequence stars of the same mass. As a result, their centres are too cool to drive nuclear reactions, and they are not in energy equilibrium. They therefore contract over a KelvinHelmholtz timescale. As they ...
Life Cycle of Stars
... 1) Once your teacher has approved each word timeline and you have recorded them on the back of this page, you will create a large poster that visually displays the four life cycles. 2) Use your notes, RQs, video notes and a computer or phone to complete the following: a) Name of star stage b) Color ...
... 1) Once your teacher has approved each word timeline and you have recorded them on the back of this page, you will create a large poster that visually displays the four life cycles. 2) Use your notes, RQs, video notes and a computer or phone to complete the following: a) Name of star stage b) Color ...
Stellar Evolution and the Herzsprung-Russell Diagram
... photons (radiative transport) and boiling fluid motion (convective transport) • At all locations in the star, the pressure force from hot gas opposes the weight (due to gravity) of the mass above it “hydrostatic” or “gravitational equilibrium”. ...
... photons (radiative transport) and boiling fluid motion (convective transport) • At all locations in the star, the pressure force from hot gas opposes the weight (due to gravity) of the mass above it “hydrostatic” or “gravitational equilibrium”. ...
Lecture notes
... Stars form from collapsing clouds of interstellar gas. At first this collapse is essentially free fall, and the temperature increases as the density of the gas increases. Initially the cloud is transparent, but it becomes opaque at a temperature of a few hundred K and a density of 10−10 to 10−9 kg m ...
... Stars form from collapsing clouds of interstellar gas. At first this collapse is essentially free fall, and the temperature increases as the density of the gas increases. Initially the cloud is transparent, but it becomes opaque at a temperature of a few hundred K and a density of 10−10 to 10−9 kg m ...
Ch.15 star formation
... • Observations of star clusters show that star formation makes many more low-mass stars than high-mass stars ...
... • Observations of star clusters show that star formation makes many more low-mass stars than high-mass stars ...