Scales of the Universe
... • The Main Sequence is just a manifestation of the relationship between Mass and Luminosity: L ~ M3.5 • The more massive the star the larger its weight • The larger the weight, the larger the pressure • The larger the pressure, the higher the temperature • The higher the temperature, the more energe ...
... • The Main Sequence is just a manifestation of the relationship between Mass and Luminosity: L ~ M3.5 • The more massive the star the larger its weight • The larger the weight, the larger the pressure • The larger the pressure, the higher the temperature • The higher the temperature, the more energe ...
The Hertzsprung-Russell Diagram
... place as a star evolves. Most stars are on the Main Sequence because that is where stars spend most of their lives, burning hydrogen to helium through nuclear reactions. As stars live out their lives, changes in the structure of the star are reflected in changes in stars temperatures, sizes and lumi ...
... place as a star evolves. Most stars are on the Main Sequence because that is where stars spend most of their lives, burning hydrogen to helium through nuclear reactions. As stars live out their lives, changes in the structure of the star are reflected in changes in stars temperatures, sizes and lumi ...
Star Classification Lab
... Using the information provided in Table 7–2 and colored pencils, shade in each temperature region of the Hertzsprung-Russell diagram with the correct star color. In bold letters, label the following regions of your Hertzsprung-Russell diagram: White Dwarfs, Red Dwarfs, Red Giants, Main Sequence Sta ...
... Using the information provided in Table 7–2 and colored pencils, shade in each temperature region of the Hertzsprung-Russell diagram with the correct star color. In bold letters, label the following regions of your Hertzsprung-Russell diagram: White Dwarfs, Red Dwarfs, Red Giants, Main Sequence Sta ...
PH507 - University of Kent
... Depending on their initial masses and the rate of mass loss, they may explode as yellow hypergiants or luminous blue variables, or they may become Wolf-Rayet stars before exploding in a core collapse supernova. Identifying whether Deneb is currently evolving towards a red supergiant or is currently ...
... Depending on their initial masses and the rate of mass loss, they may explode as yellow hypergiants or luminous blue variables, or they may become Wolf-Rayet stars before exploding in a core collapse supernova. Identifying whether Deneb is currently evolving towards a red supergiant or is currently ...
Stellar Structure, Polytropes, Standard Stellar Model
... ρ = K/2πGr 2; R = ∞; m = 2Kr/G n = ∞, γ ′ = 1. ...
... ρ = K/2πGr 2; R = ∞; m = 2Kr/G n = ∞, γ ′ = 1. ...
Abstract Submitted for the PHY599 Meeting of
... Abstract Submitted for the PHY599 Meeting of USB Dept. of Physics and Astronomy ...
... Abstract Submitted for the PHY599 Meeting of USB Dept. of Physics and Astronomy ...
NASC 1100
... A star is born when its core temperature exceeds 10 million K hydrogen fusion begins. The star’s interior stabilizes: thermal energy generated by fusion maintains the balance between gravity and pressure. The star becomes a main-sequence star. ...
... A star is born when its core temperature exceeds 10 million K hydrogen fusion begins. The star’s interior stabilizes: thermal energy generated by fusion maintains the balance between gravity and pressure. The star becomes a main-sequence star. ...
Astrophysics
... system which ranks them in order of surface temperature (the letters were re-ordered from an older system): ...
... system which ranks them in order of surface temperature (the letters were re-ordered from an older system): ...
Homework 5
... Due November 9, 2012 at 5 p.m., either electronically or on paper. 1. What is a stellar association, how big are they, how many stars do they contain, how long do they last? Finally, what is their fate? ...
... Due November 9, 2012 at 5 p.m., either electronically or on paper. 1. What is a stellar association, how big are they, how many stars do they contain, how long do they last? Finally, what is their fate? ...
ppt
... The force of gravity is always directed toward the centre of the star. Why does it not collapse? The opposing force is the gas pressure. As the star collapses, the pressure increases, pushing the gas back out. ...
... The force of gravity is always directed toward the centre of the star. Why does it not collapse? The opposing force is the gas pressure. As the star collapses, the pressure increases, pushing the gas back out. ...
Open clusters
... compared to fainter objects. How does this affect our ‘census’ of other stellar properties? ...
... compared to fainter objects. How does this affect our ‘census’ of other stellar properties? ...
Star - Holy Family Regional School
... group has enough mass, pressure causes the temperature to increase. ...
... group has enough mass, pressure causes the temperature to increase. ...
THE HERTZSPRUNG-RUSSELL DIAGRAM (H
... NOTE: Absolute Magnitude IS THE SAME THING AS LUMINOSITY ON THE GRAPH DEFINE: absolute magnitude (Pg. 372 if you don’t know) ...
... NOTE: Absolute Magnitude IS THE SAME THING AS LUMINOSITY ON THE GRAPH DEFINE: absolute magnitude (Pg. 372 if you don’t know) ...
Different types of YSOs
... newly-formed star that still has a surrounding dust disk • YSO has achieved H to He fusion and falls on Main Sequence trend ...
... newly-formed star that still has a surrounding dust disk • YSO has achieved H to He fusion and falls on Main Sequence trend ...
Linking Asteroids and Meteorites through Reflectance
... • A star-forming cloud is called a molecular cloud because low temperatures allow Hydrogen to form Hydrogen molecules (H2) • Temperatures like 10-50 K ...
... • A star-forming cloud is called a molecular cloud because low temperatures allow Hydrogen to form Hydrogen molecules (H2) • Temperatures like 10-50 K ...
The Hertzsprung-Russell Diagram
... Most stars lie in the main sequence because if a star is hotter it is brighter. Thus you would expect stars of the same size but different temperatures to form a diagonal line since “hotter means brighter” That Main-Sequence is steeper than a ‘same-size diagonal” shows that larger mass ‘normal’ star ...
... Most stars lie in the main sequence because if a star is hotter it is brighter. Thus you would expect stars of the same size but different temperatures to form a diagonal line since “hotter means brighter” That Main-Sequence is steeper than a ‘same-size diagonal” shows that larger mass ‘normal’ star ...
Star Types
... The H-R diagram “The stars are distant and unobtrusive, but bright and enduring as our fairest and most ...
... The H-R diagram “The stars are distant and unobtrusive, but bright and enduring as our fairest and most ...
Mr. Scharff
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
... Introduction. The Hertzsprung-Russell diagram is actually a graph that illustrates the relationship that exists between the average surface temperature of stars and their absolute magnitude, which is how bright they would appear to be if they were al the same distance away. Rather than speak of the ...
STARS
... contraction and the result is the beginning of nuclear fusion. Nuclear fusion gives the star enough electromagnetic energy to begin shining and a star is born ...
... contraction and the result is the beginning of nuclear fusion. Nuclear fusion gives the star enough electromagnetic energy to begin shining and a star is born ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • Smallest stars on the main sequence fall on the bottom right • Largest stars on main sequence fall on the top left • At the same size, hotter stars are more luminous than cooler ones • At the same temperature, larger stars are more luminous than smaller ones ...
... • Smallest stars on the main sequence fall on the bottom right • Largest stars on main sequence fall on the top left • At the same size, hotter stars are more luminous than cooler ones • At the same temperature, larger stars are more luminous than smaller ones ...
Science 8 Name: Unit 2 Astronomy Date: Period: LAB
... 1. Using the data in the table, plot the location of each star and label it with its name. 2. Complete the data table based on the location of the star on the HR Diagram. 3. Color the columns of the HR Diagram. 4. Answer the questions. Background: The Hertzsprung-Russell Diagram is actually an elabo ...
... 1. Using the data in the table, plot the location of each star and label it with its name. 2. Complete the data table based on the location of the star on the HR Diagram. 3. Color the columns of the HR Diagram. 4. Answer the questions. Background: The Hertzsprung-Russell Diagram is actually an elabo ...
Star Formation
... • The small mass of atoms creates very weak gravity. • Gravity can pull atoms and molecules together. • Concentrations equal to 1 million solar masses can form giant molecular clouds over 100 ly across. ...
... • The small mass of atoms creates very weak gravity. • Gravity can pull atoms and molecules together. • Concentrations equal to 1 million solar masses can form giant molecular clouds over 100 ly across. ...
Astrophysics 11 - HR Diagram
... • But AQA seem to prefer the absolute magnitude scale going from -15 to 10. ...
... • But AQA seem to prefer the absolute magnitude scale going from -15 to 10. ...
Temperature Gradient - FIU Faculty Websites
... dT /dr will be determined primarily by the opacity hκi and the luminosity L(r). Large values of either of these two may require large dT /dr’s, and the question then arises whether the temperature gradient can increase without bound. The answer is it cannot. Once the temperature gradient that is nee ...
... dT /dr will be determined primarily by the opacity hκi and the luminosity L(r). Large values of either of these two may require large dT /dr’s, and the question then arises whether the temperature gradient can increase without bound. The answer is it cannot. Once the temperature gradient that is nee ...
Astronomy 2
... Life Cycle of Stars Average to small stars collapse again after C fuel is used up → white dwarf (Earth size) Large stars (at least 7 times our sun) when fusion (of carbon) stops, a central iron core is left, intense gravitational energy causes further collapse, creates heavier elements → explosion ...
... Life Cycle of Stars Average to small stars collapse again after C fuel is used up → white dwarf (Earth size) Large stars (at least 7 times our sun) when fusion (of carbon) stops, a central iron core is left, intense gravitational energy causes further collapse, creates heavier elements → explosion ...