8.3 Stars
... Main Sequence Star 90% of all stars in the universe; when stars radiate (shine) energy into space ...
... Main Sequence Star 90% of all stars in the universe; when stars radiate (shine) energy into space ...
Section 27.2
... White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and bright and some can be seen without a telescope. Can you locate blue giants on the H-R diagram? ...
... White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and bright and some can be seen without a telescope. Can you locate blue giants on the H-R diagram? ...
powerpoints - Georgia Southern University Astrophysics
... • The elements and their relative abundances are different for Type Ia and Type II remnants because the progenitors are different. Type Ia remnants from white dwarfs - usually show relatively strong Si, S, Ar, Ca, and Fe, and weak O, Ne, and Mg lines; Type II remnants - from massive stars generally ...
... • The elements and their relative abundances are different for Type Ia and Type II remnants because the progenitors are different. Type Ia remnants from white dwarfs - usually show relatively strong Si, S, Ar, Ca, and Fe, and weak O, Ne, and Mg lines; Type II remnants - from massive stars generally ...
Powerpoint Presentation (large file)
... exhausted in the core of a main-sequence star • This leaves a core of nearly pure helium surrounded by a shell through which hydrogen fusion works its way outward in the star • The core shrinks and becomes hotter, while the star’s outer layers expand and cool • The result is a red giant star ...
... exhausted in the core of a main-sequence star • This leaves a core of nearly pure helium surrounded by a shell through which hydrogen fusion works its way outward in the star • The core shrinks and becomes hotter, while the star’s outer layers expand and cool • The result is a red giant star ...
stars - allenscience
... Small sized stars may last for 100 billion years. Medium sized stars may last for 10 billion years. Large stars (10 times the mass of our sun) use their hydrogen fuel faster and may only last a few million years. However they are 5000 times brighter than our sun. Extremely large stars (30 times the ...
... Small sized stars may last for 100 billion years. Medium sized stars may last for 10 billion years. Large stars (10 times the mass of our sun) use their hydrogen fuel faster and may only last a few million years. However they are 5000 times brighter than our sun. Extremely large stars (30 times the ...
Astr 3020 Cosmology Samples for Exam 2 Foundations of Modern
... c) for any process entropy must change, either increasing or decreasing depending on the process. d) for any process entropy must remain constant. ...
... c) for any process entropy must change, either increasing or decreasing depending on the process. d) for any process entropy must remain constant. ...
the interstellar medium - Howard University Physics and Astronomy
... • Hydrogen constitutes about 90% of all the atoms in the Sun and in newly forming stars. • Helium is the next most abundant (about 9%); all heaver elements constitute about 1% (by number of atoms). • The Sun’s original supply of hydrogen is sufficient to supply its energy output for 10 billion years ...
... • Hydrogen constitutes about 90% of all the atoms in the Sun and in newly forming stars. • Helium is the next most abundant (about 9%); all heaver elements constitute about 1% (by number of atoms). • The Sun’s original supply of hydrogen is sufficient to supply its energy output for 10 billion years ...
Astronomy 104: Homework Set 5 Due: Monday, March 16, 2015
... b) In a log-log plot like the one you produced, a straight light implies a power-law profile. Do the data for each of the density laws you plotted follow a straight line? c) Determine the slope of the line that best fits each of the two density profiles. Keeping in mind that the Bulge of our Galaxy ...
... b) In a log-log plot like the one you produced, a straight light implies a power-law profile. Do the data for each of the density laws you plotted follow a straight line? c) Determine the slope of the line that best fits each of the two density profiles. Keeping in mind that the Bulge of our Galaxy ...
Slide 1
... 2. The stars are so far away that the change of their positions in relation to the Earth is very hard to notice in the extremes of the Earth’s orbit. What is more, for a long time it was thought that the Earth is the center of the universe, so this way of checking the intervariance of the stars’ pos ...
... 2. The stars are so far away that the change of their positions in relation to the Earth is very hard to notice in the extremes of the Earth’s orbit. What is more, for a long time it was thought that the Earth is the center of the universe, so this way of checking the intervariance of the stars’ pos ...
Volume 20 Number 10 September 2012
... In 2010, observers reported the most massive stars ever seen, - it exceeded what many astronomers thought was a maximum about 150 times the mass of the Sun. The heavyweight champs resided 160,000 light-years from Earth in Radcliffe 136, a dense star cluster within the Large Magellanic Cloud, the bri ...
... In 2010, observers reported the most massive stars ever seen, - it exceeded what many astronomers thought was a maximum about 150 times the mass of the Sun. The heavyweight champs resided 160,000 light-years from Earth in Radcliffe 136, a dense star cluster within the Large Magellanic Cloud, the bri ...
The Life Cycle of a Star Webquest:
... *** Scroll back up and click on it. 6. How does a star like the sun become a Red Giant? _________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ 7. W ...
... *** Scroll back up and click on it. 6. How does a star like the sun become a Red Giant? _________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ 7. W ...
Today`s Powerpoint
... Finally, fusion starts, stopping collapse: a star! Star reaches Main Sequence at end of Hayashi Track ...
... Finally, fusion starts, stopping collapse: a star! Star reaches Main Sequence at end of Hayashi Track ...
Scientists classify stars by
... 2. If the remaining mass of the star is about 1.4 times that of our Sun, it will collapse further to become a neutron star. 3. If the remaining mass of the star is more than about three times that of the Sun, it will collapse and what is left behind is an intense region of gravity called a black hol ...
... 2. If the remaining mass of the star is about 1.4 times that of our Sun, it will collapse further to become a neutron star. 3. If the remaining mass of the star is more than about three times that of the Sun, it will collapse and what is left behind is an intense region of gravity called a black hol ...
Variable Stars: Pulsation, Evolution and applications to Cosmology
... Recall equations of stellar structure. Nuclear energy generation rate ε(ρ,T) slowly changes the composition decreasing the amount of Hydrogen and increasing the amount of Helium on a nuclear time scale – the characteristic time for stellar properties to change as a result of nuclear burning: tnuc ~ ...
... Recall equations of stellar structure. Nuclear energy generation rate ε(ρ,T) slowly changes the composition decreasing the amount of Hydrogen and increasing the amount of Helium on a nuclear time scale – the characteristic time for stellar properties to change as a result of nuclear burning: tnuc ~ ...
Stellar Evolution - Hays High Indians
... concentrated in the central regions of the galaxy. The X-ray source could be another example of a veiled black hole associated with a Type 2 Quasar. This discovery adds to a CXO 0312 Fiore P3 (CXOUJ031238.9growing body of evidence that our 765134): A possible Type 2 quasar veiled black hole.(Credit: ...
... concentrated in the central regions of the galaxy. The X-ray source could be another example of a veiled black hole associated with a Type 2 Quasar. This discovery adds to a CXO 0312 Fiore P3 (CXOUJ031238.9growing body of evidence that our 765134): A possible Type 2 quasar veiled black hole.(Credit: ...
E2 Stellar radiation and stellar types
... spectrum as all the gas is ionised so there are no bound electrons orbiting around the nuclei in the star. Thus absorption spectrums can also tell us something about the temperature of a star. ...
... spectrum as all the gas is ionised so there are no bound electrons orbiting around the nuclei in the star. Thus absorption spectrums can also tell us something about the temperature of a star. ...
Chapter 28 Stars and Their Characteristics
... Andromeda Galaxy, is 21,000,000,000,000,000,000 km. This is a number so large that it becomes hard to write and hard to interpret. So astronomers use other units of distance. Andromeda Spiral Galaxy ...
... Andromeda Galaxy, is 21,000,000,000,000,000,000 km. This is a number so large that it becomes hard to write and hard to interpret. So astronomers use other units of distance. Andromeda Spiral Galaxy ...
Four Homework Assignments
... big bang, carbon-burning, etc.) where each of the elements in the Sun or interstellar medium up to an atomic number (Z) of 26 are created. 17. In our discussion of the “ignition mass” for a given stage of thermonuclear burning, we derived a formula that seemed to work reasonably well for the main-se ...
... big bang, carbon-burning, etc.) where each of the elements in the Sun or interstellar medium up to an atomic number (Z) of 26 are created. 17. In our discussion of the “ignition mass” for a given stage of thermonuclear burning, we derived a formula that seemed to work reasonably well for the main-se ...
