ASTRONOMY 12 Problem Set 4 – Due March 10, 2016 1) After
... 3) Assume that a typical neutron star has a radius of 10 km and a mass of 1.4 M⊙ . a) If the neutron star can be approximated as a sphere of constant density, what is its gravitational binding energy in erg (see lecture 4 if you don’t remember how)? b) This much energy is radiated away as neutrinos ...
... 3) Assume that a typical neutron star has a radius of 10 km and a mass of 1.4 M⊙ . a) If the neutron star can be approximated as a sphere of constant density, what is its gravitational binding energy in erg (see lecture 4 if you don’t remember how)? b) This much energy is radiated away as neutrinos ...
Life Cycle of Stars
... Helium in the core of the star is still burning hot. Helium starts fusing together to create Carbon or Oxygen.Gravity keeps contracting the core to maintain equilibrium, and as the core contracts the atoms are packed together even tighter than before. The outer shell has expanded in an effort to hel ...
... Helium in the core of the star is still burning hot. Helium starts fusing together to create Carbon or Oxygen.Gravity keeps contracting the core to maintain equilibrium, and as the core contracts the atoms are packed together even tighter than before. The outer shell has expanded in an effort to hel ...
Earth
... standard distance from Earth) from 20 pc. • Since the star will be “closer”, it will be brighter. • A brighter star has a smaller magnitude • Thus, we expect an absolute magnitude less than ...
... standard distance from Earth) from 20 pc. • Since the star will be “closer”, it will be brighter. • A brighter star has a smaller magnitude • Thus, we expect an absolute magnitude less than ...
Star Sizes
... The Sun makes up 98% of the mass of the entire Solar System. If the Sun were hollow we could fit over 1 million Earths inside. You can line up 110 Earths across the surface of the Sun. We tend to think of our star, the Sun as being huge. When we compare it to objects here on Earth, or even Earth its ...
... The Sun makes up 98% of the mass of the entire Solar System. If the Sun were hollow we could fit over 1 million Earths inside. You can line up 110 Earths across the surface of the Sun. We tend to think of our star, the Sun as being huge. When we compare it to objects here on Earth, or even Earth its ...
Chapter20
... •After helium burning begins, a star has two sources of energy, hydrogen fusion in a shell around the core and helium fusion in the core •The core of the star becomes rich in carbon and oxygen nuclei, and the star's surface temperature goes up to become a horizontal branch star •Stars with masses gr ...
... •After helium burning begins, a star has two sources of energy, hydrogen fusion in a shell around the core and helium fusion in the core •The core of the star becomes rich in carbon and oxygen nuclei, and the star's surface temperature goes up to become a horizontal branch star •Stars with masses gr ...
ppt
... same density as the Earth, and whose diameter should be two hundred and fifty times larger than that of the Sun, would not, in consequence of its attraction, allow any of its rays to arrive at us; it is therefore possible that the largest luminous bodies in the universe may, through this cause, be i ...
... same density as the Earth, and whose diameter should be two hundred and fifty times larger than that of the Sun, would not, in consequence of its attraction, allow any of its rays to arrive at us; it is therefore possible that the largest luminous bodies in the universe may, through this cause, be i ...
Integrative Studies 410 Our Place in the Universe
... Where Stars come from: the Interstellar Medium • Gas – Single atoms and molecules – Mostly hydrogen (90%), 9% helium; deficient in heavier elements ...
... Where Stars come from: the Interstellar Medium • Gas – Single atoms and molecules – Mostly hydrogen (90%), 9% helium; deficient in heavier elements ...
practice exam #1
... 11. What do astronomers suspect is the reason for the high-density planets being close to the Sun, and the low-density planets further away? a. The low-density planets all have weaker gravity, so they have moved further away b. The high-density planets have very strong magnetic fields that pull them ...
... 11. What do astronomers suspect is the reason for the high-density planets being close to the Sun, and the low-density planets further away? a. The low-density planets all have weaker gravity, so they have moved further away b. The high-density planets have very strong magnetic fields that pull them ...
The_Birth_of_a_Star
... increases – like a skater who pulls her arms in while spinning 2. If nothing slow the rotation down, the speed will increase until the star is torn apart 3. One way that rotational energy is diminished is by the star splitting into a double star system 4. Another rout is for the star to spin off mat ...
... increases – like a skater who pulls her arms in while spinning 2. If nothing slow the rotation down, the speed will increase until the star is torn apart 3. One way that rotational energy is diminished is by the star splitting into a double star system 4. Another rout is for the star to spin off mat ...
Locating Objects in Space
... brightness, energy output (power), surface temperature, & composition ...
... brightness, energy output (power), surface temperature, & composition ...
Stars - Quia
... What is a star? - body of gasses that give off “tons of” energy (light & heat) - clusters = those little specks in the sky that we see may really be more than one star…. ...
... What is a star? - body of gasses that give off “tons of” energy (light & heat) - clusters = those little specks in the sky that we see may really be more than one star…. ...
PowerPoint File
... In post-Main-Sequence evolution, what you see on the surface is not a good indicator of what is happening deep in the interior ...
... In post-Main-Sequence evolution, what you see on the surface is not a good indicator of what is happening deep in the interior ...
Definitions
... detect light signals and convert these into electrical signals that can be multiplied, digitised, analysed and stored electronically. A CCD – is a device for the movement of electrical charge, usually form the device to an area where the charge can be manipulated PE effect – electrons are emitted fr ...
... detect light signals and convert these into electrical signals that can be multiplied, digitised, analysed and stored electronically. A CCD – is a device for the movement of electrical charge, usually form the device to an area where the charge can be manipulated PE effect – electrons are emitted fr ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... Extension Worksheet – Option E, Worksheet 2, HL only ...
... Extension Worksheet – Option E, Worksheet 2, HL only ...
Stars Notes
... • Large stars (1.4 times larger than our sun) become super giants instead of red giants ...
... • Large stars (1.4 times larger than our sun) become super giants instead of red giants ...
Quiz Solution: 1 April 2013 What does it mean when an astronomer
... Quiz Solution: 1 April 2013 What does it mean when an astronomer says that a star "moves" from one place to another on an H-R Diagram? Can you provide an example of this? As stars evolve and change structure, their radii and temperatures also change. Since a star's luminosity is dependent on both te ...
... Quiz Solution: 1 April 2013 What does it mean when an astronomer says that a star "moves" from one place to another on an H-R Diagram? Can you provide an example of this? As stars evolve and change structure, their radii and temperatures also change. Since a star's luminosity is dependent on both te ...