20040907103511001-148699
... Rotation period has increased by factor of 10 during life Viscosity too small to reduce rotation homogeneously throughout the Sun Magnetic Ap stars rotate much slower than „normal“ A stars Did MRI reduce the internal rotation of Sun and Ap stars? ...
... Rotation period has increased by factor of 10 during life Viscosity too small to reduce rotation homogeneously throughout the Sun Magnetic Ap stars rotate much slower than „normal“ A stars Did MRI reduce the internal rotation of Sun and Ap stars? ...
Movements of Objects in Space
... 2. The Moon is orbiting around the Earth [one orbit every 27.3 days]. ...
... 2. The Moon is orbiting around the Earth [one orbit every 27.3 days]. ...
General Astronomy Dark Matter
... So what is this dark stuff? 1. It doesn’t emit light, down to the sensitivity limit of current telescopes (around 29th magnitude). 2. It doesn’t block the light from background objects to any appreciable extent, at any wavelength. 3. It is more spread-out than stars. Stars are mostly found in galax ...
... So what is this dark stuff? 1. It doesn’t emit light, down to the sensitivity limit of current telescopes (around 29th magnitude). 2. It doesn’t block the light from background objects to any appreciable extent, at any wavelength. 3. It is more spread-out than stars. Stars are mostly found in galax ...
Death of Massive Stars
... • Light moving outwards in a gravitational field will lose energy – it becomes redder; light falling in becomes bluer. This is gravitational red/blue shift ...
... • Light moving outwards in a gravitational field will lose energy – it becomes redder; light falling in becomes bluer. This is gravitational red/blue shift ...
ppt
... Close-in „small“ objects could even be discovered in „alarm mode“ The small planet: CoRoT turns out to be the transit with smallest radius – CoRoT-7b • First planet under 11 Earth masses with both mass and ...
... Close-in „small“ objects could even be discovered in „alarm mode“ The small planet: CoRoT turns out to be the transit with smallest radius – CoRoT-7b • First planet under 11 Earth masses with both mass and ...
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 ...
Northern Circumpolar Constellations
... Dipper) • Ursa Minor, the Little Bear • Cassiopeia, the Queen of Ethiopia • Cepheus, the King of Ethiopia • Draco the Dragon ...
... Dipper) • Ursa Minor, the Little Bear • Cassiopeia, the Queen of Ethiopia • Cepheus, the King of Ethiopia • Draco the Dragon ...
Lecture 11
... They start to burn and release energy. Pressure rises and temperature rise, but volume does not increase. P and T rise some more. Finally, P gets so great it lifts the degeneracy and thermal pressure equilibrium is re-established. This is the “He Flash” Could blow a star apart, but it doesn’t. ...
... They start to burn and release energy. Pressure rises and temperature rise, but volume does not increase. P and T rise some more. Finally, P gets so great it lifts the degeneracy and thermal pressure equilibrium is re-established. This is the “He Flash” Could blow a star apart, but it doesn’t. ...
May 2013 - Joliet Junior College
... The stars of late spring and early summer are now in the evening sky and we’ve lost Orion and the winter constellations until next year - unless you want to go stargazing in the middle of the night. High In the mid-evening sky is the easiest group of stars to find the stars of the Big Dipper. The Bi ...
... The stars of late spring and early summer are now in the evening sky and we’ve lost Orion and the winter constellations until next year - unless you want to go stargazing in the middle of the night. High In the mid-evening sky is the easiest group of stars to find the stars of the Big Dipper. The Bi ...
Historical Overview of the Universe
... fall into “dark matter halos”’ in which the first objects and galaxies can be formed. This occurs about a billion years after the big bang. The newly formed stars in the first galaxies obtain their luminosity from nuclear fusion processes, thereby breeding heavy elements that become released via mas ...
... fall into “dark matter halos”’ in which the first objects and galaxies can be formed. This occurs about a billion years after the big bang. The newly formed stars in the first galaxies obtain their luminosity from nuclear fusion processes, thereby breeding heavy elements that become released via mas ...
Test 3, February 7, 2007 - Brock physics
... 41. According to the General Theory of Relativity, mass/energy curves spacetime. (a) True. (b) False. 42. In order to detect a black hole one looks for (a) a spot into which stars and their planets fall. (b) a binary system where a companion star is not visible but has a mass greater than 3 solar ma ...
... 41. According to the General Theory of Relativity, mass/energy curves spacetime. (a) True. (b) False. 42. In order to detect a black hole one looks for (a) a spot into which stars and their planets fall. (b) a binary system where a companion star is not visible but has a mass greater than 3 solar ma ...
eventful-szkody
... low mass stars comprise 70% of stars in Milky Way flare physics and planet habitability, flares may act as a ‘fog’ for other transients • flaring rate depends on flare energy, spectral type, stellar age, line of sight • model can be used to ‘observe’ the Galaxy and predict the number of flares seen ...
... low mass stars comprise 70% of stars in Milky Way flare physics and planet habitability, flares may act as a ‘fog’ for other transients • flaring rate depends on flare energy, spectral type, stellar age, line of sight • model can be used to ‘observe’ the Galaxy and predict the number of flares seen ...
acta 20 - Pontifical Academy of Sciences
... burning in the Sun were to turn off, the Sun would slowly deflate as it lost heat – but its centre would get hotter as well as denser. Gravity drives things further from equilibrium. And even in the early amorphous stage of cosmic expansion, before stars formed, gravity was enhancing the density con ...
... burning in the Sun were to turn off, the Sun would slowly deflate as it lost heat – but its centre would get hotter as well as denser. Gravity drives things further from equilibrium. And even in the early amorphous stage of cosmic expansion, before stars formed, gravity was enhancing the density con ...
Stars - Red, Blue, Old, New pt.4
... For the Lower Mass Stars--about 1 to 8 Solar Masses • The star gets to the point where it has a carbon core. • Core collapses but not hot enough to initiate carbon to oxygen fusion. • Most of star’s mass collapses to “degenerate matter” and star becomes a white dwarf. • Outer layers escape in a “pl ...
... For the Lower Mass Stars--about 1 to 8 Solar Masses • The star gets to the point where it has a carbon core. • Core collapses but not hot enough to initiate carbon to oxygen fusion. • Most of star’s mass collapses to “degenerate matter” and star becomes a white dwarf. • Outer layers escape in a “pl ...
dtu7ech13 - Fort Thomas Independent Schools
... dwarf in a binary star system. What are the origins of the carbon, silicon, oxygen, iron, uranium, and other heavy elements on Earth? These elements are created during stellar evolution, by supernovae, and by colliding neutron stars. What are cosmic rays? Cosmic rays are high-speed particles (mostly ...
... dwarf in a binary star system. What are the origins of the carbon, silicon, oxygen, iron, uranium, and other heavy elements on Earth? These elements are created during stellar evolution, by supernovae, and by colliding neutron stars. What are cosmic rays? Cosmic rays are high-speed particles (mostly ...
Outline_CH16_Klein
... v) Signal Shape (Multiplicity): number of neighboring protons (3 bonds or less away) whose environment is different. (Section 16.7) (1) Source of coupling and the coupling constant J (2) Multiplicity rule #1 = n+1 where n = number of neighbors (3) Multiplicity rule #2 = (n+1)(m+1) (p758) where n= nu ...
... v) Signal Shape (Multiplicity): number of neighboring protons (3 bonds or less away) whose environment is different. (Section 16.7) (1) Source of coupling and the coupling constant J (2) Multiplicity rule #1 = n+1 where n = number of neighbors (3) Multiplicity rule #2 = (n+1)(m+1) (p758) where n= nu ...
Lecture 1
... 1. Equation of state (EOS) determines the pressure of the matter, P. 2. The neutron star matter is so dense that P is almost independent of the temperature T and is determined by the mass density and the composition of the matter; one usually writes P P( ). 3. The mass density is defined as ...
... 1. Equation of state (EOS) determines the pressure of the matter, P. 2. The neutron star matter is so dense that P is almost independent of the temperature T and is determined by the mass density and the composition of the matter; one usually writes P P( ). 3. The mass density is defined as ...
How to watch the Perseid meteor shower
... up of dust, gases and billions of stars. The International Space Station (ISS) – if you live in or are close to the UK you will be in for a treat during the Perseid meteor shower in 2013 as the International Space Station is visible over UK skies. This orbital laboratory is the size of a football pi ...
... up of dust, gases and billions of stars. The International Space Station (ISS) – if you live in or are close to the UK you will be in for a treat during the Perseid meteor shower in 2013 as the International Space Station is visible over UK skies. This orbital laboratory is the size of a football pi ...
earth & space science
... Classifying Stars Main sequence is the location on the H-R diagram where most stars lie; it has a diagonal pattern from the lower right to the upper left. One way scientists classify stars is by plotting the surface temperatures of stars against their ...
... Classifying Stars Main sequence is the location on the H-R diagram where most stars lie; it has a diagonal pattern from the lower right to the upper left. One way scientists classify stars is by plotting the surface temperatures of stars against their ...
January 2006
... Stage 13: White Dwarf • Core radiates only by stored heat, not by nuclear reactions • core continues to cool and contract • Size ~ Earth • Density: a million times that of Earth – 1 cubic cm has 1000 kg of mass! ...
... Stage 13: White Dwarf • Core radiates only by stored heat, not by nuclear reactions • core continues to cool and contract • Size ~ Earth • Density: a million times that of Earth – 1 cubic cm has 1000 kg of mass! ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.