Stellar Clusters and Star Formation:
... In simple terms, star formation proceeds in the manner previously discussed – namely a ball of gas collapsed under its own self-gravity until it’s stabilized by sufficient internal pressure. At that point it is a hydrogen fusing main sequence star. However, over the last 25 years we have learned and ...
... In simple terms, star formation proceeds in the manner previously discussed – namely a ball of gas collapsed under its own self-gravity until it’s stabilized by sufficient internal pressure. At that point it is a hydrogen fusing main sequence star. However, over the last 25 years we have learned and ...
Where Did All The Elements Come From??
... third dredge-up can occur. This time mostly carbon and carbon molecules are brought to the surface. These stars are called AGB or carbon stars. They have very active solar winds and are typically surrounded by a sooty planetary nebula. Thanks to Michael Richmond for the following image ...
... third dredge-up can occur. This time mostly carbon and carbon molecules are brought to the surface. These stars are called AGB or carbon stars. They have very active solar winds and are typically surrounded by a sooty planetary nebula. Thanks to Michael Richmond for the following image ...
Slide 1
... We make various assumptions (hope intelligent) about the nature of the material, how energy is Created and Transported and use the equilibrium equation to build computer Models of stable stars. For example if we assume the star is an ideal gas you may have learned that PV=nRT conects P, V and T…we u ...
... We make various assumptions (hope intelligent) about the nature of the material, how energy is Created and Transported and use the equilibrium equation to build computer Models of stable stars. For example if we assume the star is an ideal gas you may have learned that PV=nRT conects P, V and T…we u ...
Quantum Theory
... This is thus a very tiny wavelength and is completely undetectable. p “LINE” SPECTRUM OF H, and THE BOHR ATOM Recall emission spectroscopy (REF Fig. 9.9) Excite the gas by high temperature or electrical discharge from the ground state to an excited state; measure EM radiation (emitted as the gas dee ...
... This is thus a very tiny wavelength and is completely undetectable. p “LINE” SPECTRUM OF H, and THE BOHR ATOM Recall emission spectroscopy (REF Fig. 9.9) Excite the gas by high temperature or electrical discharge from the ground state to an excited state; measure EM radiation (emitted as the gas dee ...
Slide - Journal of Vision
... cosine of the angle between the rays of light from the punctate light source and the surface normal, n. A uniform diffuse light source contributes with a constant amount to the total intensity on the surface. Light absorbed by a Lambertian surface is reemitted uniformly in all directions; the intens ...
... cosine of the angle between the rays of light from the punctate light source and the surface normal, n. A uniform diffuse light source contributes with a constant amount to the total intensity on the surface. Light absorbed by a Lambertian surface is reemitted uniformly in all directions; the intens ...
Using exoplanet systems with highly elliptical orbits to search for star
... their host star by studying a sample of planetary systems known to contain massive planets on short period, highly elliptical orbits. While recent studies in the optical, UV, and X-Ray have shown enhanced chromospheric activity for stars hosting exoplanets with orbital semi-major axes less than 0.1 ...
... their host star by studying a sample of planetary systems known to contain massive planets on short period, highly elliptical orbits. While recent studies in the optical, UV, and X-Ray have shown enhanced chromospheric activity for stars hosting exoplanets with orbital semi-major axes less than 0.1 ...
Owsley Brown II Portable Planetarium 9
... ● The Big Bang theory is supported by observations of distant galaxies receding from our own, of the measured composition of stars and nonstellar gases, and of the maps of spectra of the primordial radiation (cosmic microwave background) that still fills the universe. (HSESS1-2) ● Other than the hyd ...
... ● The Big Bang theory is supported by observations of distant galaxies receding from our own, of the measured composition of stars and nonstellar gases, and of the maps of spectra of the primordial radiation (cosmic microwave background) that still fills the universe. (HSESS1-2) ● Other than the hyd ...
Science Centre Talk
... 25 neutrinos = all extragalactic neutrino astronomy...confirms core-collapse model (and limits neutrino mass) ...
... 25 neutrinos = all extragalactic neutrino astronomy...confirms core-collapse model (and limits neutrino mass) ...
Earth - jennydebellis
... We live in the Milky Way Galaxy ◦ Early astronomers looked into sky – they observed a dim band of light across sky, so they called it the Milky Way for its faint white color ◦ About 100,000 light years wide ◦ Milky Way is a spiral galaxy - our solar system is in 1 arm ...
... We live in the Milky Way Galaxy ◦ Early astronomers looked into sky – they observed a dim band of light across sky, so they called it the Milky Way for its faint white color ◦ About 100,000 light years wide ◦ Milky Way is a spiral galaxy - our solar system is in 1 arm ...
Ch.15 star formation
... slight amount of pressure when they strike matter • Very massive stars are so luminous that the collective pressure of photons drives their matter into space ...
... slight amount of pressure when they strike matter • Very massive stars are so luminous that the collective pressure of photons drives their matter into space ...
Some 250 years ago, the philosopher Immanuel Universal
... or another site in Luoyang. The atlas shows 1,339 stars arranged in 257 groups, or asterisms, two of which resemble the constellations of the Big Dipper and Orion. It includes faint stars that are difficult to see with the naked eye, and several in the Southern Hemisphere. The styles of the dots dif ...
... or another site in Luoyang. The atlas shows 1,339 stars arranged in 257 groups, or asterisms, two of which resemble the constellations of the Big Dipper and Orion. It includes faint stars that are difficult to see with the naked eye, and several in the Southern Hemisphere. The styles of the dots dif ...
Constellation Notes
... A star’s color is critical in identifying the star, because it tells us the star’s surface temperature in the black body radiation scale. The sun has a surface temperature of 5,500 K, typical for a yellow star. Red stars are cooler than the sun, with a surface temperature of 3,500 K for a bright red ...
... A star’s color is critical in identifying the star, because it tells us the star’s surface temperature in the black body radiation scale. The sun has a surface temperature of 5,500 K, typical for a yellow star. Red stars are cooler than the sun, with a surface temperature of 3,500 K for a bright red ...
Solar System
... • The light-gathering area of a telescope’s objective lens or mirror is its aperture • If diffraction occurs at the aperture, the image will be blurred. • Optical telescopes have apertures much bigger than the wavelength of light to reduce diffraction and form sharp images. • Radio waves have long w ...
... • The light-gathering area of a telescope’s objective lens or mirror is its aperture • If diffraction occurs at the aperture, the image will be blurred. • Optical telescopes have apertures much bigger than the wavelength of light to reduce diffraction and form sharp images. • Radio waves have long w ...
Ch. 20 Classifying Objects in the Solar System
... 1. The Sun is considered a star because it is the only object in our solar system hot enough to undergo the process of ______________ _____________ where two hydrogen molecules are joined to form ________________. 2. Objects which orbit the Sun, are nearly round and have sufficient gravity to “clear ...
... 1. The Sun is considered a star because it is the only object in our solar system hot enough to undergo the process of ______________ _____________ where two hydrogen molecules are joined to form ________________. 2. Objects which orbit the Sun, are nearly round and have sufficient gravity to “clear ...
pdf of paper
... solar masses, is no longer there. Together the star and the supernova give dramatic evidence that at least one massive star ended its life in a violent way. Neutrinos emitted from the innermost shock wave of the explosion were detected in Ohio and in Japan, hours before the star began to brighten. F ...
... solar masses, is no longer there. Together the star and the supernova give dramatic evidence that at least one massive star ended its life in a violent way. Neutrinos emitted from the innermost shock wave of the explosion were detected in Ohio and in Japan, hours before the star began to brighten. F ...
Solar System CFA
... Question #3 • The formation of the solar system from a huge cloud of dust and gases is called the _______. ...
... Question #3 • The formation of the solar system from a huge cloud of dust and gases is called the _______. ...
Distance measurement in astronomy
... Of course the period of a variable star in distant galaxies is really difficult to measure and so yet another method was needed to push back the limits of cosmic distance measurement. ...
... Of course the period of a variable star in distant galaxies is really difficult to measure and so yet another method was needed to push back the limits of cosmic distance measurement. ...
Document
... Type 1a Supernova – Another Standard Candle • The light output from a Type 1a supernova follows a very predictable curve. – Initial brightness increase followed by a slowly decaying “tail” ...
... Type 1a Supernova – Another Standard Candle • The light output from a Type 1a supernova follows a very predictable curve. – Initial brightness increase followed by a slowly decaying “tail” ...
PREVIEW-Reading Quiz 06 - Chapter 12
... Refer back to the sections about light in Chapter 10 of our textbook. Planetary nebulae provide excellent examples of the range colors that can be produced by processes occurring in atoms. (The colors displayed for the images of the planetary nebulae in the text may, in fact, be the actual colors.) ...
... Refer back to the sections about light in Chapter 10 of our textbook. Planetary nebulae provide excellent examples of the range colors that can be produced by processes occurring in atoms. (The colors displayed for the images of the planetary nebulae in the text may, in fact, be the actual colors.) ...
12.4 Evolution of Stars More Massive than the Sun
... It can be seen from this H-R diagram that stars more massive than the Sun follow very different paths when leaving the Main Sequence: ...
... It can be seen from this H-R diagram that stars more massive than the Sun follow very different paths when leaving the Main Sequence: ...
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.