AY 20 Fall 2010
... stars can determine their properties Treat stars as ideal emitters that absorb all incident radiation and re-radiate over a range of wavelengths i.e. as Black Bodies that reflect no radiation From radiant flux in the visible band can measure Stellar Motions Distances Brightness “Temperature” ...
... stars can determine their properties Treat stars as ideal emitters that absorb all incident radiation and re-radiate over a range of wavelengths i.e. as Black Bodies that reflect no radiation From radiant flux in the visible band can measure Stellar Motions Distances Brightness “Temperature” ...
Stars - TeacherWeb
... Main Sequence Stars • all stars fuse hydrogen into helium • 90% of all stars, including our Sun, are main sequence stars • range from high luminosity (brightness) and high surface temperature to low luminosity and low surface temperature ...
... Main Sequence Stars • all stars fuse hydrogen into helium • 90% of all stars, including our Sun, are main sequence stars • range from high luminosity (brightness) and high surface temperature to low luminosity and low surface temperature ...
Mass Spectrum – Interpretation
... The mass spectrum of Br2 – if we just look at the molecular ion – i.e. the Br2 region ...
... The mass spectrum of Br2 – if we just look at the molecular ion – i.e. the Br2 region ...
Star Types
... Which is the faintest? the sun, an O star, a white dwarf, or a red giant? Which of these star is the hottest? What are Sun-like stars (0.4 Msun < M < 8 Msun) in common? What about red dwarfs (0.08 Msun < M < 0.4 Msun) ? Where do stars spend most of their time? ...
... Which is the faintest? the sun, an O star, a white dwarf, or a red giant? Which of these star is the hottest? What are Sun-like stars (0.4 Msun < M < 8 Msun) in common? What about red dwarfs (0.08 Msun < M < 0.4 Msun) ? Where do stars spend most of their time? ...
Yes - Wichita State University
... •Measure the oxygen gradient in the ISM of the Milky Way disk •Employ planetary nebulae as abundance probes •Perform detailed statistical treatment of data ...
... •Measure the oxygen gradient in the ISM of the Milky Way disk •Employ planetary nebulae as abundance probes •Perform detailed statistical treatment of data ...
Document
... 1919 - Confirmation of Einstein’s Theory of Gravity 1929 - Hubble’s discovery of Expanding Universe 1955 - Debate between Big Bang and Steady State 1965 - Discovery of the Cosmic Microwave ...
... 1919 - Confirmation of Einstein’s Theory of Gravity 1929 - Hubble’s discovery of Expanding Universe 1955 - Debate between Big Bang and Steady State 1965 - Discovery of the Cosmic Microwave ...
![3 — Blackbody Radiation [Revision : 1.5]](http://s1.studyres.com/store/data/005908504_1-5005bdffc2e5f9c6e0687c31f49c7e9d-300x300.png)
3 — Blackbody Radiation [Revision : 1.5]
... • Planck formula – At short wavelengths, Rayleigh-Jeans uλ blows up (ultraviolet catastrophe) – Fix is energy quantization: energy of standing wave with frequency ν constrained to be an integer multiple of hν = hc/λ – At short wavelengths, equipartition energy kT is insufficient to make up a whole q ...
... • Planck formula – At short wavelengths, Rayleigh-Jeans uλ blows up (ultraviolet catastrophe) – Fix is energy quantization: energy of standing wave with frequency ν constrained to be an integer multiple of hν = hc/λ – At short wavelengths, equipartition energy kT is insufficient to make up a whole q ...
Astronomy in the secondary school classroom
... Astronomy (astro = star, nomen = name in Greek) is the observational study of matter beyond Earth – planets in the Solar System, stars in the Milky Way Galaxy, galaxies in the Universe, and diffuse matter between these concentrations. The perspective is rooted from our viewpoint on or near Earth usi ...
... Astronomy (astro = star, nomen = name in Greek) is the observational study of matter beyond Earth – planets in the Solar System, stars in the Milky Way Galaxy, galaxies in the Universe, and diffuse matter between these concentrations. The perspective is rooted from our viewpoint on or near Earth usi ...
What are stars?
... All stars are formed and develop the same way, up until what point? ___________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Into how many gr ...
... All stars are formed and develop the same way, up until what point? ___________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ Into how many gr ...
here
... between degenerate electrons. This is what happens in the burnt-out cores of red giants. As soon as the nuclear fuel is exhausted, such that compression doesn’t trigger any new nuclear reactions, the gas collapses to form a degenerate core mostly consisting of carbon, oxygen and nitrogen. Later, aft ...
... between degenerate electrons. This is what happens in the burnt-out cores of red giants. As soon as the nuclear fuel is exhausted, such that compression doesn’t trigger any new nuclear reactions, the gas collapses to form a degenerate core mostly consisting of carbon, oxygen and nitrogen. Later, aft ...
The Galaxy Luminosity Function
... → Few galaxies have L >> L* because they are rare → Few galaxies have L << L* because they are too faint to see 2) M31 (MB = -20.3) is a 0.5L* galaxy, & the combined Local Group ~ 1 L*. 3) cD galaxies, which are 5 – 10 L*, do not fit into the Schechter function scheme. ...
... → Few galaxies have L >> L* because they are rare → Few galaxies have L << L* because they are too faint to see 2) M31 (MB = -20.3) is a 0.5L* galaxy, & the combined Local Group ~ 1 L*. 3) cD galaxies, which are 5 – 10 L*, do not fit into the Schechter function scheme. ...
Word
... same way we talk about the gravitational potential energy of a person increasing when they climb up stairs, but in fact it is the system, the person and the earth, which gains potential energy. Without the Earth there, it wouldn’t mean much to talk about the person’s gravitational potential energy, ...
... same way we talk about the gravitational potential energy of a person increasing when they climb up stairs, but in fact it is the system, the person and the earth, which gains potential energy. Without the Earth there, it wouldn’t mean much to talk about the person’s gravitational potential energy, ...
Chemistry Objectives — Arrangements of Electrons in Atoms 1
... 1. Define and explain each of the following WRT light and color. Use equations!: a) electromagnetic radiation b) wavelength c) frequency d) velocity (c = speed of light) e) continuous spectrum f) electromagnetic spectrum g) visible light h) energy level (of an electron) ...
... 1. Define and explain each of the following WRT light and color. Use equations!: a) electromagnetic radiation b) wavelength c) frequency d) velocity (c = speed of light) e) continuous spectrum f) electromagnetic spectrum g) visible light h) energy level (of an electron) ...
EMR_spectra_in_nanoparticles
... Either Lorentzian or Gaussian may be tested, assuming the line-width dependent on m. Spreading and fluctuations of D and n are typical for magnetic nanoparticles. This results in the line broadening which increases with m, see Eqs.3 and 4. The narrow spectral component originates from transition ...
... Either Lorentzian or Gaussian may be tested, assuming the line-width dependent on m. Spreading and fluctuations of D and n are typical for magnetic nanoparticles. This results in the line broadening which increases with m, see Eqs.3 and 4. The narrow spectral component originates from transition ...
RADIUS (6371 KM) - Department of Earth and Planetary Sciences
... 10-20 times better than ground-based telescopes Resolve astronomical objects with angular size of 0.05 arc seconds (=seeing pair of fireflies in Tokyo from Maryland) ...
... 10-20 times better than ground-based telescopes Resolve astronomical objects with angular size of 0.05 arc seconds (=seeing pair of fireflies in Tokyo from Maryland) ...
Galaxies - Stockton University
... In the modern picture of our Galaxy, the Sun is 8 kpc from the center of the Galaxy. The Sun resides in a flattened circular disk which is of order 200 pc thick and extends out to about 15 Kpc. Thus the disk is of order 100,000 light-years across. At the center of the disk is the spheroid or bulge. ...
... In the modern picture of our Galaxy, the Sun is 8 kpc from the center of the Galaxy. The Sun resides in a flattened circular disk which is of order 200 pc thick and extends out to about 15 Kpc. Thus the disk is of order 100,000 light-years across. At the center of the disk is the spheroid or bulge. ...
The Electronic Structures of Atoms Electromagnetic Radiation The
... Energy is absorbed when electrons jump to higher orbits. n = 2 to n = 4 for example Energy is emitted when electrons fall to lower orbits. n = 4 to n = 1 for example ...
... Energy is absorbed when electrons jump to higher orbits. n = 2 to n = 4 for example Energy is emitted when electrons fall to lower orbits. n = 4 to n = 1 for example ...
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.