Supporting material for Lecture 2
... object (or reflected light for non-luminous objects like asteroids); it is the object's apparent magnitude as seen from a certain location. For stars it is 10 parsecs (32.6 light years). ...
... object (or reflected light for non-luminous objects like asteroids); it is the object's apparent magnitude as seen from a certain location. For stars it is 10 parsecs (32.6 light years). ...
Chap5-uLensing-c - Groupe d`Astronomie et Astrophysique
... Presence of matter distorts space-time. Light path is deflected as a result. Gravity acts a lens. Light from background source can be amplified by a foreground (lens) source. 34 planets detected by this technique so far (as of February 2015) ...
... Presence of matter distorts space-time. Light path is deflected as a result. Gravity acts a lens. Light from background source can be amplified by a foreground (lens) source. 34 planets detected by this technique so far (as of February 2015) ...
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... richer, denser clusters earlier. S0’s are only formed after cluster virialization ...
... richer, denser clusters earlier. S0’s are only formed after cluster virialization ...
Iowa - LIGO
... Newton’s theory Mercury's elliptical path around the Sun shifts slightly with each orbit such that its closest point to the Sun (or "perihelion") shifts forward with each pass. ...
... Newton’s theory Mercury's elliptical path around the Sun shifts slightly with each orbit such that its closest point to the Sun (or "perihelion") shifts forward with each pass. ...
(PDF, Unknown) - Natural Philosophy Alliance
... Another consequence of this electrodynamic theory of gravitation is that the force of gravity is decreasing over time. The emission of the radiation above causes a decay of the force of gravity due to a decrease in the value of the mass. The rate of decay depends on an atom's position in an astronom ...
... Another consequence of this electrodynamic theory of gravitation is that the force of gravity is decreasing over time. The emission of the radiation above causes a decay of the force of gravity due to a decrease in the value of the mass. The rate of decay depends on an atom's position in an astronom ...
the galaxy-halo connection from abundance matching: simplicity
... the mass of a dark matter halo is the primary determinant of its properties. detailed tests of the model can test both LCDM and galaxy formation physics Results to date: matching stellar mass/or luminosity to the maximum mass/vmax its halo ever had (current mass(vmax) for central galaxies; mass at a ...
... the mass of a dark matter halo is the primary determinant of its properties. detailed tests of the model can test both LCDM and galaxy formation physics Results to date: matching stellar mass/or luminosity to the maximum mass/vmax its halo ever had (current mass(vmax) for central galaxies; mass at a ...
PH607lec12-10agn2
... strong radio, highly variable, mainly ellipticals OVV quasars: powerful BL Lacs but with emission lines Radio Galaxies BLRG: Broad/narrow lines, strong radio emission, FR II, weak polarisation, elliptical variable, variable Radio Galaxies NLRG: narrow lines only, strong radio, FR I/II, no polarisati ...
... strong radio, highly variable, mainly ellipticals OVV quasars: powerful BL Lacs but with emission lines Radio Galaxies BLRG: Broad/narrow lines, strong radio emission, FR II, weak polarisation, elliptical variable, variable Radio Galaxies NLRG: narrow lines only, strong radio, FR I/II, no polarisati ...
SOUTHERN CONSTELLATION, SEXTANS Sextans constellation
... and is approximately 287 light years distant from Earth. It is the brightest star in Sextans. It is 122 times more luminous than the Sun and has a mass three times solar. The star is believed to be about 300 million years old. It is informally considered to be an “equator star,” currently located le ...
... and is approximately 287 light years distant from Earth. It is the brightest star in Sextans. It is 122 times more luminous than the Sun and has a mass three times solar. The star is believed to be about 300 million years old. It is informally considered to be an “equator star,” currently located le ...
EMR notes
... space-no atmosphere) According to his theory, a changing magnetic field produces a changing electric field, which produces a changing magnetic field and so on. It’s an unending sequence of events. Since magnetic field around a current-carrying conductor depends on the current (rate of flow of charge ...
... space-no atmosphere) According to his theory, a changing magnetic field produces a changing electric field, which produces a changing magnetic field and so on. It’s an unending sequence of events. Since magnetic field around a current-carrying conductor depends on the current (rate of flow of charge ...
LIGHT - Taft High School
... Optical Axis – Base line through the center of a mirror or lens Focal Point – Point where reflected or refracted rays meet & image is formed Focal Length – Distance between center of mirror/lens and focal point © 2000 Microsoft Clip Gallery ...
... Optical Axis – Base line through the center of a mirror or lens Focal Point – Point where reflected or refracted rays meet & image is formed Focal Length – Distance between center of mirror/lens and focal point © 2000 Microsoft Clip Gallery ...
Word
... Expansion of the Universe Evidence for the expansion of the Universe from a hot dense initial state comes from: 1. observations of the cosmic microwave background radiation, showing that the Universe has cooled as it expanded, 2. observations of the speed of recession of galaxies, from red-shifts of ...
... Expansion of the Universe Evidence for the expansion of the Universe from a hot dense initial state comes from: 1. observations of the cosmic microwave background radiation, showing that the Universe has cooled as it expanded, 2. observations of the speed of recession of galaxies, from red-shifts of ...
Cepheid variable stars
... in temperature and brightness of Cepheid variables were caused by radial pulsation. He argued that binary theories of stellar pulsation should be discarded and that astronomers should seek a mechanism by which single stars could rhythmically ‘breathe’ in and out. Radial pulsations had been proposed ...
... in temperature and brightness of Cepheid variables were caused by radial pulsation. He argued that binary theories of stellar pulsation should be discarded and that astronomers should seek a mechanism by which single stars could rhythmically ‘breathe’ in and out. Radial pulsations had been proposed ...
GOFER Module: Google Sky Please open Google Earth, then
... What are the Messier numbers for both? A. 4 Sgr & 11 Sgr B. M6 & M21 C. M8 & M20 D. NGC 6449 & NGC 6553 8. Observe the shape of the constellation Sagittarius. This distinct appearance causes stargazers to liken Sagittarius to which of the following? A. a cradle B. a circular snake C. a Persian emper ...
... What are the Messier numbers for both? A. 4 Sgr & 11 Sgr B. M6 & M21 C. M8 & M20 D. NGC 6449 & NGC 6553 8. Observe the shape of the constellation Sagittarius. This distinct appearance causes stargazers to liken Sagittarius to which of the following? A. a cradle B. a circular snake C. a Persian emper ...
T Tauri Variable Type Star
... Found in galactic clouds (like Taurus Auriga dark cloud) because they formed more recently and haven’t had enough time to move far from where they formed. Spectra contain strong Balmer lines as well as forbidden lines … and … . The low density of T Tauri stars allows these lines to appear. ...
... Found in galactic clouds (like Taurus Auriga dark cloud) because they formed more recently and haven’t had enough time to move far from where they formed. Spectra contain strong Balmer lines as well as forbidden lines … and … . The low density of T Tauri stars allows these lines to appear. ...
