A NEW METHOD FOR MEASURING EXTRAGALACTIC DISTANCES
... torus that is closer to the central engine. This effect makes the observed Δt shorter than would be the case if the same AGN was observed at a smaller redshift. We formulate the correction to our K-band observations empirically, by using the mean delay of H-band to K-band, which is about 0.3 times t ...
... torus that is closer to the central engine. This effect makes the observed Δt shorter than would be the case if the same AGN was observed at a smaller redshift. We formulate the correction to our K-band observations empirically, by using the mean delay of H-band to K-band, which is about 0.3 times t ...
Question paper - Edexcel
... 12 A student is constructing a spreadsheet to calculate the radius R of some stars. To obtain the radius, the surface temperature T of the star must first be calculated. She is given values for the stars’ luminosities L and the wavelengths λmax at which peak energy emission occurs. Part of the spr ...
... 12 A student is constructing a spreadsheet to calculate the radius R of some stars. To obtain the radius, the surface temperature T of the star must first be calculated. She is given values for the stars’ luminosities L and the wavelengths λmax at which peak energy emission occurs. Part of the spr ...
Astronomy
... Star Guide to explain) Demonstrate the change in position of the Big Dipper in the sky (using a skymap) Explain the assignment that each Scout will need to draw the sketches on a clear night this week and bring them to the Friday session (d) Explain what we see when we look at the Milky Way Spac ...
... Star Guide to explain) Demonstrate the change in position of the Big Dipper in the sky (using a skymap) Explain the assignment that each Scout will need to draw the sketches on a clear night this week and bring them to the Friday session (d) Explain what we see when we look at the Milky Way Spac ...
fourier transform infra-red (ftir) spectroscopy
... It is clear that if the interferogram f(x), is determined experimentally, the ...
... It is clear that if the interferogram f(x), is determined experimentally, the ...
ESR Theory - Personal WWW Pages
... As seen previously, the electron spin energy levels are split by the magnetic field. In addition there is further splitting due to the four possible values of m I. Since the coupling is to a nucleus of spin I = 3/2, there should be 2n(I + 1) lines (ie 2.1.(3/2 +1) = 4 lines). The four transitions ar ...
... As seen previously, the electron spin energy levels are split by the magnetic field. In addition there is further splitting due to the four possible values of m I. Since the coupling is to a nucleus of spin I = 3/2, there should be 2n(I + 1) lines (ie 2.1.(3/2 +1) = 4 lines). The four transitions ar ...
Constants and Equations
... 21) Assume a Type Ia Supernova is 163 Mly away from Earth, please calculate the brightest apparent magnitude of this supernova. 22) Please calculate the wavelength of Hα spectral line in nm. ...
... 21) Assume a Type Ia Supernova is 163 Mly away from Earth, please calculate the brightest apparent magnitude of this supernova. 22) Please calculate the wavelength of Hα spectral line in nm. ...
Draft A101 Slide Set #1 - Astronomical Society of the Pacific
... • When massive stars end their lives in titanic explosions called supernovae, the chemical elements forged in the stars’ interiors-and created in the heat and pressure of the explosion--are released into space as a debris cloud of hot gas and dust. • Scientists had evidence of such dust formation, b ...
... • When massive stars end their lives in titanic explosions called supernovae, the chemical elements forged in the stars’ interiors-and created in the heat and pressure of the explosion--are released into space as a debris cloud of hot gas and dust. • Scientists had evidence of such dust formation, b ...
the fixed stars - The Witches` Almanac
... influence during 2014 – 15. Uranus will be in orb of a conjunction with this fixed star most of the year. The aspect will be strongest when Uranus is at 14 degrees of Aries during April 30 – May 19, 2014; September 26 – October 20, 2014; and again February 20 – March 11, 2015. The total lunar eclips ...
... influence during 2014 – 15. Uranus will be in orb of a conjunction with this fixed star most of the year. The aspect will be strongest when Uranus is at 14 degrees of Aries during April 30 – May 19, 2014; September 26 – October 20, 2014; and again February 20 – March 11, 2015. The total lunar eclips ...
Neutron Stars
... The energy source for the repeated gamma-ray bursts (SGRs) from some neutron stars is what? A: fusion of hydrogen on the surface B: energy released by material accreting onto the surface. C: the result of reconfigurations of the strong magnetic fields ...
... The energy source for the repeated gamma-ray bursts (SGRs) from some neutron stars is what? A: fusion of hydrogen on the surface B: energy released by material accreting onto the surface. C: the result of reconfigurations of the strong magnetic fields ...
PPT
... Waves not only carry energy but also momentum. The effect is very small (we don’t ordinarily feel pressure from light). If light is completely absorbed during an interval t, the momentum transferred is given by p u and twice as much if reflected. c A ...
... Waves not only carry energy but also momentum. The effect is very small (we don’t ordinarily feel pressure from light). If light is completely absorbed during an interval t, the momentum transferred is given by p u and twice as much if reflected. c A ...
Clusters of Galaxies
... 1. Rotation Curves in Galaxies: The rotation velocities of galaxies at large radii are constant. This is not what one would expect if the luminous matter (stars and gas) were all the matter. One can work out what the Dark Matter “Halo” looks like from this. 2. Velocities in Clusters of Galaxies: A ...
... 1. Rotation Curves in Galaxies: The rotation velocities of galaxies at large radii are constant. This is not what one would expect if the luminous matter (stars and gas) were all the matter. One can work out what the Dark Matter “Halo” looks like from this. 2. Velocities in Clusters of Galaxies: A ...
Galaxies - gilbertmath.com
... with more dust than others tend to produce more __________. This is because stars form from ________ and __________ present in nebulae. Some ancient galaxies have almost no dust because it has all been used up in making __________. It is thought that each galaxy contains, at its centre, a ____ ...
... with more dust than others tend to produce more __________. This is because stars form from ________ and __________ present in nebulae. Some ancient galaxies have almost no dust because it has all been used up in making __________. It is thought that each galaxy contains, at its centre, a ____ ...
PART II: Life of a Star
... The Milky Way Metal-poor Stars • Early finding: Stars in the Milky Way don't all have the same composition → complex history of Galaxy. This revelation spawned numerous branches of Astrophysics. • Metal-poor stars in particular can provide constraints on: • Big Bang Nucleosynthesis (eg. 7Li in Halo ...
... The Milky Way Metal-poor Stars • Early finding: Stars in the Milky Way don't all have the same composition → complex history of Galaxy. This revelation spawned numerous branches of Astrophysics. • Metal-poor stars in particular can provide constraints on: • Big Bang Nucleosynthesis (eg. 7Li in Halo ...
astronomy - Scioly.org
... - More common naked-eye stars with higher tendency to have massive planets - 0.625% of stars in solar neighborhood belong to class A. - Strong hydrogen lines with strengthening Ca II lines - Main-sequence star, spectral type F, luminosity class V - Technically a “dwarf star,” so may be referred to a ...
... - More common naked-eye stars with higher tendency to have massive planets - 0.625% of stars in solar neighborhood belong to class A. - Strong hydrogen lines with strengthening Ca II lines - Main-sequence star, spectral type F, luminosity class V - Technically a “dwarf star,” so may be referred to a ...
14.5 Galactic Spiral Arms
... 14.6 The Mass of the Milky Way Galaxy Once all the galaxy is within an orbit, the velocity should diminish with distance, as the dashed curve shows. It doesn’t; more than twice the mass of the galaxy would have to be outside the visible part to reproduce the ...
... 14.6 The Mass of the Milky Way Galaxy Once all the galaxy is within an orbit, the velocity should diminish with distance, as the dashed curve shows. It doesn’t; more than twice the mass of the galaxy would have to be outside the visible part to reproduce the ...
The Propagation of Light through Dark Matter
... gamma ray burst has a measurable time lag between high and low frequencies, we can measure the dispersion of the cosmos. If this dispersion is due to dark matter, it is possible to constrain a particular model of dark particles; in this case, the characteristics of our dark atom are constrained. We ...
... gamma ray burst has a measurable time lag between high and low frequencies, we can measure the dispersion of the cosmos. If this dispersion is due to dark matter, it is possible to constrain a particular model of dark particles; in this case, the characteristics of our dark atom are constrained. We ...
CBO_Paper2_UnderstandingtheStoryOfTheUniverse
... from a cluster arises. According to the Oxford English Dictionary, a system of millions of stars allows for the label “galaxy”. Furthermore, Forbes and Kroupa state that galaxies contain dark matter, have a radius longer than 300 light-years, and lack star collisions due to their stability. Galaxies ...
... from a cluster arises. According to the Oxford English Dictionary, a system of millions of stars allows for the label “galaxy”. Furthermore, Forbes and Kroupa state that galaxies contain dark matter, have a radius longer than 300 light-years, and lack star collisions due to their stability. Galaxies ...
1. An object of mass 3 kg is placed on a smooth plane inclined at 30º
... connected to earth, 200 electrons are ejected form the surface per second. If a light beam of intensity 2 I and frequency 2 f is used, the ...
... connected to earth, 200 electrons are ejected form the surface per second. If a light beam of intensity 2 I and frequency 2 f is used, the ...
Dynamics
... galaxies have spiralled very close together, the black holes can have a significant impact on the distribution of stars in their vicinity. Indeed, the merger leads to the formation of a binary black hole that initially moves through a centrally concentrated sea of background stars. One by one the st ...
... galaxies have spiralled very close together, the black holes can have a significant impact on the distribution of stars in their vicinity. Indeed, the merger leads to the formation of a binary black hole that initially moves through a centrally concentrated sea of background stars. One by one the st ...
Ay123 Fall 2011 STELLAR STRUCTURE AND EVOLUTION Problem Set 2
... (3) Stein 2051, M = 0.50 M⊙ or 0.72 M⊙ , R = 0.0115 R⊙ , and try to infer their compositions. e. The results you have derived above should show that as M → 0, R → ∞. Clearly, at some point this result must break down (think about where Jupiter would fall on this plot !). This is because when the den ...
... (3) Stein 2051, M = 0.50 M⊙ or 0.72 M⊙ , R = 0.0115 R⊙ , and try to infer their compositions. e. The results you have derived above should show that as M → 0, R → ∞. Clearly, at some point this result must break down (think about where Jupiter would fall on this plot !). This is because when the den ...
Stellar Parallax Problems
... 6. A. The European Space Agency sent an exact copy of the Gaia mission to orbit Saturn and take parallax measurements, what would be the largest distance to a star that the Gaia spacecraft could measure from that orbit? ...
... 6. A. The European Space Agency sent an exact copy of the Gaia mission to orbit Saturn and take parallax measurements, what would be the largest distance to a star that the Gaia spacecraft could measure from that orbit? ...
Earth Science Exam Review 1st Semester
... Travis decided after all of his research, that his hypothesis about predicting volcano eruptions, was false. What part of the scientific method has the ...
... Travis decided after all of his research, that his hypothesis about predicting volcano eruptions, was false. What part of the scientific method has the ...
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.