Teresa Ashcraft
... Stellar mass related to timescale of evolution -relate to extinction and star formation rate and IRX Relationship between metallicity and IRX Mass-metallicity relation-low metallicity=low extinction=low stellar mass=low star formation rate ...
... Stellar mass related to timescale of evolution -relate to extinction and star formation rate and IRX Relationship between metallicity and IRX Mass-metallicity relation-low metallicity=low extinction=low stellar mass=low star formation rate ...
Stars: from Adolescence to Old Age
... shell burning: hydrogen shell surrounding the core ignites star expands and becomes a subgiant, then a red giant Stage 6: Helium Fusion helium fusion begins in the core star passes through a yellow giant phase equilibrates as a red giant or supergiant Stage 7: Stellar Nucleosynthesis – fusion of hea ...
... shell burning: hydrogen shell surrounding the core ignites star expands and becomes a subgiant, then a red giant Stage 6: Helium Fusion helium fusion begins in the core star passes through a yellow giant phase equilibrates as a red giant or supergiant Stage 7: Stellar Nucleosynthesis – fusion of hea ...
preliminary version - University of Exeter
... an obvious test of disc locking is to compare the period distribution of CTTs against WTTs. We have overcome this bias by using a more intensive monitoring strategy than previous studies. For example, in IC 348 we took data on 15 consecutive nights, and repeated the observations many times within a ...
... an obvious test of disc locking is to compare the period distribution of CTTs against WTTs. We have overcome this bias by using a more intensive monitoring strategy than previous studies. For example, in IC 348 we took data on 15 consecutive nights, and repeated the observations many times within a ...
Cosmology * The Origin and Evolution of the Universe
... • Universe was hot & opaque until ~300,000 years after Big Bang, • Then cool enough for protons and electrons to combine to form hydrogen and this neutral gas was transparent; only able to absorb certain narrow discrete wavelength, most pass through it unabsorbed.. (just like air around you behaves ...
... • Universe was hot & opaque until ~300,000 years after Big Bang, • Then cool enough for protons and electrons to combine to form hydrogen and this neutral gas was transparent; only able to absorb certain narrow discrete wavelength, most pass through it unabsorbed.. (just like air around you behaves ...
Word
... Now that you have used Hubble’s constant on your own, describe the significance of Hubble’s constant in your own words. Consider these questions in your explanation. 1. Does the Universe have edges or a center? 2. What does this mean in terms of expansion? 3. Is expansion technically relative to the ...
... Now that you have used Hubble’s constant on your own, describe the significance of Hubble’s constant in your own words. Consider these questions in your explanation. 1. Does the Universe have edges or a center? 2. What does this mean in terms of expansion? 3. Is expansion technically relative to the ...
Universal Perspectives
... million (107) stars up to giants with one trillion (1012) stars. Andromeda shown to the right. ...
... million (107) stars up to giants with one trillion (1012) stars. Andromeda shown to the right. ...
Contrast the old definition of constellation with the
... If all stars are circumpolar if you lived at the north pole, and all stars rise and set if you lived on the equator, what can you state about the motion of stars if you lived in between the north pole and the equator? ...
... If all stars are circumpolar if you lived at the north pole, and all stars rise and set if you lived on the equator, what can you state about the motion of stars if you lived in between the north pole and the equator? ...
HAVE YOU EVER GONE - Apologetics Press
... there are so few molecules in space, we call it a vacuum. Space is not empty though, because it still has energy in it and because there are gases, dust, and other stuff floating around—but their molecules are very spread out. ...
... there are so few molecules in space, we call it a vacuum. Space is not empty though, because it still has energy in it and because there are gases, dust, and other stuff floating around—but their molecules are very spread out. ...
Death - Wayne State University Physics and Astronomy
... • They are now known to be caused by old, dead stars • The spectra of a nova shows blue-shifted absorption lines showing that a hot dense gas is expanding towards us at a few thousands of kilometers per second • The continuum is from the hot dense gas and the absorption lines are from the lowerdensi ...
... • They are now known to be caused by old, dead stars • The spectra of a nova shows blue-shifted absorption lines showing that a hot dense gas is expanding towards us at a few thousands of kilometers per second • The continuum is from the hot dense gas and the absorption lines are from the lowerdensi ...
ph104exp09_Physical_Optics_03
... Look at the single slit diffraction pattern by shining laser through a series of single slits of decreasing width --- 1C, 1D, 1E, and observing the pattern on the screen --- What happens to the pattern on the screen as you move from 1C to 1E? Once again draw the patterns in your notebook and write d ...
... Look at the single slit diffraction pattern by shining laser through a series of single slits of decreasing width --- 1C, 1D, 1E, and observing the pattern on the screen --- What happens to the pattern on the screen as you move from 1C to 1E? Once again draw the patterns in your notebook and write d ...
Daily Quizzes for Laser Technology
... 2. Planetariums use_________ to display designs on a screen that are synchronized with music. ...
... 2. Planetariums use_________ to display designs on a screen that are synchronized with music. ...
Conscious Light, and Signs of the Divine
... research in astrophysics, reviewed in Economist magazine dated September 4, 2010, discovered that the Alpha may not be constant after all, but changing from place to place within the universe. If these results hold up to scrutiny, they will have profound implications, for they suggest that the unive ...
... research in astrophysics, reviewed in Economist magazine dated September 4, 2010, discovered that the Alpha may not be constant after all, but changing from place to place within the universe. If these results hold up to scrutiny, they will have profound implications, for they suggest that the unive ...
Read the information on Hertzsprung
... In the Hertzsprung-Russell (HR) diagram, each star is represented by a dot. There are lots of stars out there, so there are lots of dots. The position of each dot on the diagram tells us two things about each star: its luminosity and its temperature. The vertical axis represents the star’s luminosit ...
... In the Hertzsprung-Russell (HR) diagram, each star is represented by a dot. There are lots of stars out there, so there are lots of dots. The position of each dot on the diagram tells us two things about each star: its luminosity and its temperature. The vertical axis represents the star’s luminosit ...
Model - High Energy Astrophysics Group
... electric field (E||) parallel to magnetic field line in gap, where Gamma-ray emissions (~a few GeV) via curvature Last open line process ...
... electric field (E||) parallel to magnetic field line in gap, where Gamma-ray emissions (~a few GeV) via curvature Last open line process ...
Lecture 5
... In the Sun ~10% of its volume is at the T and required for fusion Total energy available is… – Energy per reaction x (total mass available for fusion / mass in each reaction) = Energy per reaction x (0.1 x mass of Sun / mass of 4 x 11H atoms) (where mass of Sun is 2x1030kg) ...
... In the Sun ~10% of its volume is at the T and required for fusion Total energy available is… – Energy per reaction x (total mass available for fusion / mass in each reaction) = Energy per reaction x (0.1 x mass of Sun / mass of 4 x 11H atoms) (where mass of Sun is 2x1030kg) ...
lecture_5_mbu_b
... In the Sun ~10% of its volume is at the T and required for fusion Total energy available is… – Energy per reaction x (total mass available for fusion / mass in each reaction) = Energy per reaction x (0.1 x mass of Sun / mass of 4 x 11H atoms) (where mass of Sun is 2x1030kg) ...
... In the Sun ~10% of its volume is at the T and required for fusion Total energy available is… – Energy per reaction x (total mass available for fusion / mass in each reaction) = Energy per reaction x (0.1 x mass of Sun / mass of 4 x 11H atoms) (where mass of Sun is 2x1030kg) ...
Dynamical models of the nucleus of M31
... • thermodynamic equilibrium in potential ©=-GM/r yields density ...
... • thermodynamic equilibrium in potential ©=-GM/r yields density ...
The Hamburg/ESO R-process Enhanced Star survey (HERES)
... r-I: metal-poor stars with +0.3 ≤ [Eu/Fe] ≤ +1.0 and [Ba/Eu] < 0; r-II: metal-poor stars with [Eu/Fe] > +1.0 and [Ba/Eu] < 0. Note that the term “metal-poor” is not necessarily refering to the overall metal-content of the star, which might in fact not be significantly below the solar value when the ...
... r-I: metal-poor stars with +0.3 ≤ [Eu/Fe] ≤ +1.0 and [Ba/Eu] < 0; r-II: metal-poor stars with [Eu/Fe] > +1.0 and [Ba/Eu] < 0. Note that the term “metal-poor” is not necessarily refering to the overall metal-content of the star, which might in fact not be significantly below the solar value when the ...
Fig. 10-1: Transmission windows
... by a constant L • Different wavelengths get multiplexed (multi-inputs one output) or de-multiplexed (one input multi output) • For wavelength routing applications multiinput multi-output routers are available ...
... by a constant L • Different wavelengths get multiplexed (multi-inputs one output) or de-multiplexed (one input multi output) • For wavelength routing applications multiinput multi-output routers are available ...
Astro 10: Introductory Astronomy
... • The “Fast” scenario: eddys form, merge. Eddys include not just dust (which is only ~2% of total mass recall), but hydrogen and helium as well (much more mass here). The growth rate would be much faster as gravity would kick in right away for such massive objects. ...
... • The “Fast” scenario: eddys form, merge. Eddys include not just dust (which is only ~2% of total mass recall), but hydrogen and helium as well (much more mass here). The growth rate would be much faster as gravity would kick in right away for such massive objects. ...
zinc(II): Zn 2 [(n
... full-width peak, but the S(2p) spectrum showed a broad peak with a shoulder suggesting two types of sulfur atoms. The two peaks indicated by the broken lines, which were obtained by a graphical resolution, were almost equal in intensity. The peak with the lower binding energy of the two in the S(2p) ...
... full-width peak, but the S(2p) spectrum showed a broad peak with a shoulder suggesting two types of sulfur atoms. The two peaks indicated by the broken lines, which were obtained by a graphical resolution, were almost equal in intensity. The peak with the lower binding energy of the two in the S(2p) ...
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.