Phys133 Sample MidTerm #2 Covers Chs.10
... 4) What happens when a star exhausts its core hydrogen supply? A) It contracts, becoming hotter and brighter. B) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. C) It expands, becoming bigger but dimmer. D) It contr ...
... 4) What happens when a star exhausts its core hydrogen supply? A) It contracts, becoming hotter and brighter. B) Its core contracts, but its outer layers expand and the star becomes bigger but cooler and therefore remains at the same brightness. C) It expands, becoming bigger but dimmer. D) It contr ...
Neutron Stars and Black Holes
... •! Recent experiments uncovered evidence of a nearby supernova about 3 million years ago. •! Radioactive iron atoms have been found in ancient samples of deepocean material-- debris from this explosion. •! Explosion was close, probably a "nearmiss," which emitted intense and possibly harmful radiati ...
... •! Recent experiments uncovered evidence of a nearby supernova about 3 million years ago. •! Radioactive iron atoms have been found in ancient samples of deepocean material-- debris from this explosion. •! Explosion was close, probably a "nearmiss," which emitted intense and possibly harmful radiati ...
ph507lecnote06
... As the star cools, the random motions of the particles slow and the electric forces between ions line them up in a crystalline lattice. ...
... As the star cools, the random motions of the particles slow and the electric forces between ions line them up in a crystalline lattice. ...
powerpoint
... • Perturbations grow in matter era after decoupling proportional to scale factor. • Grows by factor of 1100/(1+zm) where zm is the end of matter domination • for open universes, 1+zm=1/10, growth factor is only 100 • BUT COBE perturbations are only 10-5 ...
... • Perturbations grow in matter era after decoupling proportional to scale factor. • Grows by factor of 1100/(1+zm) where zm is the end of matter domination • for open universes, 1+zm=1/10, growth factor is only 100 • BUT COBE perturbations are only 10-5 ...
Homework #3
... is moving one-half as fast as Star 2. What are the masses, in solar masses, of the two stars? 2) Identify each and discuss with a few sentences. a) Coronal gas b) Molecular cloud c) H II region d) T-Tauri stars 3) a) What mass (in solar masses) would a cloud composed of pure hydrogen at a temperatur ...
... is moving one-half as fast as Star 2. What are the masses, in solar masses, of the two stars? 2) Identify each and discuss with a few sentences. a) Coronal gas b) Molecular cloud c) H II region d) T-Tauri stars 3) a) What mass (in solar masses) would a cloud composed of pure hydrogen at a temperatur ...
MOL SoSe 2017 Handout Lecture 1 Habitable Universe and Planets
... Before recombination, disturbances in matter density were reflected by disturbances in photon density microwave background is a „fossil” of the early Universe’s density, Its fluctuations reflect fluctuations of matter’s density These fluctuations detected by COBE (1990s, 2006 Nobel Prize) ...
... Before recombination, disturbances in matter density were reflected by disturbances in photon density microwave background is a „fossil” of the early Universe’s density, Its fluctuations reflect fluctuations of matter’s density These fluctuations detected by COBE (1990s, 2006 Nobel Prize) ...
X-ray diffraction techniques X
... 2. Ink, dyes and paints which reflects the complementary colors when a light falls on it. 3. Astronomy: Most research telescopes have spectrographs. The measured spectra are used to determine the chemical composition and physical properties of astronomical objects (such as their temperature and velo ...
... 2. Ink, dyes and paints which reflects the complementary colors when a light falls on it. 3. Astronomy: Most research telescopes have spectrographs. The measured spectra are used to determine the chemical composition and physical properties of astronomical objects (such as their temperature and velo ...
Modern Scientific Origin Story
... cooling down as it gets bigger. Gradually energy cooled enough to become matter. One electron could stay in orbit around one proton to become an atom of hydrogen. Great clouds of hydrogen swirled around space until gravity pulled some atoms so close together that they began to burn as stars. Stars s ...
... cooling down as it gets bigger. Gradually energy cooled enough to become matter. One electron could stay in orbit around one proton to become an atom of hydrogen. Great clouds of hydrogen swirled around space until gravity pulled some atoms so close together that they began to burn as stars. Stars s ...
The Sun And Stars
... has been on the main sequence for about 5 billion years, and will persist for another 5 billion years or so before it transitions to become a Red Giant Star. Once a star has used up all of its hydrogen fuel in its core it transitions off the main sequence and becomes a red giant. Depending on the ma ...
... has been on the main sequence for about 5 billion years, and will persist for another 5 billion years or so before it transitions to become a Red Giant Star. Once a star has used up all of its hydrogen fuel in its core it transitions off the main sequence and becomes a red giant. Depending on the ma ...
Spectroscopy: High angular resolution with appropriate spectral
... COS: maximum throughput (!), resolving power matched to IGM studies--one internal reflection STIS: high angular resolution (!), selectable resolving power --four internal reflections (+ two for HST aberration) (2 out of 3 ain’t bad… can’t do faster, better, cheaper at the same time either) ...
... COS: maximum throughput (!), resolving power matched to IGM studies--one internal reflection STIS: high angular resolution (!), selectable resolving power --four internal reflections (+ two for HST aberration) (2 out of 3 ain’t bad… can’t do faster, better, cheaper at the same time either) ...
Mass-Luminosity Relation for White
... model is applicable. We adopted the continuities of temperatures, pressures, densities and opacities, as the conditions to decide the position of the interface of these two regions. As is well-known, if we use the simple Kramers opacity in the envelope, the radial dependences of temperature, pressur ...
... model is applicable. We adopted the continuities of temperatures, pressures, densities and opacities, as the conditions to decide the position of the interface of these two regions. As is well-known, if we use the simple Kramers opacity in the envelope, the radial dependences of temperature, pressur ...
Section 14
... of dust. It is what remains of a supernova that was observed on Earth in 1054. At the center of the cloud, observable in a wavelength of light that we can't see with our eyes, is the neutron star that was left behind. This neutron star, and many others, spin around very rapidly. They also have very ...
... of dust. It is what remains of a supernova that was observed on Earth in 1054. At the center of the cloud, observable in a wavelength of light that we can't see with our eyes, is the neutron star that was left behind. This neutron star, and many others, spin around very rapidly. They also have very ...
Apparent versus Event Horizon
... star's mass and its radius which sets an upper limit to the mass a white dwarf can have, beyond which it will collapse to a neutron star or, if sufficiently massive, to a black hole. Calculations put the "Chandrasekhar Limit" at 1.4 solar masses. Decades later Chandrasekhar's fundamental contributio ...
... star's mass and its radius which sets an upper limit to the mass a white dwarf can have, beyond which it will collapse to a neutron star or, if sufficiently massive, to a black hole. Calculations put the "Chandrasekhar Limit" at 1.4 solar masses. Decades later Chandrasekhar's fundamental contributio ...
Electromagnetic Spectrum activity
... This states that no two electrons in any atom have the same amount of energy associated with it and therefore cannot follow the same path. Therefore considering the first energy level, n= 1 ( n is the first quantum number), contains 2 electrons (maximum) these electrons have different spins :- one c ...
... This states that no two electrons in any atom have the same amount of energy associated with it and therefore cannot follow the same path. Therefore considering the first energy level, n= 1 ( n is the first quantum number), contains 2 electrons (maximum) these electrons have different spins :- one c ...
Black Hole
... After all the Hydrogen in the star was converted to Helium, for about a Million years other elements such as Carbon And others are cooked within the Star. The Supernova then throws them out in the Faraway Sky. Thus all the elements of which our Human Bodies are made were Cooked in faraway stars once ...
... After all the Hydrogen in the star was converted to Helium, for about a Million years other elements such as Carbon And others are cooked within the Star. The Supernova then throws them out in the Faraway Sky. Thus all the elements of which our Human Bodies are made were Cooked in faraway stars once ...
PHYSICS CHAPTER 15 NOTES DIFFRACTION AND
... Thin Film Wave Interference--the light that is incident on thin films (a soap bubble, oil or gas on a water surface) is interfered. a. The wave that is reflected off of the thin film is inverted. Since the reflected wave is inverted it is shifted out of phase by 180 degrees. ...
... Thin Film Wave Interference--the light that is incident on thin films (a soap bubble, oil or gas on a water surface) is interfered. a. The wave that is reflected off of the thin film is inverted. Since the reflected wave is inverted it is shifted out of phase by 180 degrees. ...
Formation of the Most Distant & Luminous Quasars
... – Both BHs and host galaxies build up through hierarchical mergers. – BHs accrete gas under Eddington limit in a selfregulated manner owing to feedback. • Our model should provide a viable mechanism for other luminous quasars, no exotic process is needed. ...
... – Both BHs and host galaxies build up through hierarchical mergers. – BHs accrete gas under Eddington limit in a selfregulated manner owing to feedback. • Our model should provide a viable mechanism for other luminous quasars, no exotic process is needed. ...
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.