The Superhero's Universe: Observing the Cosmos with X-ray Vision and Beyond
... Galaxy: Centaurus A ★ Discovered in 1847 ★ 14 million light-years away ★ 5th brightest visible galaxy ...
... Galaxy: Centaurus A ★ Discovered in 1847 ★ 14 million light-years away ★ 5th brightest visible galaxy ...
Events: - Temecula Valley Astronomers
... As the sun sets, I try to point out the first stars visible - usually the summer triangle. I talk about constellations and asterisms. Once the sky is dark, our first targets are man-made satellites. Many web sites and cell phone apps help you find what is visible. While we are waiting for them to co ...
... As the sun sets, I try to point out the first stars visible - usually the summer triangle. I talk about constellations and asterisms. Once the sky is dark, our first targets are man-made satellites. Many web sites and cell phone apps help you find what is visible. While we are waiting for them to co ...
The Cosmic Perspective Star Stuff
... a) In this system, the lower mass star must have evolved faster than the higher mass one. b) The red giant might be made of some different elements, so it evolved faster. c) The lower mass star used to be a more massive main sequence star, but when it became a giant some of its mass was transferr ...
... a) In this system, the lower mass star must have evolved faster than the higher mass one. b) The red giant might be made of some different elements, so it evolved faster. c) The lower mass star used to be a more massive main sequence star, but when it became a giant some of its mass was transferr ...
Slide 1
... Denis A. Leahy, Sharon M. Morsink and Yi Chou The accreting millisecond pulsar XTE J1807-294 is studied through a pulse-shape modeling analysis. The model includes blackbody and Comptonized emission from the one visible hot spot and makes use of the Oblate Schwarzschild approximation for ray-tracing ...
... Denis A. Leahy, Sharon M. Morsink and Yi Chou The accreting millisecond pulsar XTE J1807-294 is studied through a pulse-shape modeling analysis. The model includes blackbody and Comptonized emission from the one visible hot spot and makes use of the Oblate Schwarzschild approximation for ray-tracing ...
Stellar Dynamics
... of the Milky Way appear to lie in a flattened disk-like distribution. The mid-plane of this distribution is called the “supergalactic plane”, which is nearly perpendicular to the disk of the Milky Way. In Groups, the dominant species of galaxies tend to be spirals (there are Groups known to consist ...
... of the Milky Way appear to lie in a flattened disk-like distribution. The mid-plane of this distribution is called the “supergalactic plane”, which is nearly perpendicular to the disk of the Milky Way. In Groups, the dominant species of galaxies tend to be spirals (there are Groups known to consist ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... so requires knowledge of luminosity and apparent brightness; apparent brightness can easily be measured with a CCD camera; the luminosity can be determined if we know the temperature of the star (obtained form its spectrum) and the stellar type so the HR can be used to find luminosity. ...
... so requires knowledge of luminosity and apparent brightness; apparent brightness can easily be measured with a CCD camera; the luminosity can be determined if we know the temperature of the star (obtained form its spectrum) and the stellar type so the HR can be used to find luminosity. ...
Hubblecast Episode 48: Deep Observations of the Andromeda
... unprecedented detail. Most of the stars in this image are outside the Milky Way and lie over two million light-years away. Its one of the deepest, most detailed images ever made of a galaxy outside our own. ...
... unprecedented detail. Most of the stars in this image are outside the Milky Way and lie over two million light-years away. Its one of the deepest, most detailed images ever made of a galaxy outside our own. ...
Integrative Studies 410 Our Place in the Universe
... • Fairly easy calculation using Newton law of universal gravity • Again: need to know distance Earth-Sun • General idea: the faster the Earth goes around the Sun, the more gravitational pull the more massive the Sun • Earth takes 1 year to travel 2π (93 million miles) Sun’s Mass = 300,000 that ...
... • Fairly easy calculation using Newton law of universal gravity • Again: need to know distance Earth-Sun • General idea: the faster the Earth goes around the Sun, the more gravitational pull the more massive the Sun • Earth takes 1 year to travel 2π (93 million miles) Sun’s Mass = 300,000 that ...
The physics of star formation
... inefficiently, typically turning only a few percent of their mass into stars before being dispersed. The fact that molecular clouds do not quickly turn most of their mass into stars, despite the strong dominance of gravity over thermal pressure, has long been considered problematic, and has led to t ...
... inefficiently, typically turning only a few percent of their mass into stars before being dispersed. The fact that molecular clouds do not quickly turn most of their mass into stars, despite the strong dominance of gravity over thermal pressure, has long been considered problematic, and has led to t ...
Shining Light on the Stars: The Hertzsprung-Russell
... Remember, the HR Diagram shows the temperatures of stars versus their luminosities. Our Sun is located here on the diagram, and as before, the 122 brightest stars visible in the night sky from Earth are located here. But what about all the stars in the nearby solar neighborhood, most of which are to ...
... Remember, the HR Diagram shows the temperatures of stars versus their luminosities. Our Sun is located here on the diagram, and as before, the 122 brightest stars visible in the night sky from Earth are located here. But what about all the stars in the nearby solar neighborhood, most of which are to ...
Formation of the Solar System
... Radiation Pressure and the Solar Wind Two other processes are also important for driving light gases from the inner part of the solar system. Radiation pressure: Photons act like particles and push whatever particles and dust they run into. ...
... Radiation Pressure and the Solar Wind Two other processes are also important for driving light gases from the inner part of the solar system. Radiation pressure: Photons act like particles and push whatever particles and dust they run into. ...
15.1 Introduction
... further collapse; as a consequence, the maximum core temperature reached in these stars is lower than the T ' 6 × 108 K required for carbon fusion (Lecture 7.4.4). During the latest stages of evolution on the AGB, these stars undergo strong mass loss which removes the remaining envelope, leaving as ...
... further collapse; as a consequence, the maximum core temperature reached in these stars is lower than the T ' 6 × 108 K required for carbon fusion (Lecture 7.4.4). During the latest stages of evolution on the AGB, these stars undergo strong mass loss which removes the remaining envelope, leaving as ...
LISTENING FOR THE HUM OF NEUTRON STARS IN THE CENTER
... of its lifetime. This explosion is extremely luminous: for a few weeks the supernova can outshine an entire galaxy and radiate as much energy as the Sun might radiate over its full lifetime. Most of the material of the star is expelled and what remains is an extremely dense and compact object. Conti ...
... of its lifetime. This explosion is extremely luminous: for a few weeks the supernova can outshine an entire galaxy and radiate as much energy as the Sun might radiate over its full lifetime. Most of the material of the star is expelled and what remains is an extremely dense and compact object. Conti ...
Linking Asteroids and Meteorites through Reflectance
... • This is about the same number of grains of sand in every beach in the world ...
... • This is about the same number of grains of sand in every beach in the world ...
The double-degenerate, super-Chandrasekhar nucleus of the
... system seems to have first undergone a phase of mass transfer via wind or stable Roche lobe overflow (RLOF), and then a CE. This is likely, as in order to have two oversized pre-WD stars with R=0.68-0.7 R⊙ still hot, the two events must have happened fast and consecutively. In addition, for the syst ...
... system seems to have first undergone a phase of mass transfer via wind or stable Roche lobe overflow (RLOF), and then a CE. This is likely, as in order to have two oversized pre-WD stars with R=0.68-0.7 R⊙ still hot, the two events must have happened fast and consecutively. In addition, for the syst ...
Page 1 of 4 Name PSCI 1055 Test #4 (Form B) Spring 2008 Buckley
... 6. (10 points) An old manuscript is found and carbon-14 dating is used to estimate its age. Carbon-14 decays to N-14 with a half-life of 5730 years. A measurement of the abundance of these two nuclides indicates there are now 4 parts of carbon14 to 12 parts of nitrogen-14. a. How many parts of carb ...
... 6. (10 points) An old manuscript is found and carbon-14 dating is used to estimate its age. Carbon-14 decays to N-14 with a half-life of 5730 years. A measurement of the abundance of these two nuclides indicates there are now 4 parts of carbon14 to 12 parts of nitrogen-14. a. How many parts of carb ...
II Light
... ‘electron cloud’, but this orbital picture is OK for understanding the energy levels. Understanding blackbodies was impossible before quantum mechanics (and it was a problem wrestled-with by many scientists). Physicists and chemists will get to do quantum mechanics in great detail from second year, ...
... ‘electron cloud’, but this orbital picture is OK for understanding the energy levels. Understanding blackbodies was impossible before quantum mechanics (and it was a problem wrestled-with by many scientists). Physicists and chemists will get to do quantum mechanics in great detail from second year, ...
May 2015
... throughout the Universe. It is only in these Supernovae that the heavier elements (from Iron and above on the periodic table) are created. The Sun is a second or third generation star since these heavier elements exist in its upper atmosphere as well as on the Earth and the other planets. It has bee ...
... throughout the Universe. It is only in these Supernovae that the heavier elements (from Iron and above on the periodic table) are created. The Sun is a second or third generation star since these heavier elements exist in its upper atmosphere as well as on the Earth and the other planets. It has bee ...
Chapter 8 powerpoint presentation
... H atoms are ionized they can not produce any absorption lines. This is described by the Saha equation. ...
... H atoms are ionized they can not produce any absorption lines. This is described by the Saha equation. ...
Weighing a galaxy / Black holes / Quasars —16 Nov Nov-09
... speed is greater than speed of light: nothing can escape. • If sun were squeezed to 3-km radius, light could not escape from it. • If Earth were squeezed to 1-cm radius, light could not escape from it. • Schwarzschild radius is boundary between inside & outside of a black hole. – Light can escape if ...
... speed is greater than speed of light: nothing can escape. • If sun were squeezed to 3-km radius, light could not escape from it. • If Earth were squeezed to 1-cm radius, light could not escape from it. • Schwarzschild radius is boundary between inside & outside of a black hole. – Light can escape if ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.