Stellar Birth - Chabot College
... 2. Are stars still forming today? If so, where? 3. Do more massive stars shine longer than less massive ones? What is the reason? ...
... 2. Are stars still forming today? If so, where? 3. Do more massive stars shine longer than less massive ones? What is the reason? ...
Physics 127 Descriptive Astronomy Homework #16
... 10-7. If a red star and a blue star both have the same radius and both are the same distance from Earth, which one looks brighter in the night sky? Explain why.? The blue star, being hotter than the red star, will appear brighter since the two stars are the same size and same distance from the earth ...
... 10-7. If a red star and a blue star both have the same radius and both are the same distance from Earth, which one looks brighter in the night sky? Explain why.? The blue star, being hotter than the red star, will appear brighter since the two stars are the same size and same distance from the earth ...
Stars
... Mizar, 88 light years distant, is the middle star in the handle of the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too ...
... Mizar, 88 light years distant, is the middle star in the handle of the Big Dipper. It was the first binary star system to be imaged with a telescope. Spectroscopic observations show periodic Doppler shifts in the spectra of Mizar A and B, indicating that they are each binary stars. But they were too ...
REVIEW: STAR`S TEST
... What factor determines a star’s color ? _______surface temperature______________________________ The apparent magnitude of a star tells you how bright the star is as viewed from A nebula is a huge cloud of gas, primarily composed of hydrogen A nebula becomes a star when _______fusion takes place____ ...
... What factor determines a star’s color ? _______surface temperature______________________________ The apparent magnitude of a star tells you how bright the star is as viewed from A nebula is a huge cloud of gas, primarily composed of hydrogen A nebula becomes a star when _______fusion takes place____ ...
Neutron Stars - Otterbein University
... • core continues to cool and contract • Size ~ Earth • Density: a million times that of Earth – 1 cubic cm has 1000 kg of mass! ...
... • core continues to cool and contract • Size ~ Earth • Density: a million times that of Earth – 1 cubic cm has 1000 kg of mass! ...
AN INTRODUCTION TO ASTRONOMY Dr. Uri Griv Department of Physics, Ben-Gurion University
... • Polar star: mps = +2.0 Sun’s apparent magnitude msun ≈ −26.7 → fsun /fps = ... ...
... • Polar star: mps = +2.0 Sun’s apparent magnitude msun ≈ −26.7 → fsun /fps = ... ...
Week 11 Answers
... The more massive stars have shorter lifetimes. Also, the more mass that a main sequence star has, the higher its surface temperature. Cluster D has main sequence stars with surface temperatures all the way up to 20,000 degrees and more. These are stars that do not live for very long as main sequence ...
... The more massive stars have shorter lifetimes. Also, the more mass that a main sequence star has, the higher its surface temperature. Cluster D has main sequence stars with surface temperatures all the way up to 20,000 degrees and more. These are stars that do not live for very long as main sequence ...
What is it? - Carmenes - Calar Alto Observatory
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
... highly-stabilised spectroscopy for measuring the radial velocity reflex motion of the host star induced by unseen companions, the minimum mass of the newly discovered exoplanets is getting lower and lower. However, in spite of the efforts of astronomers, we have not been able to detect yet the first ...
PHYS 175 Fall 2014 Final Recitation Ch. 16 The Sun
... Photons released in the core (where fusion takes place) collide almost instantaneously with other core constituents. This energy gradually flows outward, until the density of the sun decreases sufficiently to allow for radiative diffusion of the energy. Again, the photons still undergo many collisio ...
... Photons released in the core (where fusion takes place) collide almost instantaneously with other core constituents. This energy gradually flows outward, until the density of the sun decreases sufficiently to allow for radiative diffusion of the energy. Again, the photons still undergo many collisio ...
ASTR2050 Spring 2005 •
... • Composite spectrum binary: Two stellar spectra • Eclipsing binary: Information from “light curves” • Astrometric binary: Watch a “single” star wobble • Spectrographic binary: Doppler shifted spectrum ...
... • Composite spectrum binary: Two stellar spectra • Eclipsing binary: Information from “light curves” • Astrometric binary: Watch a “single” star wobble • Spectrographic binary: Doppler shifted spectrum ...
Stars
... Apparent magnitude: brightness as seen from Earth Absolute magnitude: brightness if it were a standard distance from Earth ...
... Apparent magnitude: brightness as seen from Earth Absolute magnitude: brightness if it were a standard distance from Earth ...
Astrophysics
... Black Hole: With very massive stars, the inner core collapses but continues to do so until it becomes nothing more than a point mass. Point mass singularity, and this breaks the laws of Physics. The strength of gravity inside a black hole is so massive that nothing can escape, not even light (whic ...
... Black Hole: With very massive stars, the inner core collapses but continues to do so until it becomes nothing more than a point mass. Point mass singularity, and this breaks the laws of Physics. The strength of gravity inside a black hole is so massive that nothing can escape, not even light (whic ...
Maui Stargazing April Observing List DEEP SPACE OBJECTS
... A planetary nebula is a kind of emission nebula consisting of an expanding glowing shell of ionized gas ejected from old red giant stars late in their lives. GLOBULAR STAR CLUSTERS A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are ...
... A planetary nebula is a kind of emission nebula consisting of an expanding glowing shell of ionized gas ejected from old red giant stars late in their lives. GLOBULAR STAR CLUSTERS A globular cluster is a spherical collection of stars that orbits a galactic core as a satellite. Globular clusters are ...
A Star is Born!
... • The Zero Age Main Sequence (ZAMS) represents the onset or start of nuclear burning (fusion) • The properties of a star on the ZAMS are primarily determined by its mass, somewhat dependent on composition (He and heavier elements) ...
... • The Zero Age Main Sequence (ZAMS) represents the onset or start of nuclear burning (fusion) • The properties of a star on the ZAMS are primarily determined by its mass, somewhat dependent on composition (He and heavier elements) ...
WebQuest-The-Life-Cycle-of-Stars-1
... and see pictures of the protostars of M16: The Eagle Nebula and other nebulae on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars. 1) Compare the mass of our sun to Sirius? To Proxima Centauri? 2) Based on its mass, will our sun be aro ...
... and see pictures of the protostars of M16: The Eagle Nebula and other nebulae on this page. Continue by reading up on Main Sequence Stars and find out how our sun compares in mass to other stars. 1) Compare the mass of our sun to Sirius? To Proxima Centauri? 2) Based on its mass, will our sun be aro ...
Starlight (conclusion)
... temperature (Wien’s Law) • Spectral lines give chemical composition, temperature (also), speed of rotation (How?) and other properties • Examples of stellar spectra (Figure 16.11)…what can we say? ...
... temperature (Wien’s Law) • Spectral lines give chemical composition, temperature (also), speed of rotation (How?) and other properties • Examples of stellar spectra (Figure 16.11)…what can we say? ...
Observing the Solar System
... object in the Solar System. • They are irregular shaped, some resemble lumpy potatoes, while others look like rocks. • Asteroids are made up of iron, nickel, stone or a combination of them. • It is believed that asteroids are actually parts of the solar system that never joined together. • Most aste ...
... object in the Solar System. • They are irregular shaped, some resemble lumpy potatoes, while others look like rocks. • Asteroids are made up of iron, nickel, stone or a combination of them. • It is believed that asteroids are actually parts of the solar system that never joined together. • Most aste ...
Telescopes (continued). Properties of Stars.
... Spectral Type The surface temperature also determines the line spectrum of a star. Hot stars display lines of highly ionized elements, while cool stars show molecular lines. Stars are classified by assigning a spectral type. The hottest stars are called spectral type O, followed by B, A, F, G, K, M ...
... Spectral Type The surface temperature also determines the line spectrum of a star. Hot stars display lines of highly ionized elements, while cool stars show molecular lines. Stars are classified by assigning a spectral type. The hottest stars are called spectral type O, followed by B, A, F, G, K, M ...
Practice Homework 2: Properties of Stars 1. Star A is 100 times more
... 6. The Light in sun is created in the interior of the sun which is extremely hot and dense while the outer layers are relatively colder. What kind of spectrum it should produce? Helium in the sun causes absorption at certain frequencies, in which regions of sun do you think this mostly occurs? 7. Th ...
... 6. The Light in sun is created in the interior of the sun which is extremely hot and dense while the outer layers are relatively colder. What kind of spectrum it should produce? Helium in the sun causes absorption at certain frequencies, in which regions of sun do you think this mostly occurs? 7. Th ...
Stars
... Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most of its life is in this phase ...
... Eventually, it reaches a critical mass and nuclear fusion begins. • Begins the main sequence phase of the star • Most of its life is in this phase ...
22 Stellar Remnant/HR Diagram
... Guess why the classifications are so weird… Assigned a letter in alphabetical ...
... Guess why the classifications are so weird… Assigned a letter in alphabetical ...
AIM: HOW DO STARS FORM?
... 6. The moon is a natural satellite that has (give a fraction) less the gravitational pull of the Earth. 7. During what month is the Earth experiencing ...
... 6. The moon is a natural satellite that has (give a fraction) less the gravitational pull of the Earth. 7. During what month is the Earth experiencing ...