Stars III - Indiana University Astronomy
... • The process by which elements (nuclei) are created (synthesized) is called nucleosynthesis • Nucleosynthesis has occurred since the creation of the universe and will essentially go on forever • The elements created come together to form everything material we know, including us ...
... • The process by which elements (nuclei) are created (synthesized) is called nucleosynthesis • Nucleosynthesis has occurred since the creation of the universe and will essentially go on forever • The elements created come together to form everything material we know, including us ...
Lectures 12 & 13 powerpoint (stellar death)
... Evolution of binary systems: Gravitational field of the stars combined with the rotation of the system define the “Roche surface.” Matter inside a star’s Roche surface is gravitationally bound to the star, but… Two ways in which matter can be transferred through L1; ...
... Evolution of binary systems: Gravitational field of the stars combined with the rotation of the system define the “Roche surface.” Matter inside a star’s Roche surface is gravitationally bound to the star, but… Two ways in which matter can be transferred through L1; ...
AST 443/PHY 517 Homework 1
... 11. Show that the angular distance D between two points on the surface of a sphere, with coordinates (α1 ,δ1 ),(α2 ,δ2 ), is given by the expression cosD = sinδ1 sinδ2 + cosδ1 cosδ2 cos(α2 − α1 ) 12. If you were to pilot a plane from New York City to Tokyo on a great circle route, what heading shou ...
... 11. Show that the angular distance D between two points on the surface of a sphere, with coordinates (α1 ,δ1 ),(α2 ,δ2 ), is given by the expression cosD = sinδ1 sinδ2 + cosδ1 cosδ2 cos(α2 − α1 ) 12. If you were to pilot a plane from New York City to Tokyo on a great circle route, what heading shou ...
Optical Properties of Condensed Matters
... may be taken to be real with no imaginary component (approximately constant n=1.77) R = 0.077, hence T =(1-R)2=0.85 ...
... may be taken to be real with no imaginary component (approximately constant n=1.77) R = 0.077, hence T =(1-R)2=0.85 ...
What is the Big Bang Theory?
... Eventually matter cooled and condensed into galaxies and stars. How did the big bang form galaxies? Hydrogen and Helium are left in space after the Big Bang. Planets formed. That the universe is still expanding. ...
... Eventually matter cooled and condensed into galaxies and stars. How did the big bang form galaxies? Hydrogen and Helium are left in space after the Big Bang. Planets formed. That the universe is still expanding. ...
Chpt12a
... As soon as the hydrogen becomes substantially depleted the helium core begins to shrink under the increased pressure of the unbalanced gravity. The increased pressure and heat causes the hydrogen shell to burn even faster causing the star to get brighter as the helium core continues to shrink and he ...
... As soon as the hydrogen becomes substantially depleted the helium core begins to shrink under the increased pressure of the unbalanced gravity. The increased pressure and heat causes the hydrogen shell to burn even faster causing the star to get brighter as the helium core continues to shrink and he ...
Eclipsing binary stars
... Apparent magnitude is a numerical scale to describe how bright each star appears in the sky. The lower the magnitude, the brighter the star. Because the stars are on different distances from Earth and brightness depends on this distance, we introduce absolute magnitude. This is defined as the apparent ...
... Apparent magnitude is a numerical scale to describe how bright each star appears in the sky. The lower the magnitude, the brighter the star. Because the stars are on different distances from Earth and brightness depends on this distance, we introduce absolute magnitude. This is defined as the apparent ...
Does Dark Energy Really Exist? Or does Earth occupy a very
... principle, a surprisingly different picture of what could account for the observations emerges. Most of us are very familiar with the idea that our planet is nothing more than a tiny speck orbiting a typical star, somewhere near the edge of an otherwise unnoteworthy galaxy. In the midst of a univers ...
... principle, a surprisingly different picture of what could account for the observations emerges. Most of us are very familiar with the idea that our planet is nothing more than a tiny speck orbiting a typical star, somewhere near the edge of an otherwise unnoteworthy galaxy. In the midst of a univers ...
Summer Triangle (Winter in the south hemisphere) Lyra
... which Zeus transformed himself to seduce Leda, the Queen of Sparta. Leda laid the eggs which hatched Helen of Troy and the twins, Castor and Pollux. Cygnus is sometimes made out to be Orpheus 奧菲斯, the Greek tragic hero who was murdered for refusing to honor Dionysus. In death, Orpheus was transforme ...
... which Zeus transformed himself to seduce Leda, the Queen of Sparta. Leda laid the eggs which hatched Helen of Troy and the twins, Castor and Pollux. Cygnus is sometimes made out to be Orpheus 奧菲斯, the Greek tragic hero who was murdered for refusing to honor Dionysus. In death, Orpheus was transforme ...
File
... – Our solar system is full of planets, moons, asteroids and comets, all of which revolve around the Sun at the center. – When a star forms from a nebula, gravity pulls most of the material into the new star, but some may also clump together to form objects in a solar system. ...
... – Our solar system is full of planets, moons, asteroids and comets, all of which revolve around the Sun at the center. – When a star forms from a nebula, gravity pulls most of the material into the new star, but some may also clump together to form objects in a solar system. ...
Fiber Optic
... The most common types of photo detectors are the positive intrinsic negative photodiode ( PIN ) and the avalanche ...
... The most common types of photo detectors are the positive intrinsic negative photodiode ( PIN ) and the avalanche ...
Astronomical Challenges to Evolution The Big Bang Theory Five
... Disappearing Hydrogen: When the stars are burning they convert hydrogen to helium. Fred Hoyle, a leading astronomer, maintains that, if the universe were as old as Big Bang theorists contend, there should be little hydrogen in it. It would all have been transformed into helium by now. Yet stellar sp ...
... Disappearing Hydrogen: When the stars are burning they convert hydrogen to helium. Fred Hoyle, a leading astronomer, maintains that, if the universe were as old as Big Bang theorists contend, there should be little hydrogen in it. It would all have been transformed into helium by now. Yet stellar sp ...
Astronomy 110 HOMEWORK #2 – Fall Semester Use a calculator
... ratios, and keep track of units!) ...
... ratios, and keep track of units!) ...
spectral typing of late-type stellar companions to young stars
... of the SRF rather than the true spectra of the primary causes a small error. There are two components of this error. One is that there may be an error in the reported spectral type of the primary; it may be either later or earlier than what we use. On most stars, the difference between various deter ...
... of the SRF rather than the true spectra of the primary causes a small error. There are two components of this error. One is that there may be an error in the reported spectral type of the primary; it may be either later or earlier than what we use. On most stars, the difference between various deter ...
A short history of astronomy and telescopes
... “seeing things far away as if they were nearby” • 1609 Galileo built a 1 diameter refracting telescope with 3x magnification and made observations of celestial objects ...
... “seeing things far away as if they were nearby” • 1609 Galileo built a 1 diameter refracting telescope with 3x magnification and made observations of celestial objects ...
KU1
... Telescopes have been designed to detect waves from space. Name a type of wave other than light which can be detected from space. (KU1) ...
... Telescopes have been designed to detect waves from space. Name a type of wave other than light which can be detected from space. (KU1) ...
Targets for Small Telescopes
... M11 is known as The Wild Duck Cluster. It is also catalogued as NGC 6705. It was discovered in 1681by Gottfried Kirsch. It is located 2° southeast of Beta Scuti. It sits in a notch in the north edge of the Scutum star cloud. The cluster contains about 680 stars, 400 of which shine at brighter th ...
... M11 is known as The Wild Duck Cluster. It is also catalogued as NGC 6705. It was discovered in 1681by Gottfried Kirsch. It is located 2° southeast of Beta Scuti. It sits in a notch in the north edge of the Scutum star cloud. The cluster contains about 680 stars, 400 of which shine at brighter th ...
Extreme Stars
... One star is invisible! An unseen blue star hides in a disk of dust that orbits ...
... One star is invisible! An unseen blue star hides in a disk of dust that orbits ...
JCMT Debris Disks Survey - Physics and Astronomy
... 4. be the basis of source lists for future observing campaigns using e.g., ALMA and JWST; 5. provide limits on the presence of dust that are vital to future missions like Darwin/TPF. ...
... 4. be the basis of source lists for future observing campaigns using e.g., ALMA and JWST; 5. provide limits on the presence of dust that are vital to future missions like Darwin/TPF. ...
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.