Astronomy Day 2006: A short presentation on eclipsing binary stars
... Just what are they? Why do we care? It is recognized as fact by astronomers that well over half of the stars in the universe belong to multiple systems. You might think of our Sun as being an exceptional system that involves only one star and you would be right. ...
... Just what are they? Why do we care? It is recognized as fact by astronomers that well over half of the stars in the universe belong to multiple systems. You might think of our Sun as being an exceptional system that involves only one star and you would be right. ...
Space Test: Practice Questions and Answers 1. Who discovered
... A protostar is the first stage after a nebula. In a protostar hydrogen fusion has not yet started. 24. Describe the steady state theory? How was it different than the theory of the big bang? ...
... A protostar is the first stage after a nebula. In a protostar hydrogen fusion has not yet started. 24. Describe the steady state theory? How was it different than the theory of the big bang? ...
First detection of a planet that survived the red giant expansion of its
... is really at the limit: it appears more likely that the Earth will not survive the red giant expansion of the Sun either, but it is not for sure. All this will happen in about five billion years, when the Earth will be more or less the same age as V 391 Pegasi b, i.e. ten billion years. This make ...
... is really at the limit: it appears more likely that the Earth will not survive the red giant expansion of the Sun either, but it is not for sure. All this will happen in about five billion years, when the Earth will be more or less the same age as V 391 Pegasi b, i.e. ten billion years. This make ...
Stellar Evolution
... As hydrogen is converted to helium the core gets a little denser and reactions speed up raising the luminosity ...
... As hydrogen is converted to helium the core gets a little denser and reactions speed up raising the luminosity ...
The Life of a Star
... The core begins to yield to gravity and starts to shrink As it shrinks, it grows hotter and denser, and a new series of nuclear reactions, temporarily halting the collapse The core becomes essentially just iron, (because of iron's nuclear structure, it does not permit its atoms to fuse into he ...
... The core begins to yield to gravity and starts to shrink As it shrinks, it grows hotter and denser, and a new series of nuclear reactions, temporarily halting the collapse The core becomes essentially just iron, (because of iron's nuclear structure, it does not permit its atoms to fuse into he ...
Chapter 27 Stars and Galaxies
... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
... 2. Elliptical: nearly spherical with very bright centers; no spiral arms No young stars, dust, or gas ...
CONSTELLATION DELPHINUS, THE DOLPHIN
... Delphinus is a constellation in the northern sky, close to the celestial equator. Its name is Latin for dolphin. Delphinus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains among the 88 modern constellations recognized by the International Astronomical Uni ...
... Delphinus is a constellation in the northern sky, close to the celestial equator. Its name is Latin for dolphin. Delphinus was one of the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains among the 88 modern constellations recognized by the International Astronomical Uni ...
astronomy final exam - Physics and Astronomy
... What is the cosmic background radiation and why is it important? What is Dark Matter and Dark Energy and what is their role in modern cosmology? What is meant by the term “Multiverse?” How would you define Life? What is a curious biochemical feature of life on earth? What does the term “encephaliza ...
... What is the cosmic background radiation and why is it important? What is Dark Matter and Dark Energy and what is their role in modern cosmology? What is meant by the term “Multiverse?” How would you define Life? What is a curious biochemical feature of life on earth? What does the term “encephaliza ...
Science Journals * 3-18-13
... • There are billions and billions of stars in the galaxy. • To make writing the mass of these stars easier, the Sun is the frame of reference and the Sun is equal to one solar mass. • Smaller stars < one solar mass • Larger stars> one solar mass ...
... • There are billions and billions of stars in the galaxy. • To make writing the mass of these stars easier, the Sun is the frame of reference and the Sun is equal to one solar mass. • Smaller stars < one solar mass • Larger stars> one solar mass ...
PHYS 175 (2014) Final Examination Name: ___SOLUTION_____
... eventual state. Label each major feature on its track. ...
... eventual state. Label each major feature on its track. ...
Lecture 13
... 1cm shifts to .9999999 cm. Not much. To say you were 5mph over the limit needs to measure one part in 100million! ...
... 1cm shifts to .9999999 cm. Not much. To say you were 5mph over the limit needs to measure one part in 100million! ...
the size and structure of the universe
... much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Black holes are the evolutionary endpoints of stars at least 10 to 15 times as massive as the Sun. ...
... much mass concentrated in it that there is no way for a nearby object to escape its gravitational pull. Black holes are the evolutionary endpoints of stars at least 10 to 15 times as massive as the Sun. ...
Star Life Guided Notes
... Once _____ is in the core, outwards pressure ceases Core ________ at 1/4 the speed of light & takes about 1/10 of a second Collapse of the core to about 100 km across Outer layers “bounce” of the solid core Releases 100x the energy of our sun produces in it’s lifetime -- in 1/10 of a ...
... Once _____ is in the core, outwards pressure ceases Core ________ at 1/4 the speed of light & takes about 1/10 of a second Collapse of the core to about 100 km across Outer layers “bounce” of the solid core Releases 100x the energy of our sun produces in it’s lifetime -- in 1/10 of a ...
Birth and Life of a Star
... used and the star starts to ‘burn’ Helium this has greater radiant forces and so the outer layers expand to form a red giant. One and a half billion years later, the surface of the star is 3.3 times the size it is now, and its temperature about 4300 degrees. ...
... used and the star starts to ‘burn’ Helium this has greater radiant forces and so the outer layers expand to form a red giant. One and a half billion years later, the surface of the star is 3.3 times the size it is now, and its temperature about 4300 degrees. ...
Birth and Life of a Star
... used and the star starts to ‘burn’ Helium this has greater radiant forces and so the outer layers expand to form a red giant. One and a half billion years later, the surface of the star is 3.3 times the size it is now, and its temperature about 4300 degrees. ...
... used and the star starts to ‘burn’ Helium this has greater radiant forces and so the outer layers expand to form a red giant. One and a half billion years later, the surface of the star is 3.3 times the size it is now, and its temperature about 4300 degrees. ...
combined astro show 2013
... • Will the Universe expand forever or collapse in a Big Crunch? • Oscillating Universe? • The expansion of the Universe is speeding up! • Dark Energy? • Dark Matter? • Big Freeze? ...
... • Will the Universe expand forever or collapse in a Big Crunch? • Oscillating Universe? • The expansion of the Universe is speeding up! • Dark Energy? • Dark Matter? • Big Freeze? ...
Measuring Stars
... Luminosity from Spectral Class Suppose you have a G2 star. What is its luminosity? •90% of all stars are main sequence G2: L L B5: L 800 L K5: L 0.1L •For main sequence stars, the spectral type tells you the luminosity •Together with brightness, this tells you the distance ...
... Luminosity from Spectral Class Suppose you have a G2 star. What is its luminosity? •90% of all stars are main sequence G2: L L B5: L 800 L K5: L 0.1L •For main sequence stars, the spectral type tells you the luminosity •Together with brightness, this tells you the distance ...
5th Grade Solar System - Mrs. Kellogg`s 5th Grade Class
... Sun has a powerful gravitation pull *Sun’s gravity is responsible for the orbits of planets around the sun ...
... Sun has a powerful gravitation pull *Sun’s gravity is responsible for the orbits of planets around the sun ...
Starlight and What it Tells Us
... The Heavens Are Not Changeless • The Stars Move – Most of our constellations would have been unrecognizable to Neanderthal Man ...
... The Heavens Are Not Changeless • The Stars Move – Most of our constellations would have been unrecognizable to Neanderthal Man ...
The Hertzsprung-Russell Diagram
... you know the stars are all at the same distance. Then apparent brightness vs spectral type is basically the same as luminosity vs temperature. They found that stars only appear in certain parts of the diagram. ...
... you know the stars are all at the same distance. Then apparent brightness vs spectral type is basically the same as luminosity vs temperature. They found that stars only appear in certain parts of the diagram. ...
Seasonal Motion
... • Small discrepancy between sun’s motion and motion of stars • Sidereal vs solar day • At noon, say, the sun is not exactly in front of the same stars on the next day. – It is exactly in the south – The stars are faster, so a little west of south ...
... • Small discrepancy between sun’s motion and motion of stars • Sidereal vs solar day • At noon, say, the sun is not exactly in front of the same stars on the next day. – It is exactly in the south – The stars are faster, so a little west of south ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.