what`s up this month – april 2017
... the middle ages the Virgin was often associated with the Virgin Mary. Spica is the brightest star in the constellation of Virgo and the 16 th brightest star in the night sky. Analysis of its parallax shows that it is located 250 light years from the Sun. It is a spectroscopic binary and rotating ell ...
... the middle ages the Virgin was often associated with the Virgin Mary. Spica is the brightest star in the constellation of Virgo and the 16 th brightest star in the night sky. Analysis of its parallax shows that it is located 250 light years from the Sun. It is a spectroscopic binary and rotating ell ...
Inside the Rainbow
... Later, a scientist named Joseph Van Fraunhofer discovered that if you pass the light from a glowing object through a special lens (a spectrometer), you will get a rainbow or spectrum that has tiny amounts of some of the colors missing. Instead of a complete rainbow, you’ll see places with tiny black ...
... Later, a scientist named Joseph Van Fraunhofer discovered that if you pass the light from a glowing object through a special lens (a spectrometer), you will get a rainbow or spectrum that has tiny amounts of some of the colors missing. Instead of a complete rainbow, you’ll see places with tiny black ...
Triple Conjunction of Jupiter and Saturn
... 'Before Christ' or 'Anno Domini,' so they say Before the Common Era or the Common Era) First, Parpola goes through other observations that have been conjectured to be linked to Jesus' birth by other scholars and scientists throughout history, including a conjunction of Venus and Jupiter in 2 BC, sup ...
... 'Before Christ' or 'Anno Domini,' so they say Before the Common Era or the Common Era) First, Parpola goes through other observations that have been conjectured to be linked to Jesus' birth by other scholars and scientists throughout history, including a conjunction of Venus and Jupiter in 2 BC, sup ...
M13 – The Great Hercules Cluster
... The quiet, peaceful nights of winter have now been replaced by summer nights full of the sounds of life. Cicadas, crickets, whippoorwills and barred owls provide a symphony for our ears while the stars of summer provide a symphony for our eyes. Go outside on a warm June night and look up at the star ...
... The quiet, peaceful nights of winter have now been replaced by summer nights full of the sounds of life. Cicadas, crickets, whippoorwills and barred owls provide a symphony for our ears while the stars of summer provide a symphony for our eyes. Go outside on a warm June night and look up at the star ...
Slides from the fourth lecture
... Swift, we began imaging the GRB field 8 minutes after the burst and continued for the following 8 days. No convincing optical/infrared candidate afterglow or supernova was found for the object. We present a re-analysis of the XRT afterglow and find an absolute position that is ~4" to the west of the ...
... Swift, we began imaging the GRB field 8 minutes after the burst and continued for the following 8 days. No convincing optical/infrared candidate afterglow or supernova was found for the object. We present a re-analysis of the XRT afterglow and find an absolute position that is ~4" to the west of the ...
celestial sphere.
... (3) The celestial sphere appears to rotate about the celestial poles (1 day cycle) Observation: Stars, Sun, Moon and planets move in counterclockwise circles around north (south) celestial pole. Objects near the celestial equator move east to west when above the horizon (“rising” in east, “setting” ...
... (3) The celestial sphere appears to rotate about the celestial poles (1 day cycle) Observation: Stars, Sun, Moon and planets move in counterclockwise circles around north (south) celestial pole. Objects near the celestial equator move east to west when above the horizon (“rising” in east, “setting” ...
1 - People Server at UNCW
... Show all of your steps in the problems for full credit. Be clear and neat in your work. Any illegible work, or scribbling in the margins, will not be graded. Put a box around your answers when appropriate.. If you need more space, you may use the back of a page and write On back of page # in the pro ...
... Show all of your steps in the problems for full credit. Be clear and neat in your work. Any illegible work, or scribbling in the margins, will not be graded. Put a box around your answers when appropriate.. If you need more space, you may use the back of a page and write On back of page # in the pro ...
Science Grade 08 Unit 11 Exemplar Lesson 02: Classifying Stars
... This unit bundles student expectations that address components and characteristics of the universe. Students learn that stars and galaxies are part of the universe and how they can be classified by their characteristics. Prior to this unit, in Grade 8, students studied the effects resulting from cyc ...
... This unit bundles student expectations that address components and characteristics of the universe. Students learn that stars and galaxies are part of the universe and how they can be classified by their characteristics. Prior to this unit, in Grade 8, students studied the effects resulting from cyc ...
Astronomy Through the Ages: 2 Middle ages through Renaissance
... with any of the models, Ptolemy’s, Copernicus’ or Tycho’s. – The best match of Mars data to a Copernican orbit left him with an discrepancy of 8 arc minutes. • It was larger than the accuracy of Tycho’s data (which was of the order 1arc minute) – After struggling over six years, Kepler finally reali ...
... with any of the models, Ptolemy’s, Copernicus’ or Tycho’s. – The best match of Mars data to a Copernican orbit left him with an discrepancy of 8 arc minutes. • It was larger than the accuracy of Tycho’s data (which was of the order 1arc minute) – After struggling over six years, Kepler finally reali ...
White Dwarf
... Surface layers pulsate and are finally ejected (slowly, at ~10s of km/s). The hot, tiny core (White Dwarf) is revealed. ...
... Surface layers pulsate and are finally ejected (slowly, at ~10s of km/s). The hot, tiny core (White Dwarf) is revealed. ...
Implications of the Search and Discovery of Life in the Universe
... • Especially for liquid water ...
... • Especially for liquid water ...
Milky Way Galaxy
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
... The Universe is filled with these star systems which themselves cluster together into larger systems. ...
Parallax
... close object with first one eye and then the other. For example, hold your thumb at the tip of your nose. Look at your thumb with first your right eye and then your left. Your thumb appears to move because your eyes are not at exactly the same place, so each eye views the thumb from a different angl ...
... close object with first one eye and then the other. For example, hold your thumb at the tip of your nose. Look at your thumb with first your right eye and then your left. Your thumb appears to move because your eyes are not at exactly the same place, so each eye views the thumb from a different angl ...
Publication - Centre for Star and Planet Formation
... these efforts has helped establish the class of circumbinary planets, which are planets that orbit around a pair of stars (6–8). Their detection has led to a revitalized effort to understand planet formation around binary stars (9, 10). A circumbinary planet can reveal itself in two ways. If the pla ...
... these efforts has helped establish the class of circumbinary planets, which are planets that orbit around a pair of stars (6–8). Their detection has led to a revitalized effort to understand planet formation around binary stars (9, 10). A circumbinary planet can reveal itself in two ways. If the pla ...
ph507rev1
... Because the flux of starlight varies with wavelength, the magnitude of a star depends upon the wavelength at which we observe. Originally, photographic plates were sensitive only to blue light, and the term photographic magnitude (mpg) still refers to magnitudes centred around 420 nm (in the blue re ...
... Because the flux of starlight varies with wavelength, the magnitude of a star depends upon the wavelength at which we observe. Originally, photographic plates were sensitive only to blue light, and the term photographic magnitude (mpg) still refers to magnitudes centred around 420 nm (in the blue re ...
92 The Nearest Star: The Sun
... size and temperature. When you look at the night sky with your naked eye from anywhere on Earth, you can see up to 8,000 stars. With a telescope you will see many more. Still others can only be detected with other technologies. These have also helped astronomers learn about the composition of the Su ...
... size and temperature. When you look at the night sky with your naked eye from anywhere on Earth, you can see up to 8,000 stars. With a telescope you will see many more. Still others can only be detected with other technologies. These have also helped astronomers learn about the composition of the Su ...
Lecture 13 Local group chapter 4 of S+G
... γ-ray emission correlates with massive star forming regions and not with the gas distribution (simulated images if the γ-ray emission was distributed like the source) • Compactness of emission regions suggests little CR diffusion • 30 Doradus star forming region is a bright source of gamma rays and ...
... γ-ray emission correlates with massive star forming regions and not with the gas distribution (simulated images if the γ-ray emission was distributed like the source) • Compactness of emission regions suggests little CR diffusion • 30 Doradus star forming region is a bright source of gamma rays and ...
Lecture21
... Pulsars • Variable stars with very well-defined periods (usually 0.252 s). • Some are measured to ~15 significant figures and rival the ...
... Pulsars • Variable stars with very well-defined periods (usually 0.252 s). • Some are measured to ~15 significant figures and rival the ...
Extra-Solar Planets
... The smallest planet found so far has a mass of about 2 Earth masses. A 5 Earth mass planet appears to be near the edge-on of the habitable zone, so it could have liquid water on its surface. The next step is to search for evidence of life on this planet (e.g., oxygen in its atmosphere), but the nece ...
... The smallest planet found so far has a mass of about 2 Earth masses. A 5 Earth mass planet appears to be near the edge-on of the habitable zone, so it could have liquid water on its surface. The next step is to search for evidence of life on this planet (e.g., oxygen in its atmosphere), but the nece ...
Note
... • Line width and strength depends on the damping constant • The line opacity in the wings is significant compared to kn • Line strength depends (approximately) on the square root of the abundance ...
... • Line width and strength depends on the damping constant • The line opacity in the wings is significant compared to kn • Line strength depends (approximately) on the square root of the abundance ...
SPECTRAL WORKSHOP
... moves in front of the star, it hides some of the star's light – this can be observed with a back-garden telescope as a periodic decrease in the light from the star. ...
... moves in front of the star, it hides some of the star's light – this can be observed with a back-garden telescope as a periodic decrease in the light from the star. ...
Energy Generation in Stars
... the protons can become sufficiently close to one another, another force, the Strong Force, will take over and bind the two nuclei together. The strong force is the force that holds together all the protons that exist in various atomic nuclei – to activate this force requires the nuclei to essentiall ...
... the protons can become sufficiently close to one another, another force, the Strong Force, will take over and bind the two nuclei together. The strong force is the force that holds together all the protons that exist in various atomic nuclei – to activate this force requires the nuclei to essentiall ...
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.