Stars I - Astronomy Centre
... • We can tell a mountain is more than a few hundred metres away, but not whether it is 2 or 5 km away • Parallax is due to our changing viewpoint as Earth orbits the Sun • With 2 AU separating our two “eyes” we can measure distances to nearby stars ...
... • We can tell a mountain is more than a few hundred metres away, but not whether it is 2 or 5 km away • Parallax is due to our changing viewpoint as Earth orbits the Sun • With 2 AU separating our two “eyes” we can measure distances to nearby stars ...
Deep Space (PDF: 224k)
... Once the material at the core is burned to iron, the star faces the ultimate energy crisis, since iron cannot be fused to gain energy. In a flash, the iron core collapses and the star releases more energy than the star produced during its entire lifetime! This is a supernova explosion that expels ma ...
... Once the material at the core is burned to iron, the star faces the ultimate energy crisis, since iron cannot be fused to gain energy. In a flash, the iron core collapses and the star releases more energy than the star produced during its entire lifetime! This is a supernova explosion that expels ma ...
Day-6
... associated with it. Nadir: The point directly under your feet, opposite the zenith Altitude: A measure of the height of an object from the ground up. It is measured perpendicular to the horizon. The horizon is 0° altitude. The Zenith is 90° altitude. Azimuth: The point along the horizon –measured ea ...
... associated with it. Nadir: The point directly under your feet, opposite the zenith Altitude: A measure of the height of an object from the ground up. It is measured perpendicular to the horizon. The horizon is 0° altitude. The Zenith is 90° altitude. Azimuth: The point along the horizon –measured ea ...
Nucleus hydrogen helium Relative Mass 1.007825 4.0037 Helium
... star may eventually form a black hole. To gain full marks in this question you should write your ideas in good English. Put them into a sensible order and use the correct scientific words. ...
... star may eventually form a black hole. To gain full marks in this question you should write your ideas in good English. Put them into a sensible order and use the correct scientific words. ...
Today`s Powerpoint
... Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV ...
... Remember, takes energetic UV photons to ionize H. Hot, massive stars produce huge amounts of these. Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV ...
GEARS Workshop Monday - Georgia Southern University
... H1504+65 and validate theoretical predictions that, if massive enough, some stars can extend their lives by tapping yet another energy source: the fusion of carbon into magnesium. However, as magnesium can also be produced by helium fusion, proof of the theory is not yet ironclad. The final link in ...
... H1504+65 and validate theoretical predictions that, if massive enough, some stars can extend their lives by tapping yet another energy source: the fusion of carbon into magnesium. However, as magnesium can also be produced by helium fusion, proof of the theory is not yet ironclad. The final link in ...
The Birth, Life, and Death of Stars
... Born in Ulm, Germany in 1879 and died in Princeton in 1955 Questions the basic tenets of Quantum Mechanics: God does not play dice with the Universe ... Yet, is awarded the 1921 Nobel Prize in Physics: ... for his discovery of the law of the photoelectric effect 1905 Einstein’s Miracle Year while wo ...
... Born in Ulm, Germany in 1879 and died in Princeton in 1955 Questions the basic tenets of Quantum Mechanics: God does not play dice with the Universe ... Yet, is awarded the 1921 Nobel Prize in Physics: ... for his discovery of the law of the photoelectric effect 1905 Einstein’s Miracle Year while wo ...
charts_set_7
... Earth-orbit parallax using ground-based telescopes good for stars within 30 pc (1000 or so). Tiny volume of Milky Way galaxy. Other methods later. Our nearest stellar neighbors ...
... Earth-orbit parallax using ground-based telescopes good for stars within 30 pc (1000 or so). Tiny volume of Milky Way galaxy. Other methods later. Our nearest stellar neighbors ...
Stellar Evolution Chapter 12
... 20. The period of a Cepheid variable star and the time of one recent maximum can be used to predict the time of a future maximum. Suppose that you calculate the time of future maximum brightness and then make measurements to observe this maximum. After the correction for Earth's orbital position has ...
... 20. The period of a Cepheid variable star and the time of one recent maximum can be used to predict the time of a future maximum. Suppose that you calculate the time of future maximum brightness and then make measurements to observe this maximum. After the correction for Earth's orbital position has ...
November 2005 - Otterbein University
... • Careful study of the Sun ~ 370 years • We have studied the Sun for only 1/27 millionth of its lifetime! ...
... • Careful study of the Sun ~ 370 years • We have studied the Sun for only 1/27 millionth of its lifetime! ...
Slide 1
... Comptonized emission from the one visible hot spot and makes use of the Oblate Schwarzschild approximation for ray-tracing. We include a scattered light contribution, which accounts for flux scattered off an equatorial accretion disk to the observer including time delays in the scattered light. We g ...
... Comptonized emission from the one visible hot spot and makes use of the Oblate Schwarzschild approximation for ray-tracing. We include a scattered light contribution, which accounts for flux scattered off an equatorial accretion disk to the observer including time delays in the scattered light. We g ...
Powerpoint for today
... gas. Some collapse under their own gravity. Others may be more stable. Magnetic fields and rotation also have some influence. Gravity makes cloud want to ...
... gas. Some collapse under their own gravity. Others may be more stable. Magnetic fields and rotation also have some influence. Gravity makes cloud want to ...
Nearby Stars - How far away is it
... Wolf 359 - 7.78 light years Getting back to nearby stars, here‘s Wolf 359. It is another dim red star. In fact, it‘s one of the least luminous stars known. Star Trek fans may recognize Wolf 359 as the scene of a great battle between the Federation and The Borg. Lalande 21185 - 8.32 light years Lalan ...
... Wolf 359 - 7.78 light years Getting back to nearby stars, here‘s Wolf 359. It is another dim red star. In fact, it‘s one of the least luminous stars known. Star Trek fans may recognize Wolf 359 as the scene of a great battle between the Federation and The Borg. Lalande 21185 - 8.32 light years Lalan ...
Finding the North Star
... …is known to astronomers as “Polaris” because of its place over the North Pole. …is really useful if you are in the Earth’s northern hemisphere, and you are lost in the wilderness on a clear night. ...
... …is known to astronomers as “Polaris” because of its place over the North Pole. …is really useful if you are in the Earth’s northern hemisphere, and you are lost in the wilderness on a clear night. ...
Way Milky the MAPPING
... within a few billion years of the birth of the universe. Those ancient stars reside in an astrophysical neighborhood known as a “bar” because of its rectangular shape that measures roughly 10,000 light-years in length. And within the bar, orbiting a powerful source of energy believed to be a superma ...
... within a few billion years of the birth of the universe. Those ancient stars reside in an astrophysical neighborhood known as a “bar” because of its rectangular shape that measures roughly 10,000 light-years in length. And within the bar, orbiting a powerful source of energy believed to be a superma ...
January 2015 - Newbury Astronomical Society
... The southern sky at about 21:00 GMT (9 o’clock p.m.) The chart above shows the night sky looking south at about 21:00 on 15th January. West is to the right and east to the left. The curved line across the sky is the ecliptic. This is the imaginary line along which the Sun, Moon and planets appear to ...
... The southern sky at about 21:00 GMT (9 o’clock p.m.) The chart above shows the night sky looking south at about 21:00 on 15th January. West is to the right and east to the left. The curved line across the sky is the ecliptic. This is the imaginary line along which the Sun, Moon and planets appear to ...
Planetarium Key Points
... Constellation shape changes with epoch and their visibility changes with epoch and observer position; shape is not for ever because of star’s proper motion, but no detectable change is observable during human life, at naked eye Constellations and asterisms; we use structures invented by assirian ...
... Constellation shape changes with epoch and their visibility changes with epoch and observer position; shape is not for ever because of star’s proper motion, but no detectable change is observable during human life, at naked eye Constellations and asterisms; we use structures invented by assirian ...
Cygnus (constellation)
Cygnus /ˈsɪɡnəs/ is a northern constellation lying on the plane of the Milky Way, deriving its name from the Latinized Greek word for swan. The swan is one of the most recognizable constellations of the northern summer and autumn, it features a prominent asterism known as the Northern Cross (in contrast to the Southern Cross). Cygnus was among the 48 constellations listed by the 2nd century astronomer Ptolemy, and it remains one of the 88 modern constellations.Cygnus contains Deneb, one of the brightest stars in the night sky and one corner of the Summer Triangle, as well as some notable X-ray sources and the giant stellar association of Cygnus OB2. One of the stars of this association, NML Cygni, is one of the largest stars currently known. The constellation is also home to Cygnus X-1, a distant X-ray binary containing a supergiant and unseen massive companion that was the first object widely held to be a black hole. Many star systems in Cygnus have known planets as a result of the Kepler Mission observing one patch of the sky, the patch is the area around Cygnus. In addition, most of the eastern part of Cygnus is dominated by the Hercules–Corona Borealis Great Wall, a giant galaxy filament that is the largest known structure in the observable universe; covering most of the northern sky.