Eyeing the retina nebula
... the outer layers are ejected to form an expanding cloud of dust and gas. Intense radiation from the collapsed star ionizes the surrounding gases, producing the glowing colors. IC4406, nicknamed the Retina Nebula, is one of the closest planetary nebulae to Earth. The Hubble Space Telescope image prov ...
... the outer layers are ejected to form an expanding cloud of dust and gas. Intense radiation from the collapsed star ionizes the surrounding gases, producing the glowing colors. IC4406, nicknamed the Retina Nebula, is one of the closest planetary nebulae to Earth. The Hubble Space Telescope image prov ...
Lesson 6 - Magnitudes of Stars
... Luminosity - How much energy a star puts out per second Absolute Magnitude - How bright a star would look if it was 10 parsecs away ...
... Luminosity - How much energy a star puts out per second Absolute Magnitude - How bright a star would look if it was 10 parsecs away ...
Astrophysics
... Eruptive activity in the solar corona is known to produce large-scale waves, shocks and coronal mass ejections (CMEs). This kind of activity is often associated with the in-situ detection of solar energetic particles (SEPs). However, the exact mechanism by which eruptions in the corona produces SEPs ...
... Eruptive activity in the solar corona is known to produce large-scale waves, shocks and coronal mass ejections (CMEs). This kind of activity is often associated with the in-situ detection of solar energetic particles (SEPs). However, the exact mechanism by which eruptions in the corona produces SEPs ...
Measuring colour in astronomy
... Many of the galaxies imaged by SDSS are too far away to make out individual features, so one has to measure the spectrum and colour of a whole galaxy. Since the light from a galaxy is just the sum of all the light from the individual stars of which it is made, its spectrum – and hence its colour – i ...
... Many of the galaxies imaged by SDSS are too far away to make out individual features, so one has to measure the spectrum and colour of a whole galaxy. Since the light from a galaxy is just the sum of all the light from the individual stars of which it is made, its spectrum – and hence its colour – i ...
Earth Space EOC Review Test #2 NAME
... Scientist have predicted that 50% of the wetlands worldwide have become destroyed. This can be attributed mostly to human destruction, such as deforestation and urbanization. Wetlands are vital for amphibians, which include frogs, salamanders, and newts. The females lay their eggs in depressions in ...
... Scientist have predicted that 50% of the wetlands worldwide have become destroyed. This can be attributed mostly to human destruction, such as deforestation and urbanization. Wetlands are vital for amphibians, which include frogs, salamanders, and newts. The females lay their eggs in depressions in ...
How far away are the Stars?
... • If distance to an object is known, we can measure its size. Diameter 2 Dis tan ce ...
... • If distance to an object is known, we can measure its size. Diameter 2 Dis tan ce ...
Highlights of the Month - Bridgend Astronomical Society
... lie within its boundaries. Spica is, in fact, an exceedingly close double star with the two B type stars orbiting each other every 4 days. Their total luminosity is 2000 times that of our Sun. In the upper right hand quadrant of Virgo lies the centre of the Virgo Cluster of galaxies. There are 13 ga ...
... lie within its boundaries. Spica is, in fact, an exceedingly close double star with the two B type stars orbiting each other every 4 days. Their total luminosity is 2000 times that of our Sun. In the upper right hand quadrant of Virgo lies the centre of the Virgo Cluster of galaxies. There are 13 ga ...
Stellar Spectra
... Hydrogen is the most common element in the universe – makes up most (75% by mass) of the material in a star. The dark lines in the visible light part of the hydrogen spectrum are created by electrons jumping from the 2nd orbit out from the nucleus to higher orbits. ...
... Hydrogen is the most common element in the universe – makes up most (75% by mass) of the material in a star. The dark lines in the visible light part of the hydrogen spectrum are created by electrons jumping from the 2nd orbit out from the nucleus to higher orbits. ...
Collapse: Method 2
... temperatures of 10,000 K, thermal pressure brakes the collapse. This brings a second and final protostellar core into existence. The mass of this core may only be one per cent of the final stellar mass. Stage 8. The first shock from Stage 5 disappears while a second inner shock now mediates the accr ...
... temperatures of 10,000 K, thermal pressure brakes the collapse. This brings a second and final protostellar core into existence. The mass of this core may only be one per cent of the final stellar mass. Stage 8. The first shock from Stage 5 disappears while a second inner shock now mediates the accr ...
The Night Sky September 2016 - Bridgend Astronomical Society
... times more than the Sun and is about 50 times brighter. It is thus burning up its nuclear fuel at a greater rate than the Sun and so will shine for a correspondingly shorter time. Vega is much younger than the Sun, perhaps only a few hundred million years old, and is surrounded by a cold, dark disc ...
... times more than the Sun and is about 50 times brighter. It is thus burning up its nuclear fuel at a greater rate than the Sun and so will shine for a correspondingly shorter time. Vega is much younger than the Sun, perhaps only a few hundred million years old, and is surrounded by a cold, dark disc ...
Slide 1
... To make this text bigger hold down the Ctrl key and turn the wheel on your mouse away from you at the same time. To me the solar system unit is the toughest unit to teach all year. Not because it is not interesting, not because I don’t understand the material, and certainly not because the kids don’ ...
... To make this text bigger hold down the Ctrl key and turn the wheel on your mouse away from you at the same time. To me the solar system unit is the toughest unit to teach all year. Not because it is not interesting, not because I don’t understand the material, and certainly not because the kids don’ ...
$doc.title
... Share and discuss your results with the rest of the class. Determine if your team’s answers are reasonable. ...
... Share and discuss your results with the rest of the class. Determine if your team’s answers are reasonable. ...
Name
... diagram represents a time-exposure photograph taken by aiming a camera at Polaris in the night sky and leaving the shutter open for a period of time to record star trails. The angular arcs (star trails) show the apparent motions of some stars. ...
... diagram represents a time-exposure photograph taken by aiming a camera at Polaris in the night sky and leaving the shutter open for a period of time to record star trails. The angular arcs (star trails) show the apparent motions of some stars. ...
THE LIFE CYCLES OF STARS (3)
... suppose we keep it the same size but raise its surface temperature until it goes through “white hot” to “blue hot”. Its colour will be blue so it will be on the left side of the diagram and its brightness will have increased somewhat above average since it is blue hot, so it will be above the middle ...
... suppose we keep it the same size but raise its surface temperature until it goes through “white hot” to “blue hot”. Its colour will be blue so it will be on the left side of the diagram and its brightness will have increased somewhat above average since it is blue hot, so it will be above the middle ...
Lecture 1
... counterclockwise from January of one year, through July, to January of the following year. Consider two stars (C and D) that both exhibit parallax. If Star C appears to move back and forth by a greater amount than Star D, which star do you think is actually closer to you? If you’re not sure, just ma ...
... counterclockwise from January of one year, through July, to January of the following year. Consider two stars (C and D) that both exhibit parallax. If Star C appears to move back and forth by a greater amount than Star D, which star do you think is actually closer to you? If you’re not sure, just ma ...
The Milky Way galaxy
... The Sun is found in the plane of the Galaxy. It moves on a nice circular orbit around the center of the Galaxy along with other stars formed in the plane. If a halo star is passing through the plane, it will have a large relative velocity with respect to the Sun. So this is one way to identify a s ...
... The Sun is found in the plane of the Galaxy. It moves on a nice circular orbit around the center of the Galaxy along with other stars formed in the plane. If a halo star is passing through the plane, it will have a large relative velocity with respect to the Sun. So this is one way to identify a s ...
Significance of the 27 August 2016 Venus Jupiter Conjunction A
... In one or possibly two time zones (GMT -4 and -5) the planets will appear to merge into a single star. The best places to see the conjunction as it appeared to the wise men will be from locations along the same latitude as Jerusalem and Susa (ancient capital of Persia). This will be along the 32nd p ...
... In one or possibly two time zones (GMT -4 and -5) the planets will appear to merge into a single star. The best places to see the conjunction as it appeared to the wise men will be from locations along the same latitude as Jerusalem and Susa (ancient capital of Persia). This will be along the 32nd p ...
Target Stars for Earth-like Planet Searches with the Terrestrial
... through low-resolution spectroscopy and other measurements. The high contrast ratio between a star and any nearby planet, the small angular scale required, and the possibility of dust emission masking the planet's signature, combine to make the overall TPF problem challenging. ...
... through low-resolution spectroscopy and other measurements. The high contrast ratio between a star and any nearby planet, the small angular scale required, and the possibility of dust emission masking the planet's signature, combine to make the overall TPF problem challenging. ...
1.2.43The stellar populations of the Milky Way
... main sequence stars burning hydrogen in their cores. The more massive stars that formed at the same time as the surviving low-mass ones have already left the main sequence and are now red giants or white dwarfs. For a long time it was thought that all Pop. II stars had much lower metallicities than ...
... main sequence stars burning hydrogen in their cores. The more massive stars that formed at the same time as the surviving low-mass ones have already left the main sequence and are now red giants or white dwarfs. For a long time it was thought that all Pop. II stars had much lower metallicities than ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.