Orbits in Spherical Potentials
... • Once we have solved for the gravitational potential (Poisson’s eq.) of a system we want to know: How do stars move in gravitational potentials? • Neglect stellar encounters • use smoothed potential due to system or galaxy as a whole ...
... • Once we have solved for the gravitational potential (Poisson’s eq.) of a system we want to know: How do stars move in gravitational potentials? • Neglect stellar encounters • use smoothed potential due to system or galaxy as a whole ...
Exercise 5
... Of interest to us are the apparently light vertical “lines” that appear at irregular intervals throughout each spectrum. These spectra are actually negatives — that is, most of the spectrum should be light-colored, and the lines should appear ...
... Of interest to us are the apparently light vertical “lines” that appear at irregular intervals throughout each spectrum. These spectra are actually negatives — that is, most of the spectrum should be light-colored, and the lines should appear ...
Kerboodle Gravity Questions673 KB
... The article below has been adapted from www.space.com. Surprising observations of a star swiftly orbiting the cloudy heart of the Milky Way Galaxy have verified with near certainty the existence of a central black hole, a theoretical object that still eludes direct detection. Astronomers watched the ...
... The article below has been adapted from www.space.com. Surprising observations of a star swiftly orbiting the cloudy heart of the Milky Way Galaxy have verified with near certainty the existence of a central black hole, a theoretical object that still eludes direct detection. Astronomers watched the ...
Additional Problems
... You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn’t so by calculating how much weaker gravity is 300 km above the Earth’s surface. ...
... You are explaining to friends why astronauts feel weightless orbiting in the space shuttle, and they respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn’t so by calculating how much weaker gravity is 300 km above the Earth’s surface. ...
GRAVITY FIELD IN EXTERNAL PARTS OF THE SOLAR SYSTEM
... move in the interstellar medium, but remain deep within the incidence of the Sun. According to (Oort, 1950) exist cloud around the Sun of comet nuclei, called the Oort cloud. This cloud is not available observations. But if it exists, the comet nucleus moving near the outskirts of the solar system. ...
... move in the interstellar medium, but remain deep within the incidence of the Sun. According to (Oort, 1950) exist cloud around the Sun of comet nuclei, called the Oort cloud. This cloud is not available observations. But if it exists, the comet nucleus moving near the outskirts of the solar system. ...
Objective or GLE: 6.1.A.a: Classify celestial bodies in the solar
... a small solid body known as a meteoroid that enters a planet's atmosphere from outer space and is raised to incandescence by the friction resulting from its rapid motion. Brilliant meteors, known as fireballs, occur singly and generally consist of a luminous head, followed by a comet like train of l ...
... a small solid body known as a meteoroid that enters a planet's atmosphere from outer space and is raised to incandescence by the friction resulting from its rapid motion. Brilliant meteors, known as fireballs, occur singly and generally consist of a luminous head, followed by a comet like train of l ...
SES4U ~ The Formation of Our Solar Systemstudentcopy
... First extrasolar planet confirmed announced in late 1995 by astronomers studying 51 Pegasi, a spectral type G2-3 V mainsequence star 42 light-years from Earth. High-resolution spectrograph found that the star's line-of-sight velocity changes by some 70 meters per second every 4.2 days (a doppler shi ...
... First extrasolar planet confirmed announced in late 1995 by astronomers studying 51 Pegasi, a spectral type G2-3 V mainsequence star 42 light-years from Earth. High-resolution spectrograph found that the star's line-of-sight velocity changes by some 70 meters per second every 4.2 days (a doppler shi ...
Orion- The Swordsman of the Sky - A Winter Constellation from the
... which require magnification to see them, such as the Horse Head Nebula. You have to imagine, and possibly take your finger to join the dots, but you can virtually see the shoulders of Orion. The left shoulder star (seen from our vantage point) is Betelgeuse. This is a red super giant star, which als ...
... which require magnification to see them, such as the Horse Head Nebula. You have to imagine, and possibly take your finger to join the dots, but you can virtually see the shoulders of Orion. The left shoulder star (seen from our vantage point) is Betelgeuse. This is a red super giant star, which als ...
SHOW ME THE MATH THE DOPPLER EFFECT The Doppler effect
... The Doppler effect is the effect that shifts the wavelengths of spectral features in objects that are moving toward or away from the observer. This particular section will focus on the analysis of light waves from objects moving toward or away from us, but sometimes it’s easiest to understand this e ...
... The Doppler effect is the effect that shifts the wavelengths of spectral features in objects that are moving toward or away from the observer. This particular section will focus on the analysis of light waves from objects moving toward or away from us, but sometimes it’s easiest to understand this e ...
The winter sky over Bosham
... Following at Orion's heels are his hunting dogs, the constellations Canis Major and Canis Minor. The larger of the dogs is dominated by the brilliant star Sirius, the ‘dog star’ which rises an hour or two after Orion and can be found by following the line of the three stars of the belt towards the h ...
... Following at Orion's heels are his hunting dogs, the constellations Canis Major and Canis Minor. The larger of the dogs is dominated by the brilliant star Sirius, the ‘dog star’ which rises an hour or two after Orion and can be found by following the line of the three stars of the belt towards the h ...
The Family of Stars
... • Astronomers do photometry well and can detect small, periodic changes in light level. Small telescopes can do this. • Need very close to edge-on systems, usually within a degree given planet sizes, separations, and geometry. • More than a thousand candidates here or coming (Kepler ...
... • Astronomers do photometry well and can detect small, periodic changes in light level. Small telescopes can do this. • Need very close to edge-on systems, usually within a degree given planet sizes, separations, and geometry. • More than a thousand candidates here or coming (Kepler ...
Astronomy
... that the Sun was at an angle of 6° south of the vertical at Alexandria at the same time that, at Syrene, 800 km south of Alexandria, the sun was observed to be exactly overhead. Based on these data, the circumference of the Earth in kilometers was measured to be 37,200 km or 23,250 miles, very close ...
... that the Sun was at an angle of 6° south of the vertical at Alexandria at the same time that, at Syrene, 800 km south of Alexandria, the sun was observed to be exactly overhead. Based on these data, the circumference of the Earth in kilometers was measured to be 37,200 km or 23,250 miles, very close ...
Orion - CSIC
... to a human figure is a chance alignment. Viewed from another angle, they would not look anything like a hunter. To illustrate this, we can make a three-dimensional model of Orion's stars in space. Materials: Large sturdy piece of cardboard (15" by 12") Ruler 7 cotton balls String Glue or tape Pin or ...
... to a human figure is a chance alignment. Viewed from another angle, they would not look anything like a hunter. To illustrate this, we can make a three-dimensional model of Orion's stars in space. Materials: Large sturdy piece of cardboard (15" by 12") Ruler 7 cotton balls String Glue or tape Pin or ...
1” “Sky-Notes” of the Open University Astronomy Club. October 2005
... reveals more and more detail although increasingly smaller areas of the galaxy fill the eyepiece. 8" telescopes should reveal NGC206 as a hazy patch. It is a large area of star formation. 12" scopes will reveal one or two of the globular clusters. NGC404 (11.9) lg. Located 6' NW of And. The 2nd ma ...
... reveals more and more detail although increasingly smaller areas of the galaxy fill the eyepiece. 8" telescopes should reveal NGC206 as a hazy patch. It is a large area of star formation. 12" scopes will reveal one or two of the globular clusters. NGC404 (11.9) lg. Located 6' NW of And. The 2nd ma ...
October 2013
... and is typical of areas where new stars can form. Between the Scorpion and the Centaur are the Altar, the Level and the Wolf, while to the east of the Milky Way stretches a great expanse of sky with relatively few bright stars, dominated by birds and 'water constellations'. In the south these includ ...
... and is typical of areas where new stars can form. Between the Scorpion and the Centaur are the Altar, the Level and the Wolf, while to the east of the Milky Way stretches a great expanse of sky with relatively few bright stars, dominated by birds and 'water constellations'. In the south these includ ...
ASTR100 (Spring 2008) Introduction to Astronomy Our Star
... The Sun releases energy by fusing four hydrogen nuclei into one helium nucleus in several steps. The sequence of steps is called the proton-proton ...
... The Sun releases energy by fusing four hydrogen nuclei into one helium nucleus in several steps. The sequence of steps is called the proton-proton ...
Geography
... find the Big Dipper. Draw a straight line between the two stars of the Big Dipper as shown, toward the Little Dipper. The North Star is located at the end of the handle of the Little Dipper. The Polestar is the brightest of the Little Dipper stars. ...
... find the Big Dipper. Draw a straight line between the two stars of the Big Dipper as shown, toward the Little Dipper. The North Star is located at the end of the handle of the Little Dipper. The Polestar is the brightest of the Little Dipper stars. ...
Measuring the Heavens: Parallax
... The distance L from the sun to earth is the radius of the earth’s orbit. The parallax angle is measured by sighting the star at different times of the year. We want to find the distance D to the star. A complete circle is 360°. The angle is a fraction of that. Likewise, the sun-earth distance L ...
... The distance L from the sun to earth is the radius of the earth’s orbit. The parallax angle is measured by sighting the star at different times of the year. We want to find the distance D to the star. A complete circle is 360°. The angle is a fraction of that. Likewise, the sun-earth distance L ...
STUDY GUIDE:
... The sun is a star! In fact, it is the closest star to earth, only 150 million kilometers (93 million miles) away. This may seem like a long way, but it’s still 250,000 times closer to us than the next closest star, which is Proxima Centauri. The sun is 4.6 billion years old and its light only takes ...
... The sun is a star! In fact, it is the closest star to earth, only 150 million kilometers (93 million miles) away. This may seem like a long way, but it’s still 250,000 times closer to us than the next closest star, which is Proxima Centauri. The sun is 4.6 billion years old and its light only takes ...
Introduction to Astronomy
... The weak nuclear force can change one type of subatomic particle into another in some situations such as radioactive decay, and the generation of energy in stars. The energy resulting from thermonuclear fusion is distributed in several ways: kinetic energy of 4He and the two "recycled" protons: 91% ...
... The weak nuclear force can change one type of subatomic particle into another in some situations such as radioactive decay, and the generation of energy in stars. The energy resulting from thermonuclear fusion is distributed in several ways: kinetic energy of 4He and the two "recycled" protons: 91% ...
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.