black hole
... This wobble may be caused by the combined gravitational pull of two planets with 67 and 98 day orbital periods. ...
... This wobble may be caused by the combined gravitational pull of two planets with 67 and 98 day orbital periods. ...
Solar System where_are_we
... Left is a picture of the real Milky Way taken by the satellite COBE. The disk and center region of our Galaxy are readily recognizable. This image makes the Milky Way appear much more galaxylike and less like the smudge of stars we see stretching across our night sky. It is possible to imagine what ...
... Left is a picture of the real Milky Way taken by the satellite COBE. The disk and center region of our Galaxy are readily recognizable. This image makes the Milky Way appear much more galaxylike and less like the smudge of stars we see stretching across our night sky. It is possible to imagine what ...
Ch. 20
... Its path across the H–R diagram is essentially a straight line – it stays at just about the same luminosity as it cools off. Eventually the star dies in a violent explosion called a supernova. ...
... Its path across the H–R diagram is essentially a straight line – it stays at just about the same luminosity as it cools off. Eventually the star dies in a violent explosion called a supernova. ...
Sections F and G
... objects are hotter than those around larger, less dense objects. Accretion discs around white dwarfs lead to optical emission (novae), while those around neutron stars (or black holes) result in X-ray emission (X-ray binaries). Novae A nova (short for stella nova, or new star) is a star which underg ...
... objects are hotter than those around larger, less dense objects. Accretion discs around white dwarfs lead to optical emission (novae), while those around neutron stars (or black holes) result in X-ray emission (X-ray binaries). Novae A nova (short for stella nova, or new star) is a star which underg ...
DTU_9e_ch13
... A pulsar is a rapidly rotating neutron star with a powerful magnetic field that makes it a source of periodic radio and other electromagnetic pulses. Energy pours out of the polar regions of the neutron star in intense beams that sweep across the sky. ...
... A pulsar is a rapidly rotating neutron star with a powerful magnetic field that makes it a source of periodic radio and other electromagnetic pulses. Energy pours out of the polar regions of the neutron star in intense beams that sweep across the sky. ...
Evolution of our Sun
... About how long does our star live as a main sequence star? Explain why a massive star only lives a short time? What elements are created in a sun-like star? What elements are created in a massive star? Evolution of the Sun – Part 2 Name and briefly describe the stages that our sun will go through as ...
... About how long does our star live as a main sequence star? Explain why a massive star only lives a short time? What elements are created in a sun-like star? What elements are created in a massive star? Evolution of the Sun – Part 2 Name and briefly describe the stages that our sun will go through as ...
Week 10
... Stars release THERMAL RADIATION: brightness of each piece of surface only depends on temperature ...
... Stars release THERMAL RADIATION: brightness of each piece of surface only depends on temperature ...
Lecture
... • First stage: all stars start fusing hydrogen (H) to make helium (He) • This stage is considered to be the longest stage in a star’s lifetime ( 90% of its total lifespan) • Second stage: Fusing of helium (He) to make carbon (C) • The life of some stars (like our Sun) stops after this stage, but ot ...
... • First stage: all stars start fusing hydrogen (H) to make helium (He) • This stage is considered to be the longest stage in a star’s lifetime ( 90% of its total lifespan) • Second stage: Fusing of helium (He) to make carbon (C) • The life of some stars (like our Sun) stops after this stage, but ot ...
Types of Planets and Stars
... Main Sequence Stars -- make up the majority of stars in the universe. Earth’s sun is a main sequence star. These stars vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten t ...
... Main Sequence Stars -- make up the majority of stars in the universe. Earth’s sun is a main sequence star. These stars vary in size, mass, and brightness, but they all convert hydrogen into helium, also known as nuclear fusion. While our sun will spend 10 billion on its main sequence, a star ten t ...
Summation Packet KEY
... Irregular- rarest type of galaxy, and includes all galaxies that are not elliptical or spiral. ...
... Irregular- rarest type of galaxy, and includes all galaxies that are not elliptical or spiral. ...
hwk08
... where is the mass density of the gas, protons plus electrons. Specify the function f ( , T ) and the numerical value of C in c.g.s. units. (This can be written in various equivalent ways; choose a very simple form.) (b) Roughly speaking, low-mass stars have central temperatures T 0 10 7 K, som ...
... where is the mass density of the gas, protons plus electrons. Specify the function f ( , T ) and the numerical value of C in c.g.s. units. (This can be written in various equivalent ways; choose a very simple form.) (b) Roughly speaking, low-mass stars have central temperatures T 0 10 7 K, som ...
Phys 214. Planets and Life
... supernova, widely seen on Earth beginning in the year 1006 AD; Earth was about 7200 light-years away. Egyptian astrologer left us a historical description of the supernova - the object was 2-1/2 to three times as large as the disc of Venus, and about one-quarter the brightness of the Moon. ...
... supernova, widely seen on Earth beginning in the year 1006 AD; Earth was about 7200 light-years away. Egyptian astrologer left us a historical description of the supernova - the object was 2-1/2 to three times as large as the disc of Venus, and about one-quarter the brightness of the Moon. ...
Media release - Lily Hibberd
... celestial bodies, the masculine/feminine division is projected onto the two planets that are the most visible in the night sky and the most similar to Earth. Our planet, the third from the Sun, is flanked by Venus, which is closer to our star and the only planet to have been given a feminine name, a ...
... celestial bodies, the masculine/feminine division is projected onto the two planets that are the most visible in the night sky and the most similar to Earth. Our planet, the third from the Sun, is flanked by Venus, which is closer to our star and the only planet to have been given a feminine name, a ...
Way Milky the MAPPING
... The difference is important: astronomers develop theories of star motions not only to analyze how the stars in the galaxy are moving but also to understand how our galaxy—and others like it— formed and evolved. The paper came out as the European Space Agency was preparing for the December launch of ...
... The difference is important: astronomers develop theories of star motions not only to analyze how the stars in the galaxy are moving but also to understand how our galaxy—and others like it— formed and evolved. The paper came out as the European Space Agency was preparing for the December launch of ...
Black Hole
... Chinese Observations In 185 AD, Chinese astronomers observed Appearance of a bright star in our Milky Way galaxy. It took almost eight months to fade away from the sky. It sparkled like a star in the sky. Today we know it was a `Supernova'. ...
... Chinese Observations In 185 AD, Chinese astronomers observed Appearance of a bright star in our Milky Way galaxy. It took almost eight months to fade away from the sky. It sparkled like a star in the sky. Today we know it was a `Supernova'. ...
Section 27.2
... White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and bright and some can be seen without a telescope. Can you locate blue giants on the H-R diagram? ...
... White dwarfs are hot and dim and cannot be seen without a telescope. Red giants are cool and bright and some can be seen without a telescope. Can you locate blue giants on the H-R diagram? ...
Eclipses, Distance, Parallax, Small Angle, and Magnitude (Professor
... – The sky darkens enough so that we can often see bright stars in the sky. – Animals become quiet – The Sun’s corona (and prominences if present) are observed – The diamond ring phenomena can occur. – Shadow fringes can be seen moving across the ground. ...
... – The sky darkens enough so that we can often see bright stars in the sky. – Animals become quiet – The Sun’s corona (and prominences if present) are observed – The diamond ring phenomena can occur. – Shadow fringes can be seen moving across the ground. ...
A New Variable Star in Perseus
... The secondary minima are shown in Figure 6 and Figure 7. Using this two minima, the duration of the flat part of the secondary minimum is determined as 583 minutes. ...
... The secondary minima are shown in Figure 6 and Figure 7. Using this two minima, the duration of the flat part of the secondary minimum is determined as 583 minutes. ...
pptx
... • During this reaction, a small amount of the matter in the original protons is transformed into energy. As a result, the mass of the 1 helium nucleus is slightly less than the mass of the original 4 protons. Einstein’s equation E=mc2 tells us how much energy is produced from the transformed matter. ...
... • During this reaction, a small amount of the matter in the original protons is transformed into energy. As a result, the mass of the 1 helium nucleus is slightly less than the mass of the original 4 protons. Einstein’s equation E=mc2 tells us how much energy is produced from the transformed matter. ...
Earth Science 25.2A : Stellar Evolution
... These stars end in a brilliant explosion called a supernova. During a supernova, a star becomes millions of times brighter than it’s prenova stage. If one of the stars nearest to Earth produced a supernova, it would be brighter than our sun. ...
... These stars end in a brilliant explosion called a supernova. During a supernova, a star becomes millions of times brighter than it’s prenova stage. If one of the stars nearest to Earth produced a supernova, it would be brighter than our sun. ...
Stars
... • From O M: 1. Stars decrease in temperature 2. Stars generally become less massive (smaller) ...
... • From O M: 1. Stars decrease in temperature 2. Stars generally become less massive (smaller) ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.