Standard EPS Shell Presentation
... Explain the factors that determine the brightness of a star in the sky. Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is r ...
... Explain the factors that determine the brightness of a star in the sky. Discuss the importance of the H-R diagram to astronomers. Explain the relationship between mass and the life cycle of a star. Describe the phases in the life cycle of a sun-like star. Discuss how the death of a massive star is r ...
Milky Way - Wayne Hu`s Tutorials
... • Angular positions of stars (as a function of season, time) • Relative radial velocity from Doppler effect ...
... • Angular positions of stars (as a function of season, time) • Relative radial velocity from Doppler effect ...
Study Guide 4 Part A Outline
... o The Hubble Law implies Universe is expanding The expansion started at some definite time in the past (the Big Bang)Universe expands away from every galaxy. Every galaxy would see its own version of the Hubble Law. Quasars & Active Galactic Nuclei o Quasars and other active galaxies emit large ...
... o The Hubble Law implies Universe is expanding The expansion started at some definite time in the past (the Big Bang)Universe expands away from every galaxy. Every galaxy would see its own version of the Hubble Law. Quasars & Active Galactic Nuclei o Quasars and other active galaxies emit large ...
Star Constellations
... The stars that make up a constellation appear close to each other from Earth. In reality, they may be very distant from one another. Constellations were important to people, like the Ancient Greeks. People who spent a lot of time outdoors at night, like shepherds, named the constellations. They told ...
... The stars that make up a constellation appear close to each other from Earth. In reality, they may be very distant from one another. Constellations were important to people, like the Ancient Greeks. People who spent a lot of time outdoors at night, like shepherds, named the constellations. They told ...
A Star is
... The Sizes and Masses of Stars • Stars vary in size and mass, and a star’s brightness is related to its size • Big stars appear brighter than smaller stars of the same temperature • Our sun is considered a medium-sized star • Most stars visible from Earth are medium-sized stars. • Many stars also ha ...
... The Sizes and Masses of Stars • Stars vary in size and mass, and a star’s brightness is related to its size • Big stars appear brighter than smaller stars of the same temperature • Our sun is considered a medium-sized star • Most stars visible from Earth are medium-sized stars. • Many stars also ha ...
Famous Constellations
... Ursa Major is also famous and very important because it points to North Star Ursa Major means Big Bear in Latin http://3.bp.blogspot.com/-4XaNePY2HfQ/TaqkEJZbnjI/AAAAAAAAAs8/nIsCHpLt4Q/s1600/Ursa-Major.jpg • The Big Dipper is part of Ursa Major and helps point to Polaris because easy to find in sky ...
... Ursa Major is also famous and very important because it points to North Star Ursa Major means Big Bear in Latin http://3.bp.blogspot.com/-4XaNePY2HfQ/TaqkEJZbnjI/AAAAAAAAAs8/nIsCHpLt4Q/s1600/Ursa-Major.jpg • The Big Dipper is part of Ursa Major and helps point to Polaris because easy to find in sky ...
proper motion
... apparent magnitudes. A 1st magnitude star is brighter than a 2nd magnitude star, which is brighter than a 3rd magnitude star, etc. In the 19th century the magnitude scale was more precisely defined. If two stars have an apparent luminosity ratio of 100, they have apparent magnitudes that differ by e ...
... apparent magnitudes. A 1st magnitude star is brighter than a 2nd magnitude star, which is brighter than a 3rd magnitude star, etc. In the 19th century the magnitude scale was more precisely defined. If two stars have an apparent luminosity ratio of 100, they have apparent magnitudes that differ by e ...
Magnitudes lesson plan
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
... that he could see from his latitude into six classes of brightness. His idea of six classes probably came from the Babylonians whose base number was six. The formal introduction of six magnitudes has been credited to Ptolemy (100-150 A.D.) who was a Greek/Egyptian astronomer. He simply advanced the ...
The Magnitude Scale
... are not "exact", in that celestial objects are often measured to a precision or 0.1 or 0.01 magnitude; for example, Sirius shines at V = -1.47 (Yale Bright Star Catalogue), and the planet Venus varies in brightness generally from magnitude -4.5 to -3.7. Note that a comet of magnitude 5 will not be a ...
... are not "exact", in that celestial objects are often measured to a precision or 0.1 or 0.01 magnitude; for example, Sirius shines at V = -1.47 (Yale Bright Star Catalogue), and the planet Venus varies in brightness generally from magnitude -4.5 to -3.7. Note that a comet of magnitude 5 will not be a ...
Planisphere
... actually find something in the sky when we go outside. The altitude-azimuth coordinate system, called the horizon system, fulfills the opposite role: it tells us how to find something in the sky at a given time at a particular location. If somehow we could convert between these systems, we could loo ...
... actually find something in the sky when we go outside. The altitude-azimuth coordinate system, called the horizon system, fulfills the opposite role: it tells us how to find something in the sky at a given time at a particular location. If somehow we could convert between these systems, we could loo ...
Stars, Galaxies, and the Universe Section 3 Stars, Galaxies, and the
... fade in a regular pattern. Most Cepheids have regular cycles. The longer the cycle, the brighter the star’s absolute magnitude. • Scientists compare the Cepheid’s absolute magnitude and the Cepheid’s apparent magnitude to calculate the distance to the Cepheid variable. • This distance tells scientis ...
... fade in a regular pattern. Most Cepheids have regular cycles. The longer the cycle, the brighter the star’s absolute magnitude. • Scientists compare the Cepheid’s absolute magnitude and the Cepheid’s apparent magnitude to calculate the distance to the Cepheid variable. • This distance tells scientis ...
Star A
... in orbit around one another. The majority are found in binary-star systems, which consist of two stars in orbit about their common center of mass, held together by their mutual gravitational attraction. (The Sun is not part of a multiple-star system; if it has anything at all uncommon about it, it i ...
... in orbit around one another. The majority are found in binary-star systems, which consist of two stars in orbit about their common center of mass, held together by their mutual gravitational attraction. (The Sun is not part of a multiple-star system; if it has anything at all uncommon about it, it i ...
Images from the Las Cumbres Observatory Global Telescope
... cluster about 577 LY distant - one of the nearest and most populated open clusters to the solar system. It has an apparent mag. of 3.7, is visible to the naked eye and its estimated age is 600 M years. M44 contains at least 1000 stars: 63% are red dwarfs and 30% are Sun-like, classified as F, G and ...
... cluster about 577 LY distant - one of the nearest and most populated open clusters to the solar system. It has an apparent mag. of 3.7, is visible to the naked eye and its estimated age is 600 M years. M44 contains at least 1000 stars: 63% are red dwarfs and 30% are Sun-like, classified as F, G and ...
Astronomical Distance Determination
... Higher mass stars have lower density and higher luminosity. The lower density implies a longer period of variation. ...
... Higher mass stars have lower density and higher luminosity. The lower density implies a longer period of variation. ...
Double Stars in Scorpio`s Claws
... but you should be able to see two dim red stars that form a line with brighter ρ Scorpii between them. ...
... but you should be able to see two dim red stars that form a line with brighter ρ Scorpii between them. ...
How Far To That Star?
... to find the distance to more distant stars and even other galaxies It uses the Inverse Square Law. ...
... to find the distance to more distant stars and even other galaxies It uses the Inverse Square Law. ...
Astrophysics Outline—Option E
... E.1.2 Distinguish between a stellar cluster and a constellation. E.1.3 Define the light year. E.1.4 Compare the relative distances between stars within a galaxy and between galaxies, in terms of order of magnitude. E.1.5 Describe the apparent motion of the stars/constellations over a period of a nig ...
... E.1.2 Distinguish between a stellar cluster and a constellation. E.1.3 Define the light year. E.1.4 Compare the relative distances between stars within a galaxy and between galaxies, in terms of order of magnitude. E.1.5 Describe the apparent motion of the stars/constellations over a period of a nig ...
The colour-magnitude diagram
... Spectral types and colours Different effective temperatures correspond to: • different spectral types • different colours ...
... Spectral types and colours Different effective temperatures correspond to: • different spectral types • different colours ...
Reach for the Stars – Div. B
... from the nebula’s extended clouds of gas and dust. Located 22 000 light-years away from the Sun, it is the closest region of this kind known in our galaxy, providing astronomers with a local test bed for studying the intense star formation processes, very common in other galaxies, but hard to observ ...
... from the nebula’s extended clouds of gas and dust. Located 22 000 light-years away from the Sun, it is the closest region of this kind known in our galaxy, providing astronomers with a local test bed for studying the intense star formation processes, very common in other galaxies, but hard to observ ...
SW - Calculating Magnitudes
... We have seen how apparent magnitude describes how bright an object is to an observer and why the apparent brightness of a star varies in relation to its distance from Earth. However, in order to determine how bright an object is relative to other objects in the Universe, we must account for the obje ...
... We have seen how apparent magnitude describes how bright an object is to an observer and why the apparent brightness of a star varies in relation to its distance from Earth. However, in order to determine how bright an object is relative to other objects in the Universe, we must account for the obje ...
Topic Outline - Physics Rocks!
... Solve problems involving stellar parallax. Absolute and apparent magnitudes E.3.5 Describe the apparent magnitude scale E.3.4 ...
... Solve problems involving stellar parallax. Absolute and apparent magnitudes E.3.5 Describe the apparent magnitude scale E.3.4 ...
THREE INTRIGUER NEBULAE IN CONSTELLATION CARINA
... the range of an 8-inch telescope, getting conclusions and saving observations for other observers or for future new observations of this target. The inconspicuous constellation Antlia, visible during the autumn months in the southern hemisphere and composed of stars with magnitudes between 4.3 and 4 ...
... the range of an 8-inch telescope, getting conclusions and saving observations for other observers or for future new observations of this target. The inconspicuous constellation Antlia, visible during the autumn months in the southern hemisphere and composed of stars with magnitudes between 4.3 and 4 ...
THE LIFE CYCLES OF STARS (3)
... We shall need to understand how we measure the brightness of stars, their colour and distance. STELLAR MAGNITUDE SYSTEM The ancient Babylonians 1800 BC put together the first star catalogues. The Greek Hipparchus (180-125 BC) and later Claudius Ptolemy in Alexandria about 150 AD classified stars acc ...
... We shall need to understand how we measure the brightness of stars, their colour and distance. STELLAR MAGNITUDE SYSTEM The ancient Babylonians 1800 BC put together the first star catalogues. The Greek Hipparchus (180-125 BC) and later Claudius Ptolemy in Alexandria about 150 AD classified stars acc ...
Chapter 10 Measuring the Stars: Giants, Dwarfs, and the Main
... * Some stars are supergiants and are also located near the top right (_______________) * White dwarfs are hot, faint, small stars near the bottom of the diagram • Some white dwarfs are Earth sized * Bright and near stars plotted on diagram Extending the Cosmic Distance Scale * Spectroscopic Parallax ...
... * Some stars are supergiants and are also located near the top right (_______________) * White dwarfs are hot, faint, small stars near the bottom of the diagram • Some white dwarfs are Earth sized * Bright and near stars plotted on diagram Extending the Cosmic Distance Scale * Spectroscopic Parallax ...
Aries (constellation)
Aries is one of the constellations of the zodiac. It is located in the northern celestial hemisphere between Pisces to the west and Taurus to the east. The name Aries is Latin for ram, and its symbol is 20px (Unicode ♈), representing a ram's horns. It is one of the 48 constellations described by the 2nd century astronomer Ptolemy, and remains one of the 88 modern constellations. It is a mid-sized constellation, ranking 39th overall size, with an area of 441 square degrees (1.1% of the celestial sphere).Although Aries came to represent specifically the ram whose fleece became the Golden Fleece of Ancient Greek mythology, it has represented a ram since late Babylonian times. Before that, the stars of Aries formed a farmhand. Different cultures have incorporated the stars of Aries into different constellations including twin inspectors in China and a porpoise in the Marshall Islands. Aries is a relatively dim constellation, possessing only four bright stars: Hamal (Alpha Arietis, second magnitude), Sheratan (Beta Arietis, third magnitude), Mesarthim (Gamma Arietis, fourth magnitude), and 41 Arietis (also fourth magnitude). The few deep-sky objects within the constellation are quite faint and include several pairs of interacting galaxies. Several meteor showers appear to radiate from Aries, including the Daytime Arietids and the Epsilon Arietids.