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October 2014 - Newbury Astronomical Society
... Stars were originally classified in groups designated by a letter in sequence from ‘A’ through the alphabet. The original sequence was defined by the apparent age of the star. Later this sequence was found to be wrong. However the class letters for each kind of star were retained but now they are no ...
... Stars were originally classified in groups designated by a letter in sequence from ‘A’ through the alphabet. The original sequence was defined by the apparent age of the star. Later this sequence was found to be wrong. However the class letters for each kind of star were retained but now they are no ...
Module code: AA1
... 1. Difference between the 2 groups of the stars 90% of the nearest stars can be found on the main sequence. The 2 exceptions are Sirius B and Procyon B which are situated in the area of the white dwarfs. 35% of the brightest stars can be found on the main sequence. 8 are giants (e.g. Arcturus) and 5 ...
... 1. Difference between the 2 groups of the stars 90% of the nearest stars can be found on the main sequence. The 2 exceptions are Sirius B and Procyon B which are situated in the area of the white dwarfs. 35% of the brightest stars can be found on the main sequence. 8 are giants (e.g. Arcturus) and 5 ...
Document
... We can then make up a chart listing the absolute magnitude for all these stars and everything else we know about them, including spectral type. ...
... We can then make up a chart listing the absolute magnitude for all these stars and everything else we know about them, including spectral type. ...
The Southern Fall PDF - Treasures of the Southern Sky
... giant star, which is in striking contrast to the multitude of brilliant blue stars. The cluster was discovered by the Abbé de Lacaille during his visit to South Africa in 1751–2. It is 8500 light-years away, and the component stars are all very young. The cluster is rather more compact than the Jewe ...
... giant star, which is in striking contrast to the multitude of brilliant blue stars. The cluster was discovered by the Abbé de Lacaille during his visit to South Africa in 1751–2. It is 8500 light-years away, and the component stars are all very young. The cluster is rather more compact than the Jewe ...
Unit 1
... A star’s location on the HR diagram is given by its temperature (x-axis) and luminosity (y-axis) We see that many stars are located on a diagonal line running from cool, dim stars to hot bright stars ...
... A star’s location on the HR diagram is given by its temperature (x-axis) and luminosity (y-axis) We see that many stars are located on a diagonal line running from cool, dim stars to hot bright stars ...
ABSOLUTE AND APPARENT MAGNITUDES
... To do this, you first need to know what magnitudes are. The Magnitude scale is basically the way that astronomers quantify the brightness of stars and other objects (including planets, asteroids, spacecraft etc) that they see in the sky. Magnitudes for stars range in practise from about -10 to +17, ...
... To do this, you first need to know what magnitudes are. The Magnitude scale is basically the way that astronomers quantify the brightness of stars and other objects (including planets, asteroids, spacecraft etc) that they see in the sky. Magnitudes for stars range in practise from about -10 to +17, ...
01-Star Atlas Project - Mapping the Heavens
... 2). Right ascension on the equatorial maps increases to the left, so left is east and right is west. Contrast this to a map of the Earth where east and west are right and left. The difference comes from looking at the Earth from the outside, not from the inside as we do the celestial sphere. Since l ...
... 2). Right ascension on the equatorial maps increases to the left, so left is east and right is west. Contrast this to a map of the Earth where east and west are right and left. The difference comes from looking at the Earth from the outside, not from the inside as we do the celestial sphere. Since l ...
Study Island
... hypothesizes that the rose bushes are not receiving enough water because he is now in a dry climate. He waters them more often, but they do not improve. Which of the following scientific questions should he ask next to find out what is wrong with his roses? A. Which rose bush has larger, more colorf ...
... hypothesizes that the rose bushes are not receiving enough water because he is now in a dry climate. He waters them more often, but they do not improve. Which of the following scientific questions should he ask next to find out what is wrong with his roses? A. Which rose bush has larger, more colorf ...
The Milky Way - Houston Community College System
... difficult. To discover the properties of stars, astronomers have used their telescopes and spectrographs in clever ways to learn the secrets hidden in starlight. The result is a family portrait of the stars. In this chapter you will find answers to five important questions about stars: • How far awa ...
... difficult. To discover the properties of stars, astronomers have used their telescopes and spectrographs in clever ways to learn the secrets hidden in starlight. The result is a family portrait of the stars. In this chapter you will find answers to five important questions about stars: • How far awa ...
P2_5 The Apparent Magnitude of α Orionis Supernova
... It has been found that when α Orionis becomes a supernova, it will be visible during the day. However, it will appear as a bright star rather than illuminating the Earth in the same way as the sun or moon. The moon has a mean apparent magnitude of -12.74 [6], and gives just enough light to help see ...
... It has been found that when α Orionis becomes a supernova, it will be visible during the day. However, it will appear as a bright star rather than illuminating the Earth in the same way as the sun or moon. The moon has a mean apparent magnitude of -12.74 [6], and gives just enough light to help see ...
E3 – Stellar distances
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
... • At distances greater than Mpc, neither parallax nor spectroscopic parallax can be relied upon to measure the distance to a star. • When we observe another galaxy, all of the stars in that galaxy are approximately the same distance away from the earth. What we really need is a light source of known ...
second grade - Math/Science Nucleus
... We see objects in the night sky because they are either generating or reflecting light. While these objects also shine or reflect light during the day, we generally cannot see them because they are much dimmer than the bright light emitted by the nearby Sun. Most of the light we see at night comes f ...
... We see objects in the night sky because they are either generating or reflecting light. While these objects also shine or reflect light during the day, we generally cannot see them because they are much dimmer than the bright light emitted by the nearby Sun. Most of the light we see at night comes f ...
Small Wonders: Andromeda
... there - especially when you compare it to the two foreground stars that flank it. At mag 13.7, it's a somewhat dim target tho, so the more aperture you can throw at this, the better your chances of finding it. It's certainly doable in a 10" scope from a decent site, and more than likely is catchable ...
... there - especially when you compare it to the two foreground stars that flank it. At mag 13.7, it's a somewhat dim target tho, so the more aperture you can throw at this, the better your chances of finding it. It's certainly doable in a 10" scope from a decent site, and more than likely is catchable ...
Celestial Navigation education kit: Student activities 1-6
... Pole on Earth, the South Celestial Pole would be directly overhead and the stars overhead would seem to be rotating clockwise around this point. In Melbourne, the South Celestial Pole is at an angle of (approximately) 38 degrees above the horizon – Melbourne’s latitude. From southern Australia, star ...
... Pole on Earth, the South Celestial Pole would be directly overhead and the stars overhead would seem to be rotating clockwise around this point. In Melbourne, the South Celestial Pole is at an angle of (approximately) 38 degrees above the horizon – Melbourne’s latitude. From southern Australia, star ...
PHY2083
... The magnitudes of standard stars are corrected for absorption by the Earth’s atmosphere. The magnitude of any object determined by comparison is therefore a measure of its flux at Earth. This is called the APPARENT MAGNITUDE (m) In order to make comparisons more meaningful, define a measure of intri ...
... The magnitudes of standard stars are corrected for absorption by the Earth’s atmosphere. The magnitude of any object determined by comparison is therefore a measure of its flux at Earth. This is called the APPARENT MAGNITUDE (m) In order to make comparisons more meaningful, define a measure of intri ...
Virtual HR Diagram Lab
... 3. Drag the active location around on the HR Diagram once again. This time focus on the Size Comparison panel. Check the appropriate region of the HR diagram corresponding to each description below. ...
... 3. Drag the active location around on the HR Diagram once again. This time focus on the Size Comparison panel. Check the appropriate region of the HR diagram corresponding to each description below. ...
After the ZAMS - Lincoln-Sudbury Regional High School
... formed from the same molecular cloud, and it was wellmixed. other If we didn’t make this assumption, we’d be unable to predict what will happen to one star in the cluster by looking at others in the same cluster that are further along in their development. ...
... formed from the same molecular cloud, and it was wellmixed. other If we didn’t make this assumption, we’d be unable to predict what will happen to one star in the cluster by looking at others in the same cluster that are further along in their development. ...
Multiple Choice, continued
... Dividing Up the Sky • constellation one of 88 regions into which the sky has been divided in order to describe the locations of celestial objects; a group of stars organized in a recognizable pattern • In 1930, astronomers around the world agreed upon a standard set of 88 constellations. • You can u ...
... Dividing Up the Sky • constellation one of 88 regions into which the sky has been divided in order to describe the locations of celestial objects; a group of stars organized in a recognizable pattern • In 1930, astronomers around the world agreed upon a standard set of 88 constellations. • You can u ...
Comet Lulin - indstate.edu
... Since Comet Lulin will be moving opposite the motion of the Earth, it will appear to approach us and move away especially fast. Beginning in February 2009, Comet Lulin will rise at about midnight local time, and will be about 6th or 7th magnitude. This won't be bright enough to go out and look at ...
... Since Comet Lulin will be moving opposite the motion of the Earth, it will appear to approach us and move away especially fast. Beginning in February 2009, Comet Lulin will rise at about midnight local time, and will be about 6th or 7th magnitude. This won't be bright enough to go out and look at ...
Stellarium01 Starter Part A B Doc - ASTR101
... Objects. Each of these is a distant object much bigger than a single star and (almost) permanently located at a certain spot in the sky, in a particular constellation. There are many catalogs of Deep Sky Objects, most of which were published in the 18th or 19th centuries, including the NGC catalog ( ...
... Objects. Each of these is a distant object much bigger than a single star and (almost) permanently located at a certain spot in the sky, in a particular constellation. There are many catalogs of Deep Sky Objects, most of which were published in the 18th or 19th centuries, including the NGC catalog ( ...
How do stars appear to move to an observer on the
... We can see about 6,000 stars with our eyes A good telescope will allow you to see about 3,000,000,000 (billion) stars The Hubble telescope can see about 1,000,000,000,000 (Trillion) stars Stars are broken into two different skills, how bright they appear from earth and the other measure is how ...
... We can see about 6,000 stars with our eyes A good telescope will allow you to see about 3,000,000,000 (billion) stars The Hubble telescope can see about 1,000,000,000,000 (Trillion) stars Stars are broken into two different skills, how bright they appear from earth and the other measure is how ...
Environmental Science
... alternate as the North Star every 13,000 years. Polaris: The Current North Star Today the Earth's axis points within one degree of Polaris, the brightest star in the constellation Ursa Minor (also called the Little Bear or the Little Dipper). Polaris appears to be in a fixed position in the sky thro ...
... alternate as the North Star every 13,000 years. Polaris: The Current North Star Today the Earth's axis points within one degree of Polaris, the brightest star in the constellation Ursa Minor (also called the Little Bear or the Little Dipper). Polaris appears to be in a fixed position in the sky thro ...
Precession of Earth
... alternate as the North Star every 13,000 years. Polaris: The Current North Star Today the Earth's axis points within one degree of Polaris, the brightest star in the constellation Ursa Minor (also called the Little Bear or the Little Dipper). Polaris appears to be in a fixed position in the sky thro ...
... alternate as the North Star every 13,000 years. Polaris: The Current North Star Today the Earth's axis points within one degree of Polaris, the brightest star in the constellation Ursa Minor (also called the Little Bear or the Little Dipper). Polaris appears to be in a fixed position in the sky thro ...
OUR COSMIC NEIGHBORS Story of the Stars
... HE BEST KNOWN group of stars in the Northern Hemisphere is Ursa Major, the Great Bear. It has seven stars, four of which form the bowl of a dipper, and the remaining three resemble a bent handle. This constellation is frequently called the “Big Dipper.” Near Mizar, the second star in the handle, we ...
... HE BEST KNOWN group of stars in the Northern Hemisphere is Ursa Major, the Great Bear. It has seven stars, four of which form the bowl of a dipper, and the remaining three resemble a bent handle. This constellation is frequently called the “Big Dipper.” Near Mizar, the second star in the handle, we ...
Crux
![](https://commons.wikimedia.org/wiki/Special:FilePath/Southern_Celestial_Map_of_Mestre_João_Faras.gif?width=300)
Crux /ˈkrʌks/, located in the deep southern sky, is the smallest yet one of the most distinctive of the 88 modern constellations. Its name is Latin for cross, and it is dominated by a cross-shaped asterism that is commonly known as the Southern Cross. Although visible to the Ancient Greeks, it was seen as part of the constellation Centaurus, and not defined or accurately mapped till the 16th century.Known as Acrux, blue-white Alpha Crucis is the constellation's brightest star and the bottom star of the cross. Nearly as bright are Beta and Gamma, while Delta and Epsilon make up the asterism. Many of the constellation's brighter stars are members of the Scorpius–Centaurus Association, a loose group of hot blue-white stars that appear to share a common origin and motion across the Milky Way. Two star systems have been found to have planets. The constellation also contains four Cepheid variables visible to the naked eye under optimum conditions. Crux also contains the Jewel Box, a bright open cluster, and the Coalsack Nebula, the most prominent dark nebula in the sky.