Stars
... toward each other by gravity • Many stars orbit each other • More than 50% of stars occur in pairs or multiples. • Binary stars are used to determine the star property most difficult to calculate – It’s mass ...
... toward each other by gravity • Many stars orbit each other • More than 50% of stars occur in pairs or multiples. • Binary stars are used to determine the star property most difficult to calculate – It’s mass ...
Review of the Principles of Stellar Parallax and Practice Problems
... Practice Problem 3: Star 1 has an absolute magnitude of 0. How many times more luminous is star 1 compared to the Sun? Note: the absolute magnitude of the Sun is +4.8. ...
... Practice Problem 3: Star 1 has an absolute magnitude of 0. How many times more luminous is star 1 compared to the Sun? Note: the absolute magnitude of the Sun is +4.8. ...
Scorpius: The Scorpion Σκορπιος Amber Perrine Physics 1040 MWF
... As told in another story, Orion was out in the woods one day when he caught sight of seven beautiful sisters, the daughters of Atlas and Pleione. Orion immediately fell in love with all seven sisters and began to pursue them. However, the sisters were terrified of him and cried out to Zeus to save ...
... As told in another story, Orion was out in the woods one day when he caught sight of seven beautiful sisters, the daughters of Atlas and Pleione. Orion immediately fell in love with all seven sisters and began to pursue them. However, the sisters were terrified of him and cried out to Zeus to save ...
Grade Nine Planetarium script
... chased by Leo which rises when Orion is high in the sky. By 4 AM, when they are just finishing their home work, Orion will have set, and Leo will be high in the sky. The stars near the equator move about 1.5 fists across the sky per hour. Demonstrate by rotating the cylinder. As the earth revolves a ...
... chased by Leo which rises when Orion is high in the sky. By 4 AM, when they are just finishing their home work, Orion will have set, and Leo will be high in the sky. The stars near the equator move about 1.5 fists across the sky per hour. Demonstrate by rotating the cylinder. As the earth revolves a ...
Stellar Lives (continued). Galaxies.
... span ~30 light-years (10 pc). Pleiades Globular clusters can contain more than a million stars and span 60-150 light-years. ...
... span ~30 light-years (10 pc). Pleiades Globular clusters can contain more than a million stars and span 60-150 light-years. ...
stars and beyond - Math/Science Nucleus
... A celestial globe shows the complete northern and southern hemispheres and the main stars of each hemisphere. It is divided into 88 regions called constellations. The purple band that runs around the globe is the Milky Way Galaxy. The dotted line within this band is the galactic equator. There is a ...
... A celestial globe shows the complete northern and southern hemispheres and the main stars of each hemisphere. It is divided into 88 regions called constellations. The purple band that runs around the globe is the Milky Way Galaxy. The dotted line within this band is the galactic equator. There is a ...
Star luminosity info and HR diagram
... Are a star’s brightness and luminosity the same thing? A star’s luminosity is its true brightness. Nearly every star you see with the unaided eye is more luminous than our sun. The ancient astronomers believed the stars were attached to a gigantic crystal sphere surrounding Earth. In that scenario, ...
... Are a star’s brightness and luminosity the same thing? A star’s luminosity is its true brightness. Nearly every star you see with the unaided eye is more luminous than our sun. The ancient astronomers believed the stars were attached to a gigantic crystal sphere surrounding Earth. In that scenario, ...
Document
... Globular Clusters • Dense clusters of 50,000 – 1 million stars • Old (~ 11 billion years), lower-mainsequence stars • Approx. 200 globular clusters in our Milky Way Globular Cluster M80 ...
... Globular Clusters • Dense clusters of 50,000 – 1 million stars • Old (~ 11 billion years), lower-mainsequence stars • Approx. 200 globular clusters in our Milky Way Globular Cluster M80 ...
Measuring the Properties of Stars - Sierra College Astronomy Home
... The sizes of a few very large stars have been measured directly by interferometry. Knowing the temperature of a star gives its energy emitted per square meter. Knowing the total energy emitted (from the absolute magnitude) one can then calculate the surface area of the star. From that the di ...
... The sizes of a few very large stars have been measured directly by interferometry. Knowing the temperature of a star gives its energy emitted per square meter. Knowing the total energy emitted (from the absolute magnitude) one can then calculate the surface area of the star. From that the di ...
Set 2: Nature of Galaxies
... Great Shapley-Curtis Debate • History: as late as the early 1920’s it was not known that the “spiral nebula” were galaxies like ours • Debate between Shapley (galactic objects) and Curtis (extragalactic, or galaxies) in 1920 highlighted the difficulties distances in astrophysics difficult to measur ...
... Great Shapley-Curtis Debate • History: as late as the early 1920’s it was not known that the “spiral nebula” were galaxies like ours • Debate between Shapley (galactic objects) and Curtis (extragalactic, or galaxies) in 1920 highlighted the difficulties distances in astrophysics difficult to measur ...
The Celestial Sphere
... For the purposes of navigation, we have to assume that the earth is the centre of the universe and that the sun, the moon, the planets and all the stars are situated around the earth equidistantly, making up a large sphere surrounding the earth and known as the celestial sphere. The points on the ce ...
... For the purposes of navigation, we have to assume that the earth is the centre of the universe and that the sun, the moon, the planets and all the stars are situated around the earth equidistantly, making up a large sphere surrounding the earth and known as the celestial sphere. The points on the ce ...
Galaxies - senwiki
... Elliptical galaxies are, simply: -galaxies with an elliptical shape Their shapes range from almost spherical to footballshaped, to long and cylindrical (like a pencil) -The largest galaxies in the universe are elliptical -Contain very little dust-they have fewer young stars than spiral galaxies. Ell ...
... Elliptical galaxies are, simply: -galaxies with an elliptical shape Their shapes range from almost spherical to footballshaped, to long and cylindrical (like a pencil) -The largest galaxies in the universe are elliptical -Contain very little dust-they have fewer young stars than spiral galaxies. Ell ...
Lecture Ten - The Sun Amongst the Stars Part II
... O-type stars have very few lines because they are so hot that most of their elements have been stripped of electrons – while in cooler, M-type stars, far more atoms retain their electrons. Patterns of absorption lines can reveal the temperatures of the stars to a precision within 50 degrees K – a f ...
... O-type stars have very few lines because they are so hot that most of their elements have been stripped of electrons – while in cooler, M-type stars, far more atoms retain their electrons. Patterns of absorption lines can reveal the temperatures of the stars to a precision within 50 degrees K – a f ...
CONSTELLATIONS
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
... Autumnal Equinox / September 21 THE PLANETS As you have seen, the dashed line on the planisphere marks the ecliptic. As our Earth moves around in its orbit, the Sun, the Moon, and the planets also appear along this line. The ecliptic therefore represents the plane of the solar system. Of the nine pl ...
Document
... • Certain stars that have used up their main supply of hydrogen fuel are unstable and pulsate. • RR Lyrae variables have periods of about a day. Their brightness doubles from dimest to brightest. • Typical light curve for a Cepheid variable star. • Cepheid variables have longer periods, from one day ...
... • Certain stars that have used up their main supply of hydrogen fuel are unstable and pulsate. • RR Lyrae variables have periods of about a day. Their brightness doubles from dimest to brightest. • Typical light curve for a Cepheid variable star. • Cepheid variables have longer periods, from one day ...
SkyWatcher - Boise Astronomical Society
... that comets are more dynamic than anyone realized. The missions found that dust and gas burst from a comet's nucleus every few days or weeks—fleeting phenomena that would have gone unnoticed if it weren't for the constant and nearby observations. But space missions are expensive, so for three upcomi ...
... that comets are more dynamic than anyone realized. The missions found that dust and gas burst from a comet's nucleus every few days or weeks—fleeting phenomena that would have gone unnoticed if it weren't for the constant and nearby observations. But space missions are expensive, so for three upcomi ...
chapter 26 instructor notes
... While the Eggen, Lynden-Bell, and Sandage mechanism has been proposed for the formation of disk galaxies like spirals and lenticulars, the formation of ellipticals has generally been considered to have been a faster process in which star formation was extremely efficient, leaving nothing for the cre ...
... While the Eggen, Lynden-Bell, and Sandage mechanism has been proposed for the formation of disk galaxies like spirals and lenticulars, the formation of ellipticals has generally been considered to have been a faster process in which star formation was extremely efficient, leaving nothing for the cre ...
October 2012 - astronomy for beginners
... The night sky is still dominated by the Summer Triangle. To see the Summer Triangle find a dark location away from any lights that will reduce your night vision and look towards the south. Almost overhead is Deneb the brightest star in the constellation of Cygnus (the Swan). Look towards the west (r ...
... The night sky is still dominated by the Summer Triangle. To see the Summer Triangle find a dark location away from any lights that will reduce your night vision and look towards the south. Almost overhead is Deneb the brightest star in the constellation of Cygnus (the Swan). Look towards the west (r ...
quick guide - Shamanic Astrology Mystery School
... the essence of leadership and learning to be creator The patterning of the organic world and of soul, to discover and then dedicate self to the "sacred work," brings spirit into matter to honor it Partnership and relationship to discover non-hierarchical conscious equal partnership, the balance betw ...
... the essence of leadership and learning to be creator The patterning of the organic world and of soul, to discover and then dedicate self to the "sacred work," brings spirit into matter to honor it Partnership and relationship to discover non-hierarchical conscious equal partnership, the balance betw ...
Astronomy Unit 4 Galaxies
... 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called __________________. 38. Galaxies that are brighter than normal are called __________________________ and emit mos ...
... 37. The distribution of galaxies in the universe is not ___________________, but clusters of galaxies lie within structures called ___________________ which surround empty regions called __________________. 38. Galaxies that are brighter than normal are called __________________________ and emit mos ...
Measuring Stars
... close, or one star is so much brighter than the other that we cannot distinguish the two stars visually. But still we can infer that the system is binary by several indirect methods. – Eclipsing binaries: In some binary systems orbital plane of the stars is oriented edgewise toward earth. So that on ...
... close, or one star is so much brighter than the other that we cannot distinguish the two stars visually. But still we can infer that the system is binary by several indirect methods. – Eclipsing binaries: In some binary systems orbital plane of the stars is oriented edgewise toward earth. So that on ...
Spectral Classification
... B stars are extremely luminous and blue. As O and B stars are so powerful, they live for a very short time. They do not stray far from the area in which they were formed as they don't have the time. They therefore tend to cluster together in what we call OB1 associations. and contains all of the con ...
... B stars are extremely luminous and blue. As O and B stars are so powerful, they live for a very short time. They do not stray far from the area in which they were formed as they don't have the time. They therefore tend to cluster together in what we call OB1 associations. and contains all of the con ...
MSci Astrophysics 210PHY412 - Queen's University Belfast
... star if it were placed at a distance of 10 pc m – M = 5 log(d/10) - 5 where d is in pc (note: log10 ) • Magnitudes are measured in some wavelength band e.g. UBV. To compare with theory it is more useful to determine bolometric magnitude – defined as absolute magnitude that would be measured by a bol ...
... star if it were placed at a distance of 10 pc m – M = 5 log(d/10) - 5 where d is in pc (note: log10 ) • Magnitudes are measured in some wavelength band e.g. UBV. To compare with theory it is more useful to determine bolometric magnitude – defined as absolute magnitude that would be measured by a bol ...
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.