Distance Ladder
... •Typically 300 km/s or so How to to determine distances: is moving away from us at •Measure v using Doppler shift 2100 km/s? A) 1 Mly D) 484 Mly •Deduce the distance from: B) 10 Mly E) 4,840 Mly v = H0d C) 100 Mly F) 48,400 Mly ...
... •Typically 300 km/s or so How to to determine distances: is moving away from us at •Measure v using Doppler shift 2100 km/s? A) 1 Mly D) 484 Mly •Deduce the distance from: B) 10 Mly E) 4,840 Mly v = H0d C) 100 Mly F) 48,400 Mly ...
Bluffing your way in Astronomy: Taurus
... The Pleiades A glorious sight in the Autumn sky for naked eye and binocular observers our Sun’s surface with one square metre of Aldebaran, the bit of Sun would be a blindingly-bright yellow, while the bit of Aldebaran would be a noticeably dimmer orange. However since Aldebaran has a surface area a ...
... The Pleiades A glorious sight in the Autumn sky for naked eye and binocular observers our Sun’s surface with one square metre of Aldebaran, the bit of Sun would be a blindingly-bright yellow, while the bit of Aldebaran would be a noticeably dimmer orange. However since Aldebaran has a surface area a ...
supplemental educational materials PDF
... • The fall constellations include the zodiacal constellations of Aries, the Ram; Taurus, the Bull; and Pisces, the Fishes. Additionally, Andromeda, the daughter of Cepheus, and Perseus, the Hero, are visible in the autumn sky. • There are five constellations that are very close to the North Star. Th ...
... • The fall constellations include the zodiacal constellations of Aries, the Ram; Taurus, the Bull; and Pisces, the Fishes. Additionally, Andromeda, the daughter of Cepheus, and Perseus, the Hero, are visible in the autumn sky. • There are five constellations that are very close to the North Star. Th ...
Stellar Classification - Solar Physics and Space Weather
... • Rigel (in Orion) is a prominent B class blue supergiant • Their spectra have neutral helium and moderate hydrogen lines • As O and B stars are so powerful, they live for a very short time and tend to cluster together in OB1 associations, which are associated with giant molecular clouds • The Orion ...
... • Rigel (in Orion) is a prominent B class blue supergiant • Their spectra have neutral helium and moderate hydrogen lines • As O and B stars are so powerful, they live for a very short time and tend to cluster together in OB1 associations, which are associated with giant molecular clouds • The Orion ...
November News Letter - Boise Astronomical Society
... Mars is located low in the southwest during the early evening this month. It lies 0.6° north of the third-magnitude star Lambda Sagittarii (Kaus Borealis) on November 3 rd Also Mars will be westsouthwest of the bright globular cluster M22 and 5° east of M8, the Lagoon Nebula. It lies 7° south of the ...
... Mars is located low in the southwest during the early evening this month. It lies 0.6° north of the third-magnitude star Lambda Sagittarii (Kaus Borealis) on November 3 rd Also Mars will be westsouthwest of the bright globular cluster M22 and 5° east of M8, the Lagoon Nebula. It lies 7° south of the ...
Chapter 8: The Pennsylvanian Period in Alabama: Looking Up
... change. These changes are imperceptible over hundreds or thousands of years, but over 310 million years, the changes would be large enough to completely change the apparent position of every star. Fig. 8.6 shows the changes in the Big Dipper that have occurred and will occur. While the ancient Egyp ...
... change. These changes are imperceptible over hundreds or thousands of years, but over 310 million years, the changes would be large enough to completely change the apparent position of every star. Fig. 8.6 shows the changes in the Big Dipper that have occurred and will occur. While the ancient Egyp ...
The Pennsylvanian Period in Alabama: Looking Up Astronomy and
... center. This changes all relative positions and therefore patterns, like constellations, over long periods of time. The second reason we would not see Orion or the Big Dipper as we see them now is the relatively short life times of massive stars. A star like the Sun can shine steadily, and provide ...
... center. This changes all relative positions and therefore patterns, like constellations, over long periods of time. The second reason we would not see Orion or the Big Dipper as we see them now is the relatively short life times of massive stars. A star like the Sun can shine steadily, and provide ...
Constellation
... constellation has alpha in its name, because it’s the first letter of the Greek alphabet. The brightest star in the constellation Perseus is called Alpha Persei. The second brightest is Beta Persei. (Beta is the second letter in the Greek alphabet.) The star closest to the Sun is Alpha Centauri. Thi ...
... constellation has alpha in its name, because it’s the first letter of the Greek alphabet. The brightest star in the constellation Perseus is called Alpha Persei. The second brightest is Beta Persei. (Beta is the second letter in the Greek alphabet.) The star closest to the Sun is Alpha Centauri. Thi ...
STAR TYPES
... Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to ...
... Most stars, including the sun, are "main sequence stars," fueled by nuclear fusion converting hydrogen into helium. For these stars, the hotter they are, the brighter. These stars are in the most stable part of their existence; this stage generally lasts for about 5 billion years. As stars begin to ...
Fulltext PDF - Indian Academy of Sciences
... of eclipse. The spectral variations also have been recorded. The well established techniques help us to estimate the masses of the components as 1.1 M0 and about 0.6 M 0 . This, combined with other information, will give a clue on the nature of the smaller companion - it has to be a compact object. ...
... of eclipse. The spectral variations also have been recorded. The well established techniques help us to estimate the masses of the components as 1.1 M0 and about 0.6 M 0 . This, combined with other information, will give a clue on the nature of the smaller companion - it has to be a compact object. ...
description
... The stars & constellations you see at night will change position from season to season as the Earth orbits the Sun. The stars will be in a different location (west of) as it was the previous night at the same exact time. Which stars & constellations you see depends on your latitude on Earth. People ...
... The stars & constellations you see at night will change position from season to season as the Earth orbits the Sun. The stars will be in a different location (west of) as it was the previous night at the same exact time. Which stars & constellations you see depends on your latitude on Earth. People ...
01-Star Atlas Project - Mapping the Heavens
... Apparent means what it says, how does it "appear " from where you're standing. If you're standing upon the Earth, it will appear quite differently than if you're standing on ...
... Apparent means what it says, how does it "appear " from where you're standing. If you're standing upon the Earth, it will appear quite differently than if you're standing on ...
Observing Orion
... Horsehead is caused mostly by thick dust blocking the glow. This is very difficult object and until relatively recently it was thought to be unobservable by amateurs. It requires very clear skies and usually a large scope. A Hydrogen Beta filter is also generally required, although some references s ...
... Horsehead is caused mostly by thick dust blocking the glow. This is very difficult object and until relatively recently it was thought to be unobservable by amateurs. It requires very clear skies and usually a large scope. A Hydrogen Beta filter is also generally required, although some references s ...
the life cycles of stars (5) - U3A Bendigo Courses / Activities
... ignite Helium burning and never become red giants. They fade quietly shrinking under gravity generating energy just from gravity collapse. They get dimmer and dimmer but at the same time get smaller and smaller so they have little surface area to radiate away so become hot and blue. They end in the ...
... ignite Helium burning and never become red giants. They fade quietly shrinking under gravity generating energy just from gravity collapse. They get dimmer and dimmer but at the same time get smaller and smaller so they have little surface area to radiate away so become hot and blue. They end in the ...
Stars, Galaxies, and the Universe Section 1 Section 1
... • Stars vary in size and mass. • Stars such as the sun are considered medium-sized stars. The sun has a diameter of 1,390,000 km. • Most of the stars you can see in the night sky are medium-sized stars. • Many stars also have about the same mass as the sun, however some stars may be more or less mas ...
... • Stars vary in size and mass. • Stars such as the sun are considered medium-sized stars. The sun has a diameter of 1,390,000 km. • Most of the stars you can see in the night sky are medium-sized stars. • Many stars also have about the same mass as the sun, however some stars may be more or less mas ...
Chapter three: The properties of Stars
... Chapter three: The properties of Stars When we look up into the sky in a clear night, all of the stars locate at the inner surface of a sphere called celestial sphere and they seem to be at same distance from us. However this is just a projection effect. For the stars we can see with our unaided eye ...
... Chapter three: The properties of Stars When we look up into the sky in a clear night, all of the stars locate at the inner surface of a sphere called celestial sphere and they seem to be at same distance from us. However this is just a projection effect. For the stars we can see with our unaided eye ...
nasafinal - University of Oregon
... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
... initial research money granted by the OSGC, we were able to successfully acquire observing time during cycle 4 of the GALEX emission. However, various technical issues associated with the data pipeline processing of our images, delayed the release of that data by approximately one year. Indeed, it w ...
Unit 1
... • Light from galaxies always appears fuzzy and diffuse, due to the vast separation between the Sun and the observed galaxy, as well as the separation between the stars of that galaxy! – The paleness of visible light from distant galaxies is called the surface brightness. ...
... • Light from galaxies always appears fuzzy and diffuse, due to the vast separation between the Sun and the observed galaxy, as well as the separation between the stars of that galaxy! – The paleness of visible light from distant galaxies is called the surface brightness. ...
Introduction to the HR Diagram
... periodic table of the elements. The periodic table is an arrangement of all the known elements in order of increasing atomic number. The reason why the elements are arranged as they are in the periodic table is to fit them all, with their widely diverse physical and chemical properties, into a logic ...
... periodic table of the elements. The periodic table is an arrangement of all the known elements in order of increasing atomic number. The reason why the elements are arranged as they are in the periodic table is to fit them all, with their widely diverse physical and chemical properties, into a logic ...
Be Stars
... classified into are; O, B, A, F, G, K and M. O stars are the hottest, meaning the temperature of the types of stars in the diagram declines. In each spectral type there are sub-categories. These categories are numbered from 0-9 eg. O1, B4, F6, K8 etc. ...
... classified into are; O, B, A, F, G, K and M. O stars are the hottest, meaning the temperature of the types of stars in the diagram declines. In each spectral type there are sub-categories. These categories are numbered from 0-9 eg. O1, B4, F6, K8 etc. ...
The H-R Diagram
... • White Stars, with prominent hydrogen lines. Called them “A stars.” • Blue-white stars, with less prominent H lines, and weak helium lines. Called them “B stars” • Then, no more in this color direction, so skip some letters and… Cream colored stars, with weaker H lines and lots of very weak other l ...
... • White Stars, with prominent hydrogen lines. Called them “A stars.” • Blue-white stars, with less prominent H lines, and weak helium lines. Called them “B stars” • Then, no more in this color direction, so skip some letters and… Cream colored stars, with weaker H lines and lots of very weak other l ...
STAR FORMATION (Ch. 19) - University of Texas Astronomy Home
... globules (dark clouds) and giant gaseous pillars (emission nebulae), followed by circumstellar disks, and progressing to evolved massive stars in the young starburst cluster.To the upper right of center is the evolved blue supergiant called Sher 25. The star has a unique circumstellar ring of glowin ...
... globules (dark clouds) and giant gaseous pillars (emission nebulae), followed by circumstellar disks, and progressing to evolved massive stars in the young starburst cluster.To the upper right of center is the evolved blue supergiant called Sher 25. The star has a unique circumstellar ring of glowin ...
Stars, Galaxies, and the Universe Section 1 Distances to Stars
... • Stars vary in size and mass. • Stars such as the sun are considered medium-sized stars. The sun has a diameter of 1,390,000 km. • Most of the stars you can see in the night sky are medium-sized stars. • Many stars also have about the same mass as the sun, however some stars may be more or less mas ...
... • Stars vary in size and mass. • Stars such as the sun are considered medium-sized stars. The sun has a diameter of 1,390,000 km. • Most of the stars you can see in the night sky are medium-sized stars. • Many stars also have about the same mass as the sun, however some stars may be more or less mas ...
astronomy practice test ch 9
... ____ 12. The absolute magnitude of a star is the apparent magnitude it would have if it were 10 pc from Earth. ____ 13. Lines in the spectra of supergiant stars are broader than the same spectral lines in main sequence stars of the same spectral type. ____ 14. Giant stars are members of luminosity c ...
... ____ 12. The absolute magnitude of a star is the apparent magnitude it would have if it were 10 pc from Earth. ____ 13. Lines in the spectra of supergiant stars are broader than the same spectral lines in main sequence stars of the same spectral type. ____ 14. Giant stars are members of luminosity c ...
Astrophysics notes - School
... Since 1 Mpc = 3.1x1022 m, the age of the universe is approximately: 3.1x1022 m / 65000 m.s-1 = 4.8x1017 s To calculate the age of the universe in years we need to divide by: (60s x 60min x 24hrs x 365.25 days) = 31557600 Number of seconds in a year Which gives us: ...
... Since 1 Mpc = 3.1x1022 m, the age of the universe is approximately: 3.1x1022 m / 65000 m.s-1 = 4.8x1017 s To calculate the age of the universe in years we need to divide by: (60s x 60min x 24hrs x 365.25 days) = 31557600 Number of seconds in a year Which gives us: ...
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.