![Introduction to Astronomy](http://s1.studyres.com/store/data/006104666_1-b3e841db0a6d42bab2eec3b17f0a1090-300x300.png)
Introduction to Astronomy
... • “Apparent magnitude” is a measure of apparent brightness. Antares has mag. 1; Polaris has mag. 2; naked eye limit is about 6. Sirius has mag. –1.5. • “Absolute magnitude” is a measure of true brightness. It’s what the apparent magnitude would be if the star were 33 light-years away. Sun’s absolute ...
... • “Apparent magnitude” is a measure of apparent brightness. Antares has mag. 1; Polaris has mag. 2; naked eye limit is about 6. Sirius has mag. –1.5. • “Absolute magnitude” is a measure of true brightness. It’s what the apparent magnitude would be if the star were 33 light-years away. Sun’s absolute ...
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... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
... • Some have names that go back to ancient times (e.g. Castor and Pollux, Greek mythology) • Some were named by Arab astronomers (e.g. Aldebaran, Algol, etc.) • Since the 17th century we use a scheme that lists stars by constellation – in order of their apparent brightness – labeled alphabetically in ...
The Family of Stars
... that a star would have if it were at a distance of 10 pc. If we know a star’s absolute magnitude, we can infer its distance by comparing absolute and apparent magnitudes. ...
... that a star would have if it were at a distance of 10 pc. If we know a star’s absolute magnitude, we can infer its distance by comparing absolute and apparent magnitudes. ...
STARS Chapter 8 Section 1
... one year, or 186,282 miles per second, or 5.88 trillion miles**** This quasar is 10 billion light years from Earth ...
... one year, or 186,282 miles per second, or 5.88 trillion miles**** This quasar is 10 billion light years from Earth ...
File
... Daily East / West motion of the sky Due to the Earth’s rotation (15°/hour) [360°/24 hours = 15°/hour] [1° in 4 minutes] ...
... Daily East / West motion of the sky Due to the Earth’s rotation (15°/hour) [360°/24 hours = 15°/hour] [1° in 4 minutes] ...
Stars - Weebly
... Life Cycle of Stars • The matter inside the star will be compressed so tightly that its atoms are compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the univ ...
... Life Cycle of Stars • The matter inside the star will be compressed so tightly that its atoms are compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it will collapse so completely that it will literally disappear from the univ ...
HR DIAGRAM REPORT FORM
... (V), Giants (combine all I,II,III,IV types), White Dwarfs. Do not count Sun. Go to the tables to count. A._________________ B._________________ 2. In Table 10.1, the brightest stars, how many stars are brighter than the sun? Brighter means lower magnitude (M) not higher. If double both must be consi ...
... (V), Giants (combine all I,II,III,IV types), White Dwarfs. Do not count Sun. Go to the tables to count. A._________________ B._________________ 2. In Table 10.1, the brightest stars, how many stars are brighter than the sun? Brighter means lower magnitude (M) not higher. If double both must be consi ...
August 2013 - Joliet Junior College
... In the northeastern sky is the “W’ that marks the constellation of Cassiopeia. To the right of Vega is Hercules and the Hercules globular cluster. The globular cluster is hundreds of thousands of stars in a tight group. It appears as a fuzz ball in binoculars. The star Deneb in Cygnus is one of the ...
... In the northeastern sky is the “W’ that marks the constellation of Cassiopeia. To the right of Vega is Hercules and the Hercules globular cluster. The globular cluster is hundreds of thousands of stars in a tight group. It appears as a fuzz ball in binoculars. The star Deneb in Cygnus is one of the ...
Constellations - Mayo Dark Sky Park
... knows what stories are ancestors here created when they saw this giant in the night sky? Let your imagination wander as you learn about the patterns of stars forming constellations and the legends and myths that have been attached to them over thousands of years. ...
... knows what stories are ancestors here created when they saw this giant in the night sky? Let your imagination wander as you learn about the patterns of stars forming constellations and the legends and myths that have been attached to them over thousands of years. ...
Society News - Bristol Astronomical Society
... Its companion (iota B) is a white A-class (A3) main sequence dwarf star with an apparent magnitude of +6.57. The pair are separated by 30.5 arcseconds and can be split with a small telescope. Iota Cancri lies just over 9 degrees north of the open cluster M44 and marks the northern tip of the inverte ...
... Its companion (iota B) is a white A-class (A3) main sequence dwarf star with an apparent magnitude of +6.57. The pair are separated by 30.5 arcseconds and can be split with a small telescope. Iota Cancri lies just over 9 degrees north of the open cluster M44 and marks the northern tip of the inverte ...
March
... standard planetary nebula with a 16th magnitude central star. The unusual appearance is due to the angle of the nebular ring that is expanding outward from the white dwarf at about 42 K/sec. Most of the visible light is emitted in the OIII doubly ionized Oxygen band so the use of a nebula or OIII fi ...
... standard planetary nebula with a 16th magnitude central star. The unusual appearance is due to the angle of the nebular ring that is expanding outward from the white dwarf at about 42 K/sec. Most of the visible light is emitted in the OIII doubly ionized Oxygen band so the use of a nebula or OIII fi ...
August
... star splits into a close binary. While some observers see color differences, most see the stars as two pairs of white headlights oriented nearly perpendicular to each other. Albireo Beta Cygni, in the constellation Cygnus (SIG-nus) is probably not a true binary, but a visual double star with extraor ...
... star splits into a close binary. While some observers see color differences, most see the stars as two pairs of white headlights oriented nearly perpendicular to each other. Albireo Beta Cygni, in the constellation Cygnus (SIG-nus) is probably not a true binary, but a visual double star with extraor ...
Space Science Unit
... and other important information about the star. • Most stars are what we consider main sequence (including our sun). They make up 90% of the stars in our sky. These stars are the diagonal strip running through the middle of the chart. ...
... and other important information about the star. • Most stars are what we consider main sequence (including our sun). They make up 90% of the stars in our sky. These stars are the diagonal strip running through the middle of the chart. ...
2007-8 Astronomy Outline
... **Night Sky Journal Entry 1 Example** Date: Time: (try to go out around the same time each night) Light Conditions: (here is where you state how dark it is; cloud cover; how much light is coming in from other houses aka light pollution) Location: where you are and the direction you are facing Observ ...
... **Night Sky Journal Entry 1 Example** Date: Time: (try to go out around the same time each night) Light Conditions: (here is where you state how dark it is; cloud cover; how much light is coming in from other houses aka light pollution) Location: where you are and the direction you are facing Observ ...
The Northern sky - Visit Isle of Man
... seven brightest stars of the Ursa Major constellation. In the days before we had compasses to navigate, people consulted the night sky and used the stars to work out which way pointed north was. Find the Plough and use the two stars at the end, (Merak & Dubhe) at edge of the plough’s bowl (these are ...
... seven brightest stars of the Ursa Major constellation. In the days before we had compasses to navigate, people consulted the night sky and used the stars to work out which way pointed north was. Find the Plough and use the two stars at the end, (Merak & Dubhe) at edge of the plough’s bowl (these are ...
Characteristics of Stars Stars Analyzing Starlight Star Characteristics
... by analyzing the spectra of the light that a star emits ...
... by analyzing the spectra of the light that a star emits ...
Stars - Trimble County Schools
... Constellation Project • Starting September 29, we will being a class project on Constellations • You will pair up and pick a constellation • Do some research on the constellation • Make a visual aid about the constellation • More information tomorrow ...
... Constellation Project • Starting September 29, we will being a class project on Constellations • You will pair up and pick a constellation • Do some research on the constellation • Make a visual aid about the constellation • More information tomorrow ...
Astronomy 111 – Lecture 2
... • People have seen patterns and drawn figures in the sky by connecting the bright stars for ages. • These figures of stars are the Constellations. • All cultures have populated the night sky with constellations. • Most constellations are composed of bright stars that stand out from the others. • Man ...
... • People have seen patterns and drawn figures in the sky by connecting the bright stars for ages. • These figures of stars are the Constellations. • All cultures have populated the night sky with constellations. • Most constellations are composed of bright stars that stand out from the others. • Man ...
What are stars?
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Chapter 8, Lesson 4, 2nd Packet, pdf
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Variable and Binary Stars
... By a small majority, all stars are binary or trinary – 53% of star systems are multiple – 75% of O-type stars seem to have a companion – If Jupiter had been ~100 times more massive, the Sun would have a companion star ...
... By a small majority, all stars are binary or trinary – 53% of star systems are multiple – 75% of O-type stars seem to have a companion – If Jupiter had been ~100 times more massive, the Sun would have a companion star ...
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.