Stars
... When seen from the Earth, most stars appear as small points of light because they are very far away. They do not move. The Earth rotates, so we are the ones moving. ...
... When seen from the Earth, most stars appear as small points of light because they are very far away. They do not move. The Earth rotates, so we are the ones moving. ...
The Hertzsprung-Russell Diagram
... • Relative measure of luminosity & temperature. • Shows stars of different ages/stages at the same time. ...
... • Relative measure of luminosity & temperature. • Shows stars of different ages/stages at the same time. ...
The Magnitude Scale
... where Fν is the flux per unit frequency received from the source, and F ν0 is a normalising constant. The normalising constants have been calibrated for standard photometric bands, some of which are listed in table 1 below. Notice that a larger value of the magnitude means that the source is fainter ...
... where Fν is the flux per unit frequency received from the source, and F ν0 is a normalising constant. The normalising constants have been calibrated for standard photometric bands, some of which are listed in table 1 below. Notice that a larger value of the magnitude means that the source is fainter ...
Star Maps and Constellations (pdf 3.7 Megs)
... anything to do with a crab, it's an alternative (older?) interpretation of the constellation. Often times the name of the star is Arabic, which will have to do then with an Arabic interpretation of the constellation.3 In fact you'll note that the majority of star names are Arabic in origin. Further, ...
... anything to do with a crab, it's an alternative (older?) interpretation of the constellation. Often times the name of the star is Arabic, which will have to do then with an Arabic interpretation of the constellation.3 In fact you'll note that the majority of star names are Arabic in origin. Further, ...
Space Science Unit - World of Teaching
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
Constellations, Star Names, and Magnitudes
... International Astronomical Union official, but the IAU has no true legal authority to name stars (or demote planets, for that matter). Companies that sell star names as gifts are a SCAM! ...
... International Astronomical Union official, but the IAU has no true legal authority to name stars (or demote planets, for that matter). Companies that sell star names as gifts are a SCAM! ...
Calculating_Main_Sequence_Lifetimes_StudentGuide
... If we remember that the Sun’s mass is 2 10 Kg, and knowing the stellar mass, we can calculate the period in which the star burns Hydrogen, which the time it stays as a main sequence star. The star turns off: the star exhausts the Hydrogen in its core and it continues to burn it in shells.. For a ‘s ...
... If we remember that the Sun’s mass is 2 10 Kg, and knowing the stellar mass, we can calculate the period in which the star burns Hydrogen, which the time it stays as a main sequence star. The star turns off: the star exhausts the Hydrogen in its core and it continues to burn it in shells.. For a ‘s ...
Space Science Unit
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
... • This chart uses surface temperature of the star and the absolute magnitude (brightness) of the star to help astronomers decide which phase of the star’s life cycle the star is in and other important information about the star. • Most stars are what we consider main sequence (including our sun). Th ...
Constellations
... C. It is located near the constellation Orion D. It is made up of stars from the constellation Orion ...
... C. It is located near the constellation Orion D. It is made up of stars from the constellation Orion ...
May 2009 Tz 2
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
... (d) Alnitak is a main sequence star with a luminosity similar to that of Antares. Use the value quoted in (c)(ii) to deduce that the mass of Alnitak is in the range 16 MS to 40 MS, where MS is the mass of the Sun. ...
Homework PHY121 (Astronomy
... particular object, animal or person to the people in ancient cultures. Most stars in such groupings, however, only seem to be related to each other. In reality, they have very different distances to us. If one would look at a given constellation, say Cassiopeia, which forms a big “W” on our sky, fro ...
... particular object, animal or person to the people in ancient cultures. Most stars in such groupings, however, only seem to be related to each other. In reality, they have very different distances to us. If one would look at a given constellation, say Cassiopeia, which forms a big “W” on our sky, fro ...
Physics 1025: Lecture 18 Stellar Magnitudes, Absolute Magnitudes
... brighter than red. For example among the brighter stars, Rigel is blue and Betelgeuse is red—which is brighter? Thirdly, the eye cannot integrate add up light – it either sees a dim object or not; it is an instantaneous detector. Eye estimates of brightness are called visual magnitudes, mv It is bet ...
... brighter than red. For example among the brighter stars, Rigel is blue and Betelgeuse is red—which is brighter? Thirdly, the eye cannot integrate add up light – it either sees a dim object or not; it is an instantaneous detector. Eye estimates of brightness are called visual magnitudes, mv It is bet ...
The Hertzsprung – Russell Diagram
... For astronomers, a graph that displays a star’s luminosity on the y-axis and its surface temperature on the x-axis sets up an extremely useful diagram called a Hertzsprung-Russell, or H-R Diagram. In 1910 Ejnar Hertzsprung and Henry Norris Russell discovered that when all of the known stars were put ...
... For astronomers, a graph that displays a star’s luminosity on the y-axis and its surface temperature on the x-axis sets up an extremely useful diagram called a Hertzsprung-Russell, or H-R Diagram. In 1910 Ejnar Hertzsprung and Henry Norris Russell discovered that when all of the known stars were put ...
Table Number: _____
... Using the distance modulus equation, d= 10 x 10(m-M)/5 , in the Introduction to calculate the distance to the cluster in parsecs. Then convert your answer to light years. Show all work in the ...
... Using the distance modulus equation, d= 10 x 10(m-M)/5 , in the Introduction to calculate the distance to the cluster in parsecs. Then convert your answer to light years. Show all work in the ...
Red Giants and White Dwarfs
... • Requires very high temperatures (100 million K) due to greater electrostatic repulsion • Produces less energy per kg than hydrogen fusion • Can continue in core of a star for about 20% of mainsequence lifetime ...
... • Requires very high temperatures (100 million K) due to greater electrostatic repulsion • Produces less energy per kg than hydrogen fusion • Can continue in core of a star for about 20% of mainsequence lifetime ...
Supernova
... • Stars may explode cataclysmically. – Large energy release (103 – 106 L) – Short time period (few days) • These explosions used to be classified as novas or supernovas. – Based on absolute magnitude • They are now all called supernovas. ...
... • Stars may explode cataclysmically. – Large energy release (103 – 106 L) – Short time period (few days) • These explosions used to be classified as novas or supernovas. – Based on absolute magnitude • They are now all called supernovas. ...
Create a HR Diagram - EarthSpaceScience
... Use that Table of stars and plot them on the Empty H-R diagram based on Luminosity and Spectral Class. Use circles or shading to correctly label the Main Sequence, Giants, and Dwarfs. Then use your diagram to answer the questions. Stars: Star Name ...
... Use that Table of stars and plot them on the Empty H-R diagram based on Luminosity and Spectral Class. Use circles or shading to correctly label the Main Sequence, Giants, and Dwarfs. Then use your diagram to answer the questions. Stars: Star Name ...
III. Contents of The Universe
... B. Stars – balls of hot gas that emit light The Sun is the closest star to us 1. Multiple Star System most stars that we see in the sky are parts of multiple star systems revolve around each other. two stars = binary star system. ex. Algol, eclipsing binary ...
... B. Stars – balls of hot gas that emit light The Sun is the closest star to us 1. Multiple Star System most stars that we see in the sky are parts of multiple star systems revolve around each other. two stars = binary star system. ex. Algol, eclipsing binary ...
Discussion Activity #10
... A. Both stars have the same luminosity, but the apparent brightness of the closer star is four times as great as that of the more distant star. B. Both stars have the same apparent brightness, but the luminosity of the closer star is four times as great as that of the more distant star. C. Both star ...
... A. Both stars have the same luminosity, but the apparent brightness of the closer star is four times as great as that of the more distant star. B. Both stars have the same apparent brightness, but the luminosity of the closer star is four times as great as that of the more distant star. C. Both star ...
Review Game
... they would generate so much power that they would blow themselves apart. Its core contracts, but its outer layers expand and the star becomes bigger and brighter. the expanding shell of gas that is no longer gravitationally held to the remnant of a lowmass star protostar, main-sequence, red giant, w ...
... they would generate so much power that they would blow themselves apart. Its core contracts, but its outer layers expand and the star becomes bigger and brighter. the expanding shell of gas that is no longer gravitationally held to the remnant of a lowmass star protostar, main-sequence, red giant, w ...
printer-friendly sample test questions
... Brightness of stars is traditionally expressed as magnitude. The more negative the value of magnitude, the brighter the star. The more positive the value of magnitude, the dimmer the star. Two types of magnitude are used when describing the brightness of stars. Apparent Magnitude is how bright the s ...
... Brightness of stars is traditionally expressed as magnitude. The more negative the value of magnitude, the brighter the star. The more positive the value of magnitude, the dimmer the star. Two types of magnitude are used when describing the brightness of stars. Apparent Magnitude is how bright the s ...
What are stars?
... How might you find a certain star in the night sky? __________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How are stars gro ...
... How might you find a certain star in the night sky? __________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How are stars gro ...
Chapter 8, Lesson 4, 2nd Packet, pdf
... How might you find a certain star in the night sky? __________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How are stars gro ...
... How might you find a certain star in the night sky? __________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ How are stars gro ...
Lucas - WordPress.com
... nearby constellations Hydra the water snake, and Crater the cup. There are no particularly bright stars in Corvus. The four main stars make a polygon shape. ...
... nearby constellations Hydra the water snake, and Crater the cup. There are no particularly bright stars in Corvus. The four main stars make a polygon shape. ...
Canis Minor
Canis Minor /ˌkeɪnɨs ˈmaɪnər/ is a small constellation in the northern celestial hemisphere. In the second century, it was included as an asterism, or pattern, of two stars in Ptolemy's 48 constellations, and it is counted among the 88 modern constellations. Its name is Latin for ""lesser dog"", in contrast to Canis Major, the ""greater dog""; both figures are commonly represented as following the constellation of Orion the hunter.Canis Minor contains only two stars brighter than the fourth magnitude, Procyon (Alpha Canis Minoris), with a magnitude of 0.34, and Gomeisa (Beta Canis Minoris), with a magnitude of 2.9. The constellation's dimmer stars were noted by Johann Bayer, who named eight stars including Alpha and Beta, and John Flamsteed, who numbered fourteen. Procyon is the seventh-brightest star in the night sky, as well as one of the closest. A yellow-white main sequence star, it has a white dwarf companion. Gomeisa is a blue-white main sequence star. Luyten's Star is a ninth-magnitude red dwarf and the Solar System's next closest stellar neighbour in the constellation after Procyon. The fourth-magnitude HD 66141, which has evolved into an orange giant towards the end of its life cycle, was discovered to have a planet in 2012. There are two faint deep sky objects within the constellation's borders. The 11 Canis-Minorids are a meteor shower that can be seen in early December.