Star Map - Science Centre
... (gamma Orionis) is blue giant star. Its name means “female warrior”, indicating that Orion may not have always been seen as a male hunter. Bellatrix is the closest of Orion’s stars (243 light-years away). Rigel (beta Orionis) is a large bluish-white supergiant star, which becomes the brightest star ...
... (gamma Orionis) is blue giant star. Its name means “female warrior”, indicating that Orion may not have always been seen as a male hunter. Bellatrix is the closest of Orion’s stars (243 light-years away). Rigel (beta Orionis) is a large bluish-white supergiant star, which becomes the brightest star ...
The Official Magazine of the University Of St Andrews Astronomical Society 1
... For starters, a small band of the Milky Way runs right through the centre of Perseus, making it a lovely sight through binoculars. And while you’ve got them out, check out The Double Cluster ( NGC 869 and NGC 884), two open clusters right next to each other between the top of Perseus and Cassiopeia. ...
... For starters, a small band of the Milky Way runs right through the centre of Perseus, making it a lovely sight through binoculars. And while you’ve got them out, check out The Double Cluster ( NGC 869 and NGC 884), two open clusters right next to each other between the top of Perseus and Cassiopeia. ...
The Death of Stars
... 2. A planetary nebula is a. the expelled outer envelope of a medium mass star. b. produced by a supernova explosion. c. produced by a nova explosion. d. a nebula within which planets are forming. e. a cloud of hot gas surround a planet 3. The Chandrasekhar limit tells us that a. accretion disks can ...
... 2. A planetary nebula is a. the expelled outer envelope of a medium mass star. b. produced by a supernova explosion. c. produced by a nova explosion. d. a nebula within which planets are forming. e. a cloud of hot gas surround a planet 3. The Chandrasekhar limit tells us that a. accretion disks can ...
CHP 13
... 2. A planetary nebula is a. the expelled outer envelope of a medium mass star. b. produced by a supernova explosion. c. produced by a nova explosion. d. a nebula within which planets are forming. e. a cloud of hot gas surround a planet 3. The Chandrasekhar limit tells us that a. accretion disks can ...
... 2. A planetary nebula is a. the expelled outer envelope of a medium mass star. b. produced by a supernova explosion. c. produced by a nova explosion. d. a nebula within which planets are forming. e. a cloud of hot gas surround a planet 3. The Chandrasekhar limit tells us that a. accretion disks can ...
Additional Cosmology Images
... myriad of stars in crystal clear detail. The brilliant open star clusters are located about 200,000 lightyears away and are roughly 65 light-years across. Star clusters can be held together tightly by gravity, as is the case with densely packed crowds of hundreds of thousands of stars, called globul ...
... myriad of stars in crystal clear detail. The brilliant open star clusters are located about 200,000 lightyears away and are roughly 65 light-years across. Star clusters can be held together tightly by gravity, as is the case with densely packed crowds of hundreds of thousands of stars, called globul ...
First young loose association in the northern hemisphere?
... typical of class II infrared sources, i.e. T Tauri stars (TTS) still surrounded by an accretion disc. Moreover we can characterize its properties because this stars is also correlated with a source of AKARI and IRAS catalogs (Guillout et al 2010b). Because of the lack of relevant infrared excess, th ...
... typical of class II infrared sources, i.e. T Tauri stars (TTS) still surrounded by an accretion disc. Moreover we can characterize its properties because this stars is also correlated with a source of AKARI and IRAS catalogs (Guillout et al 2010b). Because of the lack of relevant infrared excess, th ...
LAB #5 - GEOCITIES.ws
... In the course of the Harvard classification study, some of the old spectral types were consolidated together, and the types were re-arranged to reflect a steady change in the strengths of representative spectral lines. The order of the spectral classes became O, B, A, F, G, K, and M, and though the ...
... In the course of the Harvard classification study, some of the old spectral types were consolidated together, and the types were re-arranged to reflect a steady change in the strengths of representative spectral lines. The order of the spectral classes became O, B, A, F, G, K, and M, and though the ...
1 Introduction - High Point University
... Table 6: Fill in the empty fields above. 3. Check show luminosity classes and show isoradius lines (if they are not already checked). The green region (Dwarfs (V)) is known as the main sequence and contains all stars that are fusing hydrogen into helium as their primary energy source. Over 90% of al ...
... Table 6: Fill in the empty fields above. 3. Check show luminosity classes and show isoradius lines (if they are not already checked). The green region (Dwarfs (V)) is known as the main sequence and contains all stars that are fusing hydrogen into helium as their primary energy source. Over 90% of al ...
15_Testbank
... 11) A 10-solar-mass star is about ten times more luminous than a 1-solar-mass star. Answer: FALSE 12) Most stars on the main sequence fuse hydrogen into helium in their cores, but some do not. Answer: FALSE 13) All stars spend approximately the same amount of time on the main sequence. Answer: FALS ...
... 11) A 10-solar-mass star is about ten times more luminous than a 1-solar-mass star. Answer: FALSE 12) Most stars on the main sequence fuse hydrogen into helium in their cores, but some do not. Answer: FALSE 13) All stars spend approximately the same amount of time on the main sequence. Answer: FALS ...
Star-S_Teacher_Guide - The University of Texas at Dallas
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
... o If your students have already done the Scale Model Solar System Activity, discuss the usefulness of the scale factor. Ask your students what the advantage would be of modeling stars on the same scale. By using the same scale factor of 1:10 billion, the students will more easily be able to make com ...
Chapter 30: Stars
... However, astronomers can use special filters to observe the chromosphere when the Sun is not eclipsed. The chromosphere appears red, as shown in Figure 30-1B, because it emits most strongly in a narrow band of red wavelengths. The top layer of the Sun’s atmosphere, called the corona, extends several ...
... However, astronomers can use special filters to observe the chromosphere when the Sun is not eclipsed. The chromosphere appears red, as shown in Figure 30-1B, because it emits most strongly in a narrow band of red wavelengths. The top layer of the Sun’s atmosphere, called the corona, extends several ...
Searching for RR Lyrae Stars in M15
... The distance modulus to a celestial object is the difference between its apparent magnitude and its absolute magnitude. The apparent magnitude of an object is how luminous an object is as seen from Earth while the absolute magnitude of an object is what the apparent magnitude would be if the source ...
... The distance modulus to a celestial object is the difference between its apparent magnitude and its absolute magnitude. The apparent magnitude of an object is how luminous an object is as seen from Earth while the absolute magnitude of an object is what the apparent magnitude would be if the source ...
Stellar Census
... Which of these samples is more representative of the entire population of stars in our galaxy? A representative sample includes all parts of the population of the objects your are investigating in their proper proportions The relative proportion of common things will be greater than the relative pro ...
... Which of these samples is more representative of the entire population of stars in our galaxy? A representative sample includes all parts of the population of the objects your are investigating in their proper proportions The relative proportion of common things will be greater than the relative pro ...
Summary Of the Structure of the Milky Way
... • The Distribution of stars can reveal part of the disk-like nature of the Milky Way galaxy, but are not “deep” enough probes to fully reveal the structure of the Milky Way. • Open clusters can define the thickness of the Milky Way’s thin disk where star formation is active. • Globular clusters allo ...
... • The Distribution of stars can reveal part of the disk-like nature of the Milky Way galaxy, but are not “deep” enough probes to fully reveal the structure of the Milky Way. • Open clusters can define the thickness of the Milky Way’s thin disk where star formation is active. • Globular clusters allo ...
StellarManual
... -4.8) emits more energy than Alkaid (M = -1.8). Barnard’s Star (m = 9.5) appears brighter than Wolf 359 (13.4), and Barnard’s Star (M = 13.2) emits more energy than Wolf 359 (M = 16.6). Aldebaran (m = 0.9) appears brighter than Acrux (m = 1.6), but Acrux (M = -4.0) emits more energy than Aldebaran ( ...
... -4.8) emits more energy than Alkaid (M = -1.8). Barnard’s Star (m = 9.5) appears brighter than Wolf 359 (13.4), and Barnard’s Star (M = 13.2) emits more energy than Wolf 359 (M = 16.6). Aldebaran (m = 0.9) appears brighter than Acrux (m = 1.6), but Acrux (M = -4.0) emits more energy than Aldebaran ( ...
Jura et al. 2004 - Department of Physics and Astronomy
... 0.06 M⊕ . The summed mass of the KBOs in the Solar System is uncertain and is currently estimated to be between 0.02 M⊕ and 0.1 M⊕ (Bernstein et al. 2003; Luu & Jewitt 2002). Typical analogs of the Kuiper Belt may have total masses ≤ 0.1 M⊕ (Jura 2004). Since we observed stars with notable infrared ...
... 0.06 M⊕ . The summed mass of the KBOs in the Solar System is uncertain and is currently estimated to be between 0.02 M⊕ and 0.1 M⊕ (Bernstein et al. 2003; Luu & Jewitt 2002). Typical analogs of the Kuiper Belt may have total masses ≤ 0.1 M⊕ (Jura 2004). Since we observed stars with notable infrared ...
Labeling the HR Diagram - Mastering Physics Answers
... Hint 2. Can you determine the luminosity of a street light on a foggy night? Suppose you measure the apparent brightness of a street light that is located 100 meters away from you. If it is a foggy night and you apply the inverse square law for light, then the luminosity you calculate for the street ...
... Hint 2. Can you determine the luminosity of a street light on a foggy night? Suppose you measure the apparent brightness of a street light that is located 100 meters away from you. If it is a foggy night and you apply the inverse square law for light, then the luminosity you calculate for the street ...
The Sun and Stars
... Main sequence Once nuclear fusion begins, a star is in the main sequence stage of its stars life cycle (Figure 16.13). This is the longest and most stable part of a star’s life. The time a star stays on the main sequence depends on the star’s mass. The sun will stay on the main sequence for about 10 ...
... Main sequence Once nuclear fusion begins, a star is in the main sequence stage of its stars life cycle (Figure 16.13). This is the longest and most stable part of a star’s life. The time a star stays on the main sequence depends on the star’s mass. The sun will stay on the main sequence for about 10 ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.