Some Basic Principles from Astronomy
... understand the fundamental nature of the sources the apparent magnitude is not as useful. • Consider an example: the brightest star in the sky is Sirius (α CMa), with an apparent magnitude m = −1.47. The second brightest is the star Canopus (α Car) in the southern constellation Carina, has an appare ...
... understand the fundamental nature of the sources the apparent magnitude is not as useful. • Consider an example: the brightest star in the sky is Sirius (α CMa), with an apparent magnitude m = −1.47. The second brightest is the star Canopus (α Car) in the southern constellation Carina, has an appare ...
For instance, two hydrogen atoms may fuse together to form one
... of visible light given off (its brightness) and the color we perceive the star to be. For example, yellow stars produce light of all colors, but the distribution causes our eyes to see more yellow light than any other color. White stars give off roughly equal amounts of every kind of light, and the ...
... of visible light given off (its brightness) and the color we perceive the star to be. For example, yellow stars produce light of all colors, but the distribution causes our eyes to see more yellow light than any other color. White stars give off roughly equal amounts of every kind of light, and the ...
K - College of San Mateo
... Meade 8” SCT telescope with f/6.3 focal reducer. The faster f/ratio allows shorter exposure times, and imaging of fainter stars. FL=1270mm. Focusing is done manually. SBIG SGS spectrograph with 600 lines per mm, with hi res. grating. Dispersion=1.06A/pixel. Stars are imaged in blue and/or red end of ...
... Meade 8” SCT telescope with f/6.3 focal reducer. The faster f/ratio allows shorter exposure times, and imaging of fainter stars. FL=1270mm. Focusing is done manually. SBIG SGS spectrograph with 600 lines per mm, with hi res. grating. Dispersion=1.06A/pixel. Stars are imaged in blue and/or red end of ...
Double Stars Discovered by IOTA Predicted Occultations July, 2010
... Both components of the double star were occulted as observed in Arizona, USA. As observed in Japan, one component of the double star was occulted by three observers and 9 observers recorded miss observations. The light curve appears to be a BBAA event. A double asteroid was initially considered, but ...
... Both components of the double star were occulted as observed in Arizona, USA. As observed in Japan, one component of the double star was occulted by three observers and 9 observers recorded miss observations. The light curve appears to be a BBAA event. A double asteroid was initially considered, but ...
15-1 Notes - westscidept
... use a ________________ to separate a star’s light into a spectrum. The spectrum gives information about the ______________ and temperature of a star. When a chemical element emits ________, only some colors in the spectrum appear. These are called ____________ lines. The __________ atmosphere of a s ...
... use a ________________ to separate a star’s light into a spectrum. The spectrum gives information about the ______________ and temperature of a star. When a chemical element emits ________, only some colors in the spectrum appear. These are called ____________ lines. The __________ atmosphere of a s ...
Integrative Studies 410 Our Place in the Universe
... Herschel’s Findings • Stars thinned out very fast at right angles to Milky Way • In the plane of the Milky Way the thinning was slower and depended upon the direction in which he looked • Flaws: – Observations made only in visible spectrum – Did not take into account absorption by interstellar gas ...
... Herschel’s Findings • Stars thinned out very fast at right angles to Milky Way • In the plane of the Milky Way the thinning was slower and depended upon the direction in which he looked • Flaws: – Observations made only in visible spectrum – Did not take into account absorption by interstellar gas ...
HR Diagram Practice Page
... 1. Which star is brighter? Aldeberan or Betelgeuse 2. Which star is cooler? Rigel or Mira 3. Which star is larger in size? Polaris or Alpha Centauri B 4. Which star has a higher temperature? Tau Ceti or Procyon B 5. Which star is hotter? Regulus or Deneb 6. Which star is smaller in size? Sun or Anta ...
... 1. Which star is brighter? Aldeberan or Betelgeuse 2. Which star is cooler? Rigel or Mira 3. Which star is larger in size? Polaris or Alpha Centauri B 4. Which star has a higher temperature? Tau Ceti or Procyon B 5. Which star is hotter? Regulus or Deneb 6. Which star is smaller in size? Sun or Anta ...
Exercise 9
... Introduction: By looking at an apparently flat background of stars at night or at a star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of ...
... Introduction: By looking at an apparently flat background of stars at night or at a star chart printed on a page, we often forget about the three-dimensional nature of the universe. In this exercise, you will construct (with welding rods and Styrofoam balls) a model of nearby space including many of ...
Astronomy 103
... brighter. • The brightness of sunlight on Saturn is 1400/100 = 14 watts/meter2. This is why the outer planets are ...
... brighter. • The brightness of sunlight on Saturn is 1400/100 = 14 watts/meter2. This is why the outer planets are ...
Chapter 12
... A star’s mass (and chemical composition) completely determines its properties. That’s why stars initially all line up along the main sequence. ...
... A star’s mass (and chemical composition) completely determines its properties. That’s why stars initially all line up along the main sequence. ...
Integrative Studies 410 Our Place in the Universe
... Small, rapidly rotating objects Can’t be white dwarfs; must be neutron stars ...
... Small, rapidly rotating objects Can’t be white dwarfs; must be neutron stars ...
Constellations and the Galactic Plane
... ancients to attribute names and stories to. Orion the hunter, Cygnus the swan, Leo the lion are all familiar names to northern hemisphere night sky watchers. There are 88 named constellations, each having numerous stars. This exercise takes you through some of the most recognizable ones in the Octob ...
... ancients to attribute names and stories to. Orion the hunter, Cygnus the swan, Leo the lion are all familiar names to northern hemisphere night sky watchers. There are 88 named constellations, each having numerous stars. This exercise takes you through some of the most recognizable ones in the Octob ...
16. Properties of Stars
... What is the Hertzsprung-Russell (HR) diagram? • It is the most important classification tool in stellar astronomy. Stars are located on the HR diagram by their surface temperature (or spectral type) along the horizontal axis and their luminosity along the vertical axis. Temperature decreases from le ...
... What is the Hertzsprung-Russell (HR) diagram? • It is the most important classification tool in stellar astronomy. Stars are located on the HR diagram by their surface temperature (or spectral type) along the horizontal axis and their luminosity along the vertical axis. Temperature decreases from le ...
RR animation
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
... with a mass of around half the Sun's. They are thought to have previously shed mass and consequently, they were once stars with similar or slightly less mass than the Sun, around 0.8 solar masses. RR Lyrae stars pulse in a manner similar to Cepheid variables, so the mechanism for the pulsation is th ...
Stars and Constellations
... largest stars man has found. Its diameter is 400 million miles. Rigel, a brilliant blue star, is positioned at Orion's left knee. He appears to be holding his right arm over his head. If you imagine a line drawn along Orion's belt toward the southeast, you will find the star, Sirius, the dog star. S ...
... largest stars man has found. Its diameter is 400 million miles. Rigel, a brilliant blue star, is positioned at Orion's left knee. He appears to be holding his right arm over his head. If you imagine a line drawn along Orion's belt toward the southeast, you will find the star, Sirius, the dog star. S ...
- Amazing Space, STScI
... center of the star at 1.5 million miles per hour. At the bottom-left corner of the image is an irregularly shaped object called a dark globule. These are dark clouds of dust and gas that resist erosion by the stellar winds. New stars may be forming in their depths. Moving along the lower-left quadra ...
... center of the star at 1.5 million miles per hour. At the bottom-left corner of the image is an irregularly shaped object called a dark globule. These are dark clouds of dust and gas that resist erosion by the stellar winds. New stars may be forming in their depths. Moving along the lower-left quadra ...
HR DIAGRAM ACTIVITY
... You can check your HR diagram at: http://deskarati.com/wp-content/uploads/2012/03/HertzsprungRussell-Diagram.jpg 1. Draw a circle around all the red giants on your graph and label this enclosed area Red Giants. 2. Draw a circle around all the white dwarfs and label this enclosed area White Dwarfs. 3 ...
... You can check your HR diagram at: http://deskarati.com/wp-content/uploads/2012/03/HertzsprungRussell-Diagram.jpg 1. Draw a circle around all the red giants on your graph and label this enclosed area Red Giants. 2. Draw a circle around all the white dwarfs and label this enclosed area White Dwarfs. 3 ...
ppt - Serbian Virtual Observatory - astronomical observatory belgrade
... For all eleven double stars there exist measurements (sufficient number) on the basis of which one can obtain the apparent orbit. Nevertheless, we prefer a combined approach using both apparent orbits and estimation. The first step in the estimation is in fact testing the hypothesis that both stars ...
... For all eleven double stars there exist measurements (sufficient number) on the basis of which one can obtain the apparent orbit. Nevertheless, we prefer a combined approach using both apparent orbits and estimation. The first step in the estimation is in fact testing the hypothesis that both stars ...
The Properties of Stars
... Mid-mass stars spend their mainsequence lives fusing hydrogen into helium in their cores. (50 billion years) When the core runs out of hydrogen, the push outward due to fusion decreases and gravity contracts the star causing fusion to begin in a shell of hydrogen surrounding the core. Shell-hydrogen ...
... Mid-mass stars spend their mainsequence lives fusing hydrogen into helium in their cores. (50 billion years) When the core runs out of hydrogen, the push outward due to fusion decreases and gravity contracts the star causing fusion to begin in a shell of hydrogen surrounding the core. Shell-hydrogen ...
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.