File - greenscapes4you
... Supergiants are very large in addition to being very bright. Giants are somewhat smaller in radius and lower in luminosity, but still much brighter than main sequence stars of same spectral type. The hot, white, small radius stars near the lower left are called white dwarfs. Giants and Supergiants ...
... Supergiants are very large in addition to being very bright. Giants are somewhat smaller in radius and lower in luminosity, but still much brighter than main sequence stars of same spectral type. The hot, white, small radius stars near the lower left are called white dwarfs. Giants and Supergiants ...
Unit 6--Astronomy
... b. blue d. orange 3.Gamma rays, X-rays, visible light, and radio waves are all types of ____. a. nuclear energy c. ultraviolet radiation b. chromatic aberration d. electromagnetic radiation 4.Which of the following refers to the change in wavelength that occurs when an object moves toward or away fr ...
... b. blue d. orange 3.Gamma rays, X-rays, visible light, and radio waves are all types of ____. a. nuclear energy c. ultraviolet radiation b. chromatic aberration d. electromagnetic radiation 4.Which of the following refers to the change in wavelength that occurs when an object moves toward or away fr ...
Constellations, Star Names, and Magnitudes
... No longer refers to the pattern of stars itself. Now refers to a well defined region of the sky that contains the traditional star pattern. Everything inside that region of the sky is now part of the constellation, like a “celestial state”. ...
... No longer refers to the pattern of stars itself. Now refers to a well defined region of the sky that contains the traditional star pattern. Everything inside that region of the sky is now part of the constellation, like a “celestial state”. ...
HR Diagram of a Star Cluster
... A true Hertzsprung-Russell diagram is an XY plot of absolute magnitude vs. temperature (or equivalently, color or spectral class). We will assume that every one of the stars on this photograph is a member of the cluster NGC 6819 and so we will assume that they all lie at about the same distance from ...
... A true Hertzsprung-Russell diagram is an XY plot of absolute magnitude vs. temperature (or equivalently, color or spectral class). We will assume that every one of the stars on this photograph is a member of the cluster NGC 6819 and so we will assume that they all lie at about the same distance from ...
Dec 2017 - What`s Out Tonight?
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
Astronomy Webquest _2 STARS
... From Earth, there are a number of things that we can observe about stars. One of the easiest things to measure is the star's brightness, or magnitude. There are a number of things that make stars appear brighter on Earth. One factor is the distance between Earth and the star. Even though our sun is ...
... From Earth, there are a number of things that we can observe about stars. One of the easiest things to measure is the star's brightness, or magnitude. There are a number of things that make stars appear brighter on Earth. One factor is the distance between Earth and the star. Even though our sun is ...
test - Scioly.org
... dwarf-type star, cooler than the Sun, while the other is a white dwarf, the stms are so close that they complete their orbital revolution in slightly over 6 1/2 hours and have a light curve illustrated in figure #2 D) SN 2Ollfe A) HM Cancri E) NGC 1846 B) SS Cvpi ...
... dwarf-type star, cooler than the Sun, while the other is a white dwarf, the stms are so close that they complete their orbital revolution in slightly over 6 1/2 hours and have a light curve illustrated in figure #2 D) SN 2Ollfe A) HM Cancri E) NGC 1846 B) SS Cvpi ...
Herzsprung-Russell Diagram
... 14 of the 20 brightest stars in the sky must have absolute magnitude of at least 1.5 (20 times brighter than the Sun) Out of the 6000 stars visible, only 50 are dimmer than the Sun in absolute magnitude. Question: Is the Sun below average???? Answer: NO!!!!!!!!!!!!! Because, bright stars are very ra ...
... 14 of the 20 brightest stars in the sky must have absolute magnitude of at least 1.5 (20 times brighter than the Sun) Out of the 6000 stars visible, only 50 are dimmer than the Sun in absolute magnitude. Question: Is the Sun below average???? Answer: NO!!!!!!!!!!!!! Because, bright stars are very ra ...
SNC1PL The Life Cycle of Stars
... Small sized stars also convert most of their hydrogen fuel to helium at some point in their life. • Since small stars don’t have as much mass, they do not produce the conditions to reignite nuclear fusion. • The hot core remains and the outer layers simply drift away • When the white dwarf star cool ...
... Small sized stars also convert most of their hydrogen fuel to helium at some point in their life. • Since small stars don’t have as much mass, they do not produce the conditions to reignite nuclear fusion. • The hot core remains and the outer layers simply drift away • When the white dwarf star cool ...
astronomy - Scioly.org
... 46. How much brighter is a -2 magnitude star than a +2 magnitude star? 47. RR Lyrae variable stars are typically _________ giant stars? (fill in the blank with a color) 48. Variable stars are stars in which the _______ changes over time. A. Size B. Color C. Shape D. brightness 49. A planet orbits th ...
... 46. How much brighter is a -2 magnitude star than a +2 magnitude star? 47. RR Lyrae variable stars are typically _________ giant stars? (fill in the blank with a color) 48. Variable stars are stars in which the _______ changes over time. A. Size B. Color C. Shape D. brightness 49. A planet orbits th ...
Powerpoint Presentation (large file)
... • When the central temperature of a red giant reaches about 100 million K, helium fusion begins in the core • This process, also called the triple alpha process, converts helium to carbon and oxygen ...
... • When the central temperature of a red giant reaches about 100 million K, helium fusion begins in the core • This process, also called the triple alpha process, converts helium to carbon and oxygen ...
The Milky Way
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are ...
... • If you know how luminous a star REALLY is and how bright it looks from Earth, you can determine how far away it must be to look that faint. • For any star in the sky, we KNOW: – Apparent Magnitude (m) – Spectral Type (O, B, A, F, G, K, M) – Luminosity Class (Main Sequence, Giant, etc…). These are ...
BAS - Monthly Sky Guide
... Triangulum Australe is a very challenging constellation for telescope observers. It is home to many galaxies but they are all very distant and very faint. A very dark sky is required to see any of the objects here. Start, and perhaps instantly finish, with the faint galaxy NGC 6183 located 220 mill ...
... Triangulum Australe is a very challenging constellation for telescope observers. It is home to many galaxies but they are all very distant and very faint. A very dark sky is required to see any of the objects here. Start, and perhaps instantly finish, with the faint galaxy NGC 6183 located 220 mill ...
Life Cycle of Stars
... 3. Eventually, the particles of that the gas and the dust are made of are brought so close together that they start to stick together, they start to fuse and that is the energy source of a star. 4. The star then switches on and begins to shine. 5. Inside every newborn star, hydrogen atoms are fused ...
... 3. Eventually, the particles of that the gas and the dust are made of are brought so close together that they start to stick together, they start to fuse and that is the energy source of a star. 4. The star then switches on and begins to shine. 5. Inside every newborn star, hydrogen atoms are fused ...
EARTH SCIENCE KEY NOTES
... solar system started to form approximately 4.6 billion years ago (see handout on beginning of the solar system). Astronomical Unit – The distance between the Earth and the Sun (approximately 93 million miles). It takes about 225 million years for our solar system to move around the Milky Way Gal ...
... solar system started to form approximately 4.6 billion years ago (see handout on beginning of the solar system). Astronomical Unit – The distance between the Earth and the Sun (approximately 93 million miles). It takes about 225 million years for our solar system to move around the Milky Way Gal ...
Today`s Class: Measuring temperatures of stars Astronomer`s
... • Important: the different spectral lines seen are NOT primarily because stars are made of different elements ...
... • Important: the different spectral lines seen are NOT primarily because stars are made of different elements ...
Stars - Weebly
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
Document
... 20. Which of the following nuclear fuels does a one solar mass star use over the course of its entire evolution? a. hydrogen, b. hydrogen and helium, c. hydrogen, helium and carbon d. hydrogen, helium, carbon, and neon, e. hydrogen, helium, carbon, neon, and oxygen. 21. A planetary nebula is a. the ...
... 20. Which of the following nuclear fuels does a one solar mass star use over the course of its entire evolution? a. hydrogen, b. hydrogen and helium, c. hydrogen, helium and carbon d. hydrogen, helium, carbon, and neon, e. hydrogen, helium, carbon, neon, and oxygen. 21. A planetary nebula is a. the ...
Background Information - Eu-Hou
... In order to plot a HR diagram, the temperature and luminosity of the stars need to be known. The simplest indication of a star’s temperature is its colour. A star’s colour is simply a measure of the amount of light from the star in one filter compared to another. The most common colour system is B-V ...
... In order to plot a HR diagram, the temperature and luminosity of the stars need to be known. The simplest indication of a star’s temperature is its colour. A star’s colour is simply a measure of the amount of light from the star in one filter compared to another. The most common colour system is B-V ...
solar system
... The Great Nebula (M42) in the constellation Orion, 1,600 light-years from the earth, consists of bright and dark masses of gas and dust where stars are in the process of being born. e. Ronald Royer/Science Source/Photo Researchers, Inc.[1] [1]"Orion Nebula," Microsoft® Encarta® Encyclopedia 2000. © ...
... The Great Nebula (M42) in the constellation Orion, 1,600 light-years from the earth, consists of bright and dark masses of gas and dust where stars are in the process of being born. e. Ronald Royer/Science Source/Photo Researchers, Inc.[1] [1]"Orion Nebula," Microsoft® Encarta® Encyclopedia 2000. © ...
Linking Asteroids and Meteorites through Reflectance
... • Main sequence stars are “young” stars • If a star is leaving the main sequence, it is at the end of its lifespan of burning hydrogen into helium ...
... • Main sequence stars are “young” stars • If a star is leaving the main sequence, it is at the end of its lifespan of burning hydrogen into helium ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.