Lecture 13: The stars are suns
... Magnitude system was invented by Hipparchus (190-120 BC) – he ranked stars by their apparent brightness from ‘first magnitude’ (brightest) to ‘sixth magnitude’ (dimmest). Bright stars have low magnitudes (measure of faintness). A difference of 5 magnitudes corresponds to a factor of 100 in brightnes ...
... Magnitude system was invented by Hipparchus (190-120 BC) – he ranked stars by their apparent brightness from ‘first magnitude’ (brightest) to ‘sixth magnitude’ (dimmest). Bright stars have low magnitudes (measure of faintness). A difference of 5 magnitudes corresponds to a factor of 100 in brightnes ...
Small Wonders: Ursa Minor
... realize that the front/pointer stars of the Big Dipper (recognized the world over) point towards Polaris, many non astronomers who look up still manage to link the "little dipper" with M45 - the Pleiades. The true little dipper's origins are somewhat shrouded in mystery, but there's evidence that it ...
... realize that the front/pointer stars of the Big Dipper (recognized the world over) point towards Polaris, many non astronomers who look up still manage to link the "little dipper" with M45 - the Pleiades. The true little dipper's origins are somewhat shrouded in mystery, but there's evidence that it ...
May 2017 - Museums Wellington
... be one of the first objects to appear, visible in the north east shortly after the Sun has set. Just to the right of Jupiter is Spica, the brightest star in the constellation of Virgo, and below, just above the horizon is orange coloured Arcturus, the brightest star in the northern celestial hemisph ...
... be one of the first objects to appear, visible in the north east shortly after the Sun has set. Just to the right of Jupiter is Spica, the brightest star in the constellation of Virgo, and below, just above the horizon is orange coloured Arcturus, the brightest star in the northern celestial hemisph ...
Astronomy
... 6. You just got off a plane in an unknown location somewhere in the Northern Hemisphere. Once you locate Polaris in your sky, how can you use that to figure out your latitude? Your latitude will be the same as how high Polaris is above the northern horizon. We are at 40 degrees latitude and Polaris ...
... 6. You just got off a plane in an unknown location somewhere in the Northern Hemisphere. Once you locate Polaris in your sky, how can you use that to figure out your latitude? Your latitude will be the same as how high Polaris is above the northern horizon. We are at 40 degrees latitude and Polaris ...
Life Cycle of a Star
... hydrogen atoms to form helium atoms in their cores. • These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. ...
... hydrogen atoms to form helium atoms in their cores. • These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. ...
galaxies and stars - Valhalla High School
... faster it is moving. • It takes 2 million years for light from the Andromeda galaxy to reach earth. • Astronomers have classified most galaxies into three main categories: spiral, elliptical and irregular. ...
... faster it is moving. • It takes 2 million years for light from the Andromeda galaxy to reach earth. • Astronomers have classified most galaxies into three main categories: spiral, elliptical and irregular. ...
Stellar Evolution and the HR Diagram – Study Guide
... c. Which is brighter, the sun or a white dwarf? The Sun (but not as hot) d. Is Vega brighter than our sun? Yes e. Is Antares hotter than our sun? No, it’s a giant, class K or M 22. Stars that move off the main sequence first move to the _Giant_ region of the HR diagram. These stars are fusing __heli ...
... c. Which is brighter, the sun or a white dwarf? The Sun (but not as hot) d. Is Vega brighter than our sun? Yes e. Is Antares hotter than our sun? No, it’s a giant, class K or M 22. Stars that move off the main sequence first move to the _Giant_ region of the HR diagram. These stars are fusing __heli ...
calculated using stefan`s law
... • Most of the stars are concentrated in narrow band- called main sequence stars. • As one moves from O to M type stars mass, temperature and luminosity of the stars decrease in main sequence. • Stars spend most of their life span in regions e.g main sequence, giants, white dwarfs. • Super giants are ...
... • Most of the stars are concentrated in narrow band- called main sequence stars. • As one moves from O to M type stars mass, temperature and luminosity of the stars decrease in main sequence. • Stars spend most of their life span in regions e.g main sequence, giants, white dwarfs. • Super giants are ...
Life Cycle of a Star
... hydrogen atoms to form helium atoms in their cores. • These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. ...
... hydrogen atoms to form helium atoms in their cores. • These stars can range from about a tenth of the mass of the sun to up to 200 times as massive. ...
Name: ____________ Period: ______ STAR BIOGRAPHY Name of
... known, what life cycle it is in, and predict what will happen in the future with your star. (Include each Life Cycle Stage) ...
... known, what life cycle it is in, and predict what will happen in the future with your star. (Include each Life Cycle Stage) ...
Stars
... • As Earth rotates, Ursa Major, Ursa Minor, and other constellations in the northern sky circle around Polaris • Because of this, they are called circumpolar constellations. • It appears that the constellations complete one full circle in the sky in about 24 hr. as Earth rotates on its axis. ...
... • As Earth rotates, Ursa Major, Ursa Minor, and other constellations in the northern sky circle around Polaris • Because of this, they are called circumpolar constellations. • It appears that the constellations complete one full circle in the sky in about 24 hr. as Earth rotates on its axis. ...
1” “Sky-Notes” of the Open University Astronomy Club. October 2005
... 2.2 Double Stars/Star Clusters/Nebulae/Galaxies. ...
... 2.2 Double Stars/Star Clusters/Nebulae/Galaxies. ...
The Mighty Hunter in the Winter Sky By Shannon Jackson
... Five constellations are always in our northern sky. Other groupings appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other st ...
... Five constellations are always in our northern sky. Other groupings appear seasonally, and then disappear as they fall below the horizon. There are five constellations, however, which seem to circle Polaris (po LAR us), also known as the North Star. The North Star always stays put while the other st ...
Astro 1 & 100 Levine Homework Stars Name:____________________________
... Brightest ______ ______ ______ ______ ______ ______ Dimmest Or, all have the same luminosity ______________ 2. Rank these stars in order of apparent brightness, from brightest to dimmest: Brightest ______ ______ ______ ______ ______ ______ Dimmest Or, all have the same apparent brightness __________ ...
... Brightest ______ ______ ______ ______ ______ ______ Dimmest Or, all have the same luminosity ______________ 2. Rank these stars in order of apparent brightness, from brightest to dimmest: Brightest ______ ______ ______ ______ ______ ______ Dimmest Or, all have the same apparent brightness __________ ...
Hertzsprung-Russell (H-R) Diagram Hertzsprung-Russell Diagram March 16 −
... Stars: A-Aldebaran; B-Barnard’s Star; CCapella; D-Rigel What do you need to know about stars to answer the next 4 questions? Pick one 104 correct ans. a. b. c. d. e. ...
... Stars: A-Aldebaran; B-Barnard’s Star; CCapella; D-Rigel What do you need to know about stars to answer the next 4 questions? Pick one 104 correct ans. a. b. c. d. e. ...
characteristics of stars
... ABSOLUTE MAGNITUDE - the actual amount of light given off by a star at a standard distance ...
... ABSOLUTE MAGNITUDE - the actual amount of light given off by a star at a standard distance ...
Chapter 2 Knowing the Heavens
... 1. What role did astronomy play in ancient civilizations? 2. Are the stars that make up a constellation actually close to one other? 3. Are the same stars visible every night of the year? What is so special about the North Star? 4. Are the same stars visible from any location on Earth? 5. What cause ...
... 1. What role did astronomy play in ancient civilizations? 2. Are the stars that make up a constellation actually close to one other? 3. Are the same stars visible every night of the year? What is so special about the North Star? 4. Are the same stars visible from any location on Earth? 5. What cause ...
read in advance to speed your work
... stars in Orion (Table II). Plot the MV values (MV again is simply absolute magnitude, M, with the subscript indicating that the magnitude is measured in the visual part of the spectrum) against the spectral classification for the first 8 stars in Table II. Make carefully positioned round points just ...
... stars in Orion (Table II). Plot the MV values (MV again is simply absolute magnitude, M, with the subscript indicating that the magnitude is measured in the visual part of the spectrum) against the spectral classification for the first 8 stars in Table II. Make carefully positioned round points just ...
Stellar Evolution Slideshow
... Later in life, a star will eject the outer shell of Hydrogen, leaving the Helium behind in the core. This fast traveling Hydrogen gas is called a Planetary nebula ...
... Later in life, a star will eject the outer shell of Hydrogen, leaving the Helium behind in the core. This fast traveling Hydrogen gas is called a Planetary nebula ...
December 1, 2011 - Perry Local Schools
... 1. Place the small flashlight on a desk or table near the front of the room. 2. Place the large flashlight on a desk or table near the back of the room. 3. Gather at the front of the room so they can all see both flashlights easily. 4. Turn on both flashlights. 5. Darken the room. 6. Observe and co ...
... 1. Place the small flashlight on a desk or table near the front of the room. 2. Place the large flashlight on a desk or table near the back of the room. 3. Gather at the front of the room so they can all see both flashlights easily. 4. Turn on both flashlights. 5. Darken the room. 6. Observe and co ...
Stars and Galaxies
... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are double-star systems in which two stars revolve around e ...
... Many stars are found in multiple-star systems. Alpha Centauri is in a multiple star system. It is made up of three stars called a triple star system. Over half of the stars in the sky have at least one companion star. Most of these stars are double-star systems in which two stars revolve around e ...
White Dwarfs and the age of the Universe
... • if we know the temperature and luminosity of a white dwarf, we know its size • if we know temperature, luminosity, and size now, we know the rate at which it is cooling today ...
... • if we know the temperature and luminosity of a white dwarf, we know its size • if we know temperature, luminosity, and size now, we know the rate at which it is cooling today ...
File
... force of fusion is = to the inward pull of gravity. • When a star reaches equilibrium it will be found in the main sequence of the H-R diagram. • Stars spend most of their lives in equilibrium (main ...
... force of fusion is = to the inward pull of gravity. • When a star reaches equilibrium it will be found in the main sequence of the H-R diagram. • Stars spend most of their lives in equilibrium (main ...
Using Star Charts Introduction A Digression on Star Names
... Star charts are literally maps of the sky. We use them for a number of purposes, such as telling us what time of night certain stars and constellations will be visible, plotting the positions of the Sun, Moon, and planets against the background stars, and locating nonstellar objects such as nebulae ...
... Star charts are literally maps of the sky. We use them for a number of purposes, such as telling us what time of night certain stars and constellations will be visible, plotting the positions of the Sun, Moon, and planets against the background stars, and locating nonstellar objects such as nebulae ...
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.