(HR) Diagrams
... a. For instance, in the range of A type stars, how many A sub-types are there and what are their names? b. Write down the spectral class of the sub-type halfway between K and M. 6. Which is the hottest type of star, O, B, A, F, G, K or M? Circle the hottest type. 7. Which is the coldest type of star ...
... a. For instance, in the range of A type stars, how many A sub-types are there and what are their names? b. Write down the spectral class of the sub-type halfway between K and M. 6. Which is the hottest type of star, O, B, A, F, G, K or M? Circle the hottest type. 7. Which is the coldest type of star ...
Slides
... with f in erg/s/cm2/Hz. In this system the formalism on the previous page can be used but now with a reference spectrum that has F⌫ = const Finally the Hubble Space Telescope data are often quoted in ST magnitudes which are done with a reference spectrum that has F = const ...
... with f in erg/s/cm2/Hz. In this system the formalism on the previous page can be used but now with a reference spectrum that has F⌫ = const Finally the Hubble Space Telescope data are often quoted in ST magnitudes which are done with a reference spectrum that has F = const ...
I CAN SEE THE STARS IN YOUR EYES
... at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would take 4.2 years. “Hmmm…,” you think to yourself, “that might be an interesting fact to include i ...
... at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would take 4.2 years. “Hmmm…,” you think to yourself, “that might be an interesting fact to include i ...
Powerpoint Presentation (large file)
... 1. Why do astronomers think that stars evolve? 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the Sun? 5. When a star forms, why does it end up with only a fraction of the available matter ...
... 1. Why do astronomers think that stars evolve? 2. What kind of matter exists in the spaces between the stars? 3. In what kind of nebulae do new stars form? 4. What steps are involved in forming a star like the Sun? 5. When a star forms, why does it end up with only a fraction of the available matter ...
Early Observers (The Beginnings of Astronomy)
... Planets traveled in smaller circular paths as they traveled around the Earth (epicycles and deferents) Popular model of universe for 1,500 years. ...
... Planets traveled in smaller circular paths as they traveled around the Earth (epicycles and deferents) Popular model of universe for 1,500 years. ...
Astronomy and Humanism by Ray Thompson A. EARLY
... easily calculate its distance. What made this discovery so vitally significant was the fact that Cepheid variables could often be seen in distant galaxies. For the first time galactic distances could be obtained and it became clear just how enormous the universe was! This brings us to Edwin Hubble o ...
... easily calculate its distance. What made this discovery so vitally significant was the fact that Cepheid variables could often be seen in distant galaxies. For the first time galactic distances could be obtained and it became clear just how enormous the universe was! This brings us to Edwin Hubble o ...
Lab Document - University of Iowa Astronomy and Astrophysics
... (8) Now let’s try and find a “Deep Sky” object using the Pocket Sky Atlas. We will look at the object M13 in the constellation of Hercules. Using the Star Wheel and SC1 chart, find Hercules. Both the Star Wheel and the SC1 indicate where M13 is located. The Pocket Sky Atlas has a more detailed map o ...
... (8) Now let’s try and find a “Deep Sky” object using the Pocket Sky Atlas. We will look at the object M13 in the constellation of Hercules. Using the Star Wheel and SC1 chart, find Hercules. Both the Star Wheel and the SC1 indicate where M13 is located. The Pocket Sky Atlas has a more detailed map o ...
Homework Problems for Quiz 1 – AY 5 – Spring 2013
... 11. Star A has twice the trigonometric parallax angle and twice the luminosity of Star B. (Assume no dust toward either star) a) What are the relative distances of the two stars? Star A has twice the parallax angle so is at 1/2 the distance of Star B b) what are the relative brightnesses of the two ...
... 11. Star A has twice the trigonometric parallax angle and twice the luminosity of Star B. (Assume no dust toward either star) a) What are the relative distances of the two stars? Star A has twice the parallax angle so is at 1/2 the distance of Star B b) what are the relative brightnesses of the two ...
SE 1.0 - Edquest
... The width of a mitt was used by the Inuit peoples in the high Arctic to gauge the height of the Sun above the horizon. When it rose to one mitt-width high it meant … A. The days would get longer and warmer B. The nights would get colder and shorter C. Seal pups would be born in two lunar cycles D. T ...
... The width of a mitt was used by the Inuit peoples in the high Arctic to gauge the height of the Sun above the horizon. When it rose to one mitt-width high it meant … A. The days would get longer and warmer B. The nights would get colder and shorter C. Seal pups would be born in two lunar cycles D. T ...
October 2013
... and is typical of areas where new stars can form. Between the Scorpion and the Centaur are the Altar, the Level and the Wolf, while to the east of the Milky Way stretches a great expanse of sky with relatively few bright stars, dominated by birds and 'water constellations'. In the south these includ ...
... and is typical of areas where new stars can form. Between the Scorpion and the Centaur are the Altar, the Level and the Wolf, while to the east of the Milky Way stretches a great expanse of sky with relatively few bright stars, dominated by birds and 'water constellations'. In the south these includ ...
Document
... 1. You will be making your own H-R diagram using the graph paper provided in this packet. This is called semilogarithmic graph paper. The axes are a bit weird. Temperature is on the X axis. Absolute magnitude is on the Y axis. The Y axis ranges from “+17” at the bottom to “-7” at the top. Absolu ...
... 1. You will be making your own H-R diagram using the graph paper provided in this packet. This is called semilogarithmic graph paper. The axes are a bit weird. Temperature is on the X axis. Absolute magnitude is on the Y axis. The Y axis ranges from “+17” at the bottom to “-7” at the top. Absolu ...
Rex Space
... *For example a huge storm has lasted for hundreds of years on Jupiter. Next, smaller than some moons in our solar system Mercury is the planet closest to the sun. It looks very similar to our moon. *For example Mercury is the closest planet to our sun. Fact, Mercury has a core that is made from pure ...
... *For example a huge storm has lasted for hundreds of years on Jupiter. Next, smaller than some moons in our solar system Mercury is the planet closest to the sun. It looks very similar to our moon. *For example Mercury is the closest planet to our sun. Fact, Mercury has a core that is made from pure ...
Measuring Distance in our Universe. Due Tue 1 Dec 2009 Imagine
... minutes to get to the Sun from Earth. To get to the next nearest star, Proxima Centauri, it would take 4.2 years traveling at the speed of light. Distances on earth are often measured in kilometers but distances to the stars are so large that kilometers aren’t very practical units. Astronomers use t ...
... minutes to get to the Sun from Earth. To get to the next nearest star, Proxima Centauri, it would take 4.2 years traveling at the speed of light. Distances on earth are often measured in kilometers but distances to the stars are so large that kilometers aren’t very practical units. Astronomers use t ...
Constellations
... How stars would appear if they were all the same distance from earth. All stars place 32.6 LY from the sun Our sun abs. Mag = 4.8 Negative is brighter ...
... How stars would appear if they were all the same distance from earth. All stars place 32.6 LY from the sun Our sun abs. Mag = 4.8 Negative is brighter ...
Death of Stars - Astronomy @ Walton High School
... components of the HR diagram and relate these to stellar death. To describe the end-products of stars: white dwarfs (for solar-mass stars); neutron stars (for heavier stars) and black holes (for even heavier stars!). ...
... components of the HR diagram and relate these to stellar death. To describe the end-products of stars: white dwarfs (for solar-mass stars); neutron stars (for heavier stars) and black holes (for even heavier stars!). ...
The winter sky over Bosham
... mostly random groupings of stars that happen to appear together in the sky, the stars of Orion are almost all related, outlining one of the closest star-forming regions to Earth. The constellation contains two of the brightest stars in the sky, with Betelgeuse marking the top left ‘shoulder’ and Rig ...
... mostly random groupings of stars that happen to appear together in the sky, the stars of Orion are almost all related, outlining one of the closest star-forming regions to Earth. The constellation contains two of the brightest stars in the sky, with Betelgeuse marking the top left ‘shoulder’ and Rig ...
Hipparcos
Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993. It was the first space experiment devoted to precision astrometry, the accurate measurement of the positions of celestial objects on the sky. This permitted the accurate determination of proper motions and parallaxes of stars, allowing a determination of their distance and tangential velocity. When combined with radial-velocity measurements from spectroscopy, this pinpointed all six quantities needed to determine the motion of stars. The resulting Hipparcos Catalogue, a high-precision catalogue of more than 118,200 stars, was published in 1997. The lower-precision Tycho Catalogue of more than a million stars was published at the same time, while the enhanced Tycho-2 Catalogue of 2.5 million stars was published in 2000. Hipparcos ' follow-up mission, Gaia, was launched in 2013.The word ""Hipparcos"" is an acronym for High precision parallax collecting satellite and also a reference to the ancient Greek astronomer Hipparchus of Nicaea, who is noted for applications of trigonometry to astronomy and his discovery of the precession of the equinoxes.