Devika kamath Institute of Astronomy, KU. Leuven, Belgium
... The observationally estimated post-RGB birthrate is much higher than the theoretically predicted birthrate ...
... The observationally estimated post-RGB birthrate is much higher than the theoretically predicted birthrate ...
Constellations - Sierra Star Gazers
... NGC 869 & 884, popularly known as the Double Cluster, are a pair of open star clusters situated about 7,300 light years away. With visual magnitudes of 5.3 and 6.1 respectively, the pair was labeled as Caldwell 14 by Sir Patrick Moore, but somehow missed a Messier designation. While either cluster c ...
... NGC 869 & 884, popularly known as the Double Cluster, are a pair of open star clusters situated about 7,300 light years away. With visual magnitudes of 5.3 and 6.1 respectively, the pair was labeled as Caldwell 14 by Sir Patrick Moore, but somehow missed a Messier designation. While either cluster c ...
Astronomy Final Study Guide – Name: **This will be the biggest test
... 17. Moon’s phases – be able to name/draw the phases in order. 18. Be able to draw lines in a parallax diagram and show what the stars would look like from the Earth. 19. Know the life cycle of a star diagram and be able to put the stages in order and label each stage. ...
... 17. Moon’s phases – be able to name/draw the phases in order. 18. Be able to draw lines in a parallax diagram and show what the stars would look like from the Earth. 19. Know the life cycle of a star diagram and be able to put the stages in order and label each stage. ...
Lecture 12
... If stars are too far away, the parallax can be too small to measure accurately. The smallest parallax measurable from the ground is about 0.01-arcsec • Measure distances out to ~100 pc • But, only a few hundred stars this ...
... If stars are too far away, the parallax can be too small to measure accurately. The smallest parallax measurable from the ground is about 0.01-arcsec • Measure distances out to ~100 pc • But, only a few hundred stars this ...
6-Where to Survey - The Challenger Learning Center
... more stars than others or observe parts that are less dense? • Should you observe the parts of the galactic plane that are closer or further away? ...
... more stars than others or observe parts that are less dense? • Should you observe the parts of the galactic plane that are closer or further away? ...
Good Vibrations and Stellar Pulsations - Physics
... to the Small Magellanic Cloud was 33,000 light years. This was the greatest distance ever determined for an astronomical object. In 1917, Harlow Shapley used Hertzsprung’s calibration of the period-luminosity relation to determine the distance to the globular clusters (some of which contain Cepheids ...
... to the Small Magellanic Cloud was 33,000 light years. This was the greatest distance ever determined for an astronomical object. In 1917, Harlow Shapley used Hertzsprung’s calibration of the period-luminosity relation to determine the distance to the globular clusters (some of which contain Cepheids ...
Lab 8: Stellar Classification and the H
... As early as the beginning of the 19th century, scientists have studied absorption spectra in an effort to classify stars. At first, spectra were divided into groups by general appearance; however, in the 1930’s and 1940’s, astronomers realized that spectral type was mainly determined by temperature ...
... As early as the beginning of the 19th century, scientists have studied absorption spectra in an effort to classify stars. At first, spectra were divided into groups by general appearance; however, in the 1930’s and 1940’s, astronomers realized that spectral type was mainly determined by temperature ...
Project Packet - Montville.net
... 1. To determine the star temperature go to this link: Star temperatures by Spectral Class http://www.uni.edu/morgans/astro/course/Notes/section2/spectraltemps.html 2. On this site, find the Star luminosity, Roman numeral V, III, or I. 3. Then look at the spectral type O, B, A, F, G, K, or M and numb ...
... 1. To determine the star temperature go to this link: Star temperatures by Spectral Class http://www.uni.edu/morgans/astro/course/Notes/section2/spectraltemps.html 2. On this site, find the Star luminosity, Roman numeral V, III, or I. 3. Then look at the spectral type O, B, A, F, G, K, or M and numb ...
powerpoints - Georgia Southern University Astrophysics
... Doppler Shift Lecture Tutorial • Complete this exercise in groups of 2 to 3. • This is designed to be completed while you are discussing with other people. • This is not designed to be completed on your own. ...
... Doppler Shift Lecture Tutorial • Complete this exercise in groups of 2 to 3. • This is designed to be completed while you are discussing with other people. • This is not designed to be completed on your own. ...
Slide 1
... • As they ‘fall’ inwards, they move faster (gravitational potential energy is being converted to kinetic energy) • The particles collide with each other, sharing their energy • The fastest particles are at the centre of the cloud (they have fallen the furthest), and fast-moving particles mean a high ...
... • As they ‘fall’ inwards, they move faster (gravitational potential energy is being converted to kinetic energy) • The particles collide with each other, sharing their energy • The fastest particles are at the centre of the cloud (they have fallen the furthest), and fast-moving particles mean a high ...
01.05.10 Centuries-Old Star Mystery Coming to a Close For almost
... watched with their own eyes as it seemed to disappear into the night sky, slowly fading before coming back to life again. Today, as another dimming of the system is underway, mysteries about the star persist. Though astronomers know that Epsilon Aurigae is eclipsed by a dark companion object every 2 ...
... watched with their own eyes as it seemed to disappear into the night sky, slowly fading before coming back to life again. Today, as another dimming of the system is underway, mysteries about the star persist. Though astronomers know that Epsilon Aurigae is eclipsed by a dark companion object every 2 ...
How We Know the Earth Revolves Activity
... How do scientists know that the Earth actually orbits (revolves about) the sun? Have you ever thought about this? For thousands of years it was thought that the Earth was at the center of the universe and that everything moved around the Earth at different rates. Today, scientists know that the Eart ...
... How do scientists know that the Earth actually orbits (revolves about) the sun? Have you ever thought about this? For thousands of years it was thought that the Earth was at the center of the universe and that everything moved around the Earth at different rates. Today, scientists know that the Eart ...
Planisphere Exercise
... In what direction does the celestial equator appear to “rise” and “set” as the night progresses? Do these directions ever change? Turn the star wheel to find out. ...
... In what direction does the celestial equator appear to “rise” and “set” as the night progresses? Do these directions ever change? Turn the star wheel to find out. ...
Project 4: The HR diagram. Open clusters
... with published values can be identified on your images. There is a great resource to help with this on the web: http://www.univie.ac.at/webda/Welcome.html http://www.univie.ac.at/webda/cgi-bin/ocl_page.cgi?dirname=ngc7654 This site has collected almost all the available data on open clusters and you ...
... with published values can be identified on your images. There is a great resource to help with this on the web: http://www.univie.ac.at/webda/Welcome.html http://www.univie.ac.at/webda/cgi-bin/ocl_page.cgi?dirname=ngc7654 This site has collected almost all the available data on open clusters and you ...
Astronomy (stars, galaxies and the Universe)
... stars and to understand how stars change over time As the absolute magnitude of main sequence stars increases, the temperature increases as well ...
... stars and to understand how stars change over time As the absolute magnitude of main sequence stars increases, the temperature increases as well ...
P10263v1.2 Lab 5 Text
... If a star doesn’t have all three of these pieces of information, then ignore it and select a different star. These stars may have distances listed, but in many cases those distances are automatically generated from a catalog that is rather out-of-date and unreliable, so we will ignore those. Step 2 ...
... If a star doesn’t have all three of these pieces of information, then ignore it and select a different star. These stars may have distances listed, but in many cases those distances are automatically generated from a catalog that is rather out-of-date and unreliable, so we will ignore those. Step 2 ...
2010_02_04 LP08 Our Galactic Home
... The Lay of the Last Minstrel Sir Walter Scott Breathes there the man with soul so dead Who never to himself hath said, This is my own, my native land! Whose heart hath ne'er within him burned, As home his footsteps he hath turned From wandering on a foreign strand! If such there breathe, go, mark h ...
... The Lay of the Last Minstrel Sir Walter Scott Breathes there the man with soul so dead Who never to himself hath said, This is my own, my native land! Whose heart hath ne'er within him burned, As home his footsteps he hath turned From wandering on a foreign strand! If such there breathe, go, mark h ...
here - ScienceA2Z.com
... Spatial scale provides a "shorthand" form for discussing relative lengths, areas, distances and sizes. A microclimate, for instance, is one that might occur in a mountain valley or near a lakeshore, whereas a megatrend is one which involves the whole planet. It is important to realize that these div ...
... Spatial scale provides a "shorthand" form for discussing relative lengths, areas, distances and sizes. A microclimate, for instance, is one that might occur in a mountain valley or near a lakeshore, whereas a megatrend is one which involves the whole planet. It is important to realize that these div ...
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.