Polaris – Distance to Pole
... There are just as many measurements and methods as there are astronomers, and all of them disagree. What is needed is a long term project with the aim of mapping the heavens conducted from a single location over a period of several years. 1563 - age 17 ...
... There are just as many measurements and methods as there are astronomers, and all of them disagree. What is needed is a long term project with the aim of mapping the heavens conducted from a single location over a period of several years. 1563 - age 17 ...
Star and Galaxies Chapter 13
... • Takes 8 minutes for light to reach earth • It is unusual in fact it is found as a single star (normally stars are in groups of 2 (binary ...
... • Takes 8 minutes for light to reach earth • It is unusual in fact it is found as a single star (normally stars are in groups of 2 (binary ...
GSC2.2 Calibration Details or What do all those little numbers mean?
... Build several decision trees & let them vote Classification categories star / nonstar / defect ...
... Build several decision trees & let them vote Classification categories star / nonstar / defect ...
Star and Galaxies Chapter 13 2013
... • Takes 8 minutes for light to reach earth • It is unusual in fact it is found as a single star (normally stars are in groups of 2 (binary ...
... • Takes 8 minutes for light to reach earth • It is unusual in fact it is found as a single star (normally stars are in groups of 2 (binary ...
Public Lecture - Size of the Universe
... • Astronomical Unit (AU) = 1.496 x1011 m – AU is the average Earth-Sun distance – Used to measure solar system distances ...
... • Astronomical Unit (AU) = 1.496 x1011 m – AU is the average Earth-Sun distance – Used to measure solar system distances ...
Basic Observations of the Night Sky
... • The Earth 'wobbles' like a top; this is known as precession. • It takes 26,000 years for the Earth to make one complete cycle – This means that Polaris was not always, nor will it remain, the North Star ...
... • The Earth 'wobbles' like a top; this is known as precession. • It takes 26,000 years for the Earth to make one complete cycle – This means that Polaris was not always, nor will it remain, the North Star ...
Group competition
... You are given a blank card with a movable ring, along with a clear strip with a centre circle. If the card has a suitable scale, the clear strip is attached as in the diagram below and the Pole Star is visible through the centre circle, then the position of the star Kochab (β UMi) on the inner edge ...
... You are given a blank card with a movable ring, along with a clear strip with a centre circle. If the card has a suitable scale, the clear strip is attached as in the diagram below and the Pole Star is visible through the centre circle, then the position of the star Kochab (β UMi) on the inner edge ...
Stars & Cosmology
... its energy output.Stars in the hydrogen-burning stage, including the Sun, lie along the main sequence, while red giants and white dwarfs represent subsequent stages of stellar life. ...
... its energy output.Stars in the hydrogen-burning stage, including the Sun, lie along the main sequence, while red giants and white dwarfs represent subsequent stages of stellar life. ...
Astronomy
... Ursa Major and Ursa Minor • Artemis, the moon goddess and goddess of the hunt, always had hunting companions with her when she went on the hunt. One such companion was Callisto, a beautiful young maiden. One day Zeus passed by a woodland cove and spied the sleeping Callisto. Zeus disguised himself ...
... Ursa Major and Ursa Minor • Artemis, the moon goddess and goddess of the hunt, always had hunting companions with her when she went on the hunt. One such companion was Callisto, a beautiful young maiden. One day Zeus passed by a woodland cove and spied the sleeping Callisto. Zeus disguised himself ...
The Life Cycle of Stars Webquest
... Purpose: In this web quest, you will 1. Learn how to identify stars by their magnitude, color, temperature, and spectral class. 2. Investigate the process of nuclear fusion explained by Einstein's famous equation E = mc2 and learn how mass in the form of hydrogen atoms is converted to helium and cau ...
... Purpose: In this web quest, you will 1. Learn how to identify stars by their magnitude, color, temperature, and spectral class. 2. Investigate the process of nuclear fusion explained by Einstein's famous equation E = mc2 and learn how mass in the form of hydrogen atoms is converted to helium and cau ...
Sep 2017 - What`s Out Tonight?
... all night and always outshines any star. Everyone enjoys its 4 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-focuse ...
... all night and always outshines any star. Everyone enjoys its 4 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-focuse ...
Slide 1
... the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can ionize hydrogen over a volume of space 1000 light years across. One example is the luminous H II region surrounding star cluster M ...
... the hydrogen lines are weak. Both HeI and HeII (singly ionized helium) are seen in the higher temperature examples. The radiation from O5 stars is so intense that it can ionize hydrogen over a volume of space 1000 light years across. One example is the luminous H II region surrounding star cluster M ...
Stars
... appear brighter than those that are farther away • Absolute Magnitude: big stars are brighter than small stars. This is the ACTUAL brightness of the star – If all the stars were lined up equi-distant from Earth, we would be able to compare their actual brightness ...
... appear brighter than those that are farther away • Absolute Magnitude: big stars are brighter than small stars. This is the ACTUAL brightness of the star – If all the stars were lined up equi-distant from Earth, we would be able to compare their actual brightness ...
parallax in arc seconds
... Proxima Centauri. It is a member of a triple star system called the Alpha Centauri ...
... Proxima Centauri. It is a member of a triple star system called the Alpha Centauri ...
Lecture02-ASTA01 - University of Toronto
... • Limitation 4: an apparent magnitude informs you only how bright the star is as seen from Earth. • It doesn’t reveal anything about a star’s true power output – because the star’s distance is not known! • There is an “absolute magnitude scale” where we assign magnitudes that the object would have i ...
... • Limitation 4: an apparent magnitude informs you only how bright the star is as seen from Earth. • It doesn’t reveal anything about a star’s true power output – because the star’s distance is not known! • There is an “absolute magnitude scale” where we assign magnitudes that the object would have i ...
Star`s ReadingStar`s Reading(es)
... trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much farther away than Proxima Centauri. Our sun and Proxima Centauri are only two of the stars that make up the Milky Way. The Milky Way is a giant flat struct ...
... trip! Yet the next nearest star, Proxima Centauri, is much farther away—a trip to Proxima Centauri would take 4.2 years! Most stars are much farther away than Proxima Centauri. Our sun and Proxima Centauri are only two of the stars that make up the Milky Way. The Milky Way is a giant flat struct ...
Astronomy Library wk 6.cwk (WP)
... We have seen how stellar spectra can be used to determine stellar composition and temperature. Here we will see how we can determine some other stellar properties: Luminosity: Energy emitted by a star per unit time. Radius of a star ...
... We have seen how stellar spectra can be used to determine stellar composition and temperature. Here we will see how we can determine some other stellar properties: Luminosity: Energy emitted by a star per unit time. Radius of a star ...
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.