07 September: The Solar System in a Stellar Context
... Distance to Sun in terms of light travel time d=vt (like driving to Des Moines) t=d/v The fastest anything can travel is speed of light = c = 2.9979E+08 meters/sec Distance to Sun = 1 au = 1.496E+11 meters (see Appendix 1), so light travel time from Sun is t=d/c =1.496E+11/2.9979E+08 = t=499.02 sec ...
... Distance to Sun in terms of light travel time d=vt (like driving to Des Moines) t=d/v The fastest anything can travel is speed of light = c = 2.9979E+08 meters/sec Distance to Sun = 1 au = 1.496E+11 meters (see Appendix 1), so light travel time from Sun is t=d/c =1.496E+11/2.9979E+08 = t=499.02 sec ...
The Milky Way Galaxy
... Shapley’s model Globular clusters must orbit around the center of mass of the galaxy! Thus, assuming the clusters are distributed uniformly around the galaxy, he measured the 3D distribution of clusters (using Cepheid variables) and then assumed that the center of that distribution was where the cen ...
... Shapley’s model Globular clusters must orbit around the center of mass of the galaxy! Thus, assuming the clusters are distributed uniformly around the galaxy, he measured the 3D distribution of clusters (using Cepheid variables) and then assumed that the center of that distribution was where the cen ...
Astronomy Study Guide #2
... 05. What two parameters does the brightness of a star depend on? 06. What is the stellar spectral classification sequence? 07. What do studies of binary stars help us learn? 08. Solar granulation is evidence for what aspect of energy transport? 09. In traveling from the center of the sun to the top ...
... 05. What two parameters does the brightness of a star depend on? 06. What is the stellar spectral classification sequence? 07. What do studies of binary stars help us learn? 08. Solar granulation is evidence for what aspect of energy transport? 09. In traveling from the center of the sun to the top ...
Light and Telescopes
... • Catalogued positions of planets in Uraniborg and Prague • Working without telescope • Data ten times as accurate as before • Died at banquet binge drinking ...
... • Catalogued positions of planets in Uraniborg and Prague • Working without telescope • Data ten times as accurate as before • Died at banquet binge drinking ...
Set 1
... Using the IAU-approved celestial coordinates of the North Galactic pole (192.85948, 27.12825) and the Galactic longitude of the north celestial pole (123.932), calculate the adopted Galactic coordinates (l, b) of Sgr A* . If the Galactic center is 8.5 kpc away, calculate the distance discrepancy ...
... Using the IAU-approved celestial coordinates of the North Galactic pole (192.85948, 27.12825) and the Galactic longitude of the north celestial pole (123.932), calculate the adopted Galactic coordinates (l, b) of Sgr A* . If the Galactic center is 8.5 kpc away, calculate the distance discrepancy ...
Stars and the Sun
... – Apparent magnitude: as seen from Earth, lower (including negative) is brighter! – Absolute magnitude: if all stars were same distance from Earth, lower (including negative) is brighter! ...
... – Apparent magnitude: as seen from Earth, lower (including negative) is brighter! – Absolute magnitude: if all stars were same distance from Earth, lower (including negative) is brighter! ...
te acher`s guide te acher`s guide
... Stars asks the following five questions about our Sun and all of its shining counterparts. Space travelers Adi and Woops help viewers clearly answer each question using computer graphics and space footage. What are the signs of the zodiac? The signs of the zodiac are twelve different groups of stars ...
... Stars asks the following five questions about our Sun and all of its shining counterparts. Space travelers Adi and Woops help viewers clearly answer each question using computer graphics and space footage. What are the signs of the zodiac? The signs of the zodiac are twelve different groups of stars ...
life and death of a high mass star 2
... AFTER THAT, THEY LOSE THEIR MASS AND HEAT AND BEGIN TO DIE. THIS PROCESS TAKES BILLIONS AND BILLIONS OF YEARS. ...
... AFTER THAT, THEY LOSE THEIR MASS AND HEAT AND BEGIN TO DIE. THIS PROCESS TAKES BILLIONS AND BILLIONS OF YEARS. ...
The Hertzsprung-Russell Diagram
... About half the stars in the sky have stellar companions, bound together by gravity and in orbit around each other. Some of these can be seen by the eye or in a telescope, others are too close to be resolved. You can see stars together, but they must also share a common motion and be at the same dis ...
... About half the stars in the sky have stellar companions, bound together by gravity and in orbit around each other. Some of these can be seen by the eye or in a telescope, others are too close to be resolved. You can see stars together, but they must also share a common motion and be at the same dis ...
File
... Sky appears tilted at an angle equal to our latitude. Stars appear to move in arcs across the sky that are not perpendicular to horizon. ...
... Sky appears tilted at an angle equal to our latitude. Stars appear to move in arcs across the sky that are not perpendicular to horizon. ...
From the Everett and Seattle Astronomical Societies, this is IT
... gamma ray repeater are vivid examples of an important emerging fact about stellar evolution: All stars in a single cluster don't form at the same time, he said. "We're seeing what I think is going to become a textbook example of the fact that stars aren't all born in an instant, even in a small clus ...
... gamma ray repeater are vivid examples of an important emerging fact about stellar evolution: All stars in a single cluster don't form at the same time, he said. "We're seeing what I think is going to become a textbook example of the fact that stars aren't all born in an instant, even in a small clus ...
chapter-30-pp
... star would have at a distance of 32.6 lightyears from Earth---in other words, if all stars were the same distance from Earth this is how they would look. So, the brighter a star actually is, the lower it’s number of absolute magnitude. ...
... star would have at a distance of 32.6 lightyears from Earth---in other words, if all stars were the same distance from Earth this is how they would look. So, the brighter a star actually is, the lower it’s number of absolute magnitude. ...
PowerPoint - Earth Science with Mrs. Wilson
... When a star forms it begins its “life.” When a star runs out of fuel, it dies. So a star has a life similar to a battery that cannot be recharged. When the battery runs out of energy, it is finished. Our sun will run out of energy and it will be finished too. But this will not happen for another 5 ...
... When a star forms it begins its “life.” When a star runs out of fuel, it dies. So a star has a life similar to a battery that cannot be recharged. When the battery runs out of energy, it is finished. Our sun will run out of energy and it will be finished too. But this will not happen for another 5 ...
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.