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What has the author Ida Barney written?

Ida Barney has written: 'Catalogue of the positions and proper motions of 1904 stars' -- subject(s): Stars, Proper motion, Catalogs


Does the Doppler shift of a Stars proper motion and its distance give us its space velocity?

True


What fundamental principle did Shapely use to calibrate the period luminosity relationship for Cepheid variable stars?

Objects with large proper motion tend to be closer than objects with small proper motion. /\


What has the author Jermain Gildersleeve Porter written?

Jermain Gildersleeve Porter has written: 'The stars in song and legend' 'Catalogue of proper motion stars' -- subject(s): Catalogs, Proper motion, Stars


What has the author Anders Reiz written?

Anders Reiz has written: 'Proper motions of 5959 faint AG stars' -- subject(s): Proper motion, Stars 'A study of external galaxies, with special regard to the distribution problem' -- subject(s): Distribution, Nebulae, Stars


What has the author Herman Albertus Weersma written?

Herman Albertus Weersma has written: 'A determination of the apex of the solar motion according to the method of Bravais' -- subject(s): Proper motion, Solar system, Motion in space, Stars


How do astronomers study the motion of stars, particularly when observing a line of stars moving in a straight line?

Astronomers study the motion of stars by observing their positions over time. When observing a line of stars moving in a straight line, astronomers track the stars' positions and measure their velocities to understand their motion.


Compare the apparent motion of star to the actual motion of stars?

The actual motion of stars is very hard to see because stars are very far away.


What did edmond halley discover about space?

he discovered the motion of stars he discovered the motion of stars


What are three types of actual motion that stars may have?

Proper motion: The apparent movement of a star across the sky due to its actual motion through space. Radial motion: Motion of a star toward or away from an observer, causing a shift in its spectral lines due to the Doppler effect. Orbital motion: Stars in binary or multiple star systems can exhibit motion around a common center of mass due to gravitational interactions.


Do stars change p0sition?

Yes, every star is moving. We call the actual movement of a star "proper motion", to distinguish it from the "apparent motion" of the stars rising and setting. This is because the "apparent motion" is caused by the Earth spinning and us going around with it. However, the "proper motion" of most stars is so small, and the stars themselves are so far away, that with only a few exceptions no person could notice any change over the course of a lifetime. One of the few exceptions is Bernard's Star, which is not only moving quite fast, it's also fairly close (as stars go). If you were to watch it very carefully over the course of 50 or 60 years, you might be able to notice the change in position.


What causes the diurnal motion of stars?

The diurnal motion of stars is caused by the rotation of the Earth on its axis. As the Earth rotates, it creates the illusion that the stars are moving across the sky from east to west. This motion is responsible for the daily rise and set of stars in the sky.