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What is another word for the North Star?
The name of the north star is Polaris. As the brightest star in the constellation of Ursa Minor it is also called alpha Ursae Minoris. It is actually a multiple star comprised of Polaris Aa, Polaris Ab and Polaris B.
Which star is hotter in an eclipsing binary system?
Generally the main star as this will have the most mass. However, temperature is not necessarily based on mass, so a secondary unit, could well be hotter but less massive.
Why is Neptune closer to Earth than Polaris?
because polaris a star
What well known star is polaris?
its otherwise known as the 'North Star' as it more or less hangs in the same spot regardless of the time of day. You can use it to find north.
What star was once a northern polar star?
The North Star, a.k.a. Polaris.The North Star, a.k.a. Polaris.The North Star, a.k.a. Polaris.The North Star, a.k.a. Polaris.
Would the sun be more luminous if it were hotter?
Yes luminous actually for a star to get hotter.
Is Mercury a star?
No. The definition of a star is "any of the large, self-luminous, heavenly bodies, as the sun, Polaris, etc." Mercury is a planet that orbits a star - our sun.
How can a cool star be more luminous than a hot star?
Luminosity is related to temperature and distance.A cool and thus less luminous star would be brighter than a more luminous star at a greater distance.Our Sun is a relatively cool star in comparison to say Rigel, but because it is closer it appears more luminous and brighter.
How is the star Polaris compared to that of the star Sirius?
Sirius is the brightest star...Polaris is bigger then Sirius, Polaris is 360 to 820 light years away from earth, and Sirius is only 8.6 light years away. The Sirius star is known as the dog constalation, The polaris star is found at the tip and corner of the big dipper and the little dipper
Why does an expanding giant star become more luminous?
Less energy is produced in the interior
Where is Polaris in its life cycle?
The present star is in the late stages its life as Polaris. In the Roman Era, the North Pole was more or less equidistant from Kochab and the present Pole Star. In the year 3000, Alrai will be closer to the Celestial Pole and the present star will cease to be Polaris.
What is another word for the North Star?
The name of the north star is Polaris. As the brightest star in the constellation of Ursa Minor it is also called alpha Ursae Minoris. It is actually a multiple star comprised of Polaris Aa, Polaris Ab and Polaris B.
The star have light?
because the star is luminous.
What happens to the magnitude of a star in the main sequence as its temperature decreases?
The cooler a star is, the less luminous it is. That's assuming the star stays about the same size. "Red giant" stars for example are relatively cool, but very luminous because of their size. However, red giants are not main sequence stars. For a main sequence star, a lower temperature means it is LESS bright. That means it has a higher number on the "magnitude" scale. So the answer is: "the magnitude increases" Our Sun is putting out more energy than it did a billion years ago. It is expected to get even hotter before it leaves the main sequence and becomes a red giant.
What is other name for the star polaris?
The north star is polaris's other name.
What galaxy is polaris?
Polaris is not a galaxy, it is a star.
How does the HR diagram explain why some smaller cooler stars are brighter than larger hotter stars?
In terms of absolute magnitude, a larger hotter star will necessarily be more luminous than a smaller cooler star. However, if a smaller cooler star is much closer to us than a larger hotter star, it may appear to be brighter. None of this has anything to do with the HR diagram.
