variable
2
8.3
- noun
- /ˈvɛrɪbəl/
- Specialized
:
estrella variable
- The astronomer studied the light fluctuations of a variable star to understand its behavior.
- Cepheid variables
- eclipsing variables
- cataclysmic variables
The problem though, is actually isolating the light that is just from the separate variable from other stars around it.
- The problem though, is actually isolating the light that is just from the separate variable from other stars around it.
- They were in the Milky Way and that gave you a candle, a standard candle to work with the Cepheid variables.
- However, there is a very specific type of star that we can get accurate distances for, and they're called Cephid variables.
Examples
-
And they're called variable stars because, Chuck, their intensity raises and lowers.
-
His work on the spatial distribution of Cepheid variables was critical in calibrating their absolute magnitudes for use as distance indicators.
Academic text (2005) -
And she her job was to look for variable stars.
-
And he realized, oh, this is a variable star.
-
Many hundreds of these variables have been discovered since that time, and not only in our galaxy.
Academic text (1990) -
And so you end up with this pulsing variable star.
-
It's the third discovered variable star in the constellation Corona Borealis.
-
In our galaxy, globular clusters contain a few Cepheid variables.
Academic text (1993) -
In 1923, Hubble found two faint variables in M31 that were clearly not novae.
Academic text (1993) -
For clusters farther out—too remote to spot any variables—he resorted to using the brightest stars as distance markers.
Academic text (2010)
Synonyms
2
6.1
A star that gets brighter and dimmer over time when seen from Earth
Compounds
- Specialized
2
5.3
A value measured in an experiment that changes when you change something else
- Specialized
2
6.8
A number that can have different values by chance, with a known chance for each value
- Specialized
1
4.6
A letter or sign in an equation that stands for a value you do not know
- Specialized
1
8.4
An unseen thing that changes the results of an experiment or study
- Specialized
A number that takes different values by chance in statistics to show random results
- Specialized
A condition or factor that people change on purpose to see effects
- Specialized
Movement where speed changes by different amounts over time
- Specialized
A number that can take different values by chance, for example a dice roll outcome
- Specialized
A type of concrete that has different weight by adding air or light pieces like clay and cork
- Specialized
A part of a plane with blades you can angle to work better at different speeds
How Changing
Surface Forms
Etymology
Variable for a star uses the same Latin root vari- meaning 'change', the same root you see in vary. A variable star is called that because its light or brightness 'changes' over time.