standard candle


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standard candle

See distance determination.

standard candle

[′stan·dərd ′kand·əl]
References in periodicals archive ?
In reality, the Hubble Law coincides fairly well with standard candle observations until d approaches [R.
The standard candle method is used when the luminosity of a class of objects, such as Cepheid Variables, is well understood.
For measuring the Hubble constant, though, even more distant standard candles are needed, and that's a job for supernovas.
Said another way, a standard candle at a given redshift would appear brighter in a slowing universe than in a continually expanding one.
Candlepower is the luminous intensity of lamp or luminaire expressed in candles--a standard candle being the unit of luminous intensity.
Radiation from the Crab nebula supernova remnant is believed to be so constant that astronomers use it as a standard candle with which to measure the energetic radiation of other astronomical sources.
Candlepower is the luminous intensity of lamp or luminaire expressed in candles --a standard candle being the unit of luminous intensity.
The premiere standard candle remains a type of pulsating star known as a Cepheid variable.
Yellowish, pulsating stars known as Cepheid variables remain the favorite, and many say the most credible, standard candle for estimating the distance to relatively nearby galaxies.
If that is so, they can be used to determine cosmic distances by the simple optical law that the apparent brightness of such a standard candle is its intrinsic brightness divided by the square of the distance.
These standard candles are much sought-after by astronomers, as they are an excellent tool to reliably measure the distance to remote objects.

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