Examples of using Cepheids in English and their translations into Greek
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Colloquial
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Medicine
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Ecclesiastic
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Official/political
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Computer
Riess's team had to gauge the apparent tiny wobble of the Cepheids due to Earth's motion around the sun.
In 1913, Ejnar Hertzsprung attempted to find distances to 13 Cepheids using the motion through the sky.
In the 1940s, Walter Baade recognized that Cepheids actually consist of at least two separate populations(classical Cepheids& Type II Cepheids). .
Classical Cepheids are younger and more massive population I stars, whereas type II Cepheids are older fainter Population II stars.
In 1913, Ejnar Hertzsprung attempted to find distances to 13 Cepheids using the motion through the sky.
RR Lyrae variables are much more common than Cepheids, but also much less luminous.
The luminosity of type II Cepheids is, on average, less than classical Cepheids by about 1.5 magnitudes(but still brighter than RR Lyrae stars).
Cepheids are a special class of star whose day-to-month-long pulsation depends on their true brightness.
Type II Cepheids are used to fix the distance to the galactic center of the Milky Way,
Cepheids[1] are pulsating stars that have been used as distance indicators since almost a hundred years.
In 1915, Harlow Shapley used Cepheids to place initial constraints on the size
Classical Cepheids include: Eta Aquilae,
Classical Cepheids(also known as Population I Cepheids,
pulsation period established Cepheids as important indicators of cosmic benchmarks for scaling galactic and extragalactic distances.
If there's an error in parallax, Cepheids, or supernovae, the expansion rate may truly be on the low end: 67 km/s/Mpc.
Classical Cepheids are used to determine distances to galaxies within the Local Group
But astronomers have always thought that ULP cepheids, which brighten and dim over the course of a few months
Classical Cepheids are young stars that are four to 20 times more massive than our Sun
Type II Cepheids(also termed Population II Cepheids)
But the first step is to measure the distances to Cepheids independent of their brightness,