Translation and analysis of words by artificial intelligence
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niacin$52589$ - translation to greek
![J band]]) [[light curve]] for U Carinae, adpated from Laney and Stobie (1992)<ref name="Laney"/>](https://commons.wikimedia.org/wiki/Special:FilePath/UCarLightCurve.png?width=200 "J band]]) [[light curve]] for U Carinae, adpated from Laney and Stobie (1992)<ref name=\"Laney\"/>")
Definition
Wikipedia
HD 95109 (U Carinae) is a Classical Cepheid variable, a type of variable star, in the constellation Carina. Its apparent magnitude is 6.86.
U Car is a δ Cepheid variable with a period of 38.7681 days. It was one of the earliest Cepheids to be discovered. It has also one of the longest periods, and hence is one of the most luminous in the class. There are still only a few Cepheids with longer periods, including RS Puppis, SV Vulpeculae, and the unusual S Vulpeculae.
The brightness variation in U Car is caused by fundamental mode pulsations. The radius and temperature both vary, with the radius changing by 42 R☉ during each cycle. The temperature variation causes the spectral type to vary between F6 and G7.
