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θ 1 Orionis C is seen as a double star (right inset) with VLTI near-infrared interferometry. Theta 1 Orionis C (θ 1 Orionis C) is a member of the Trapezium open cluster that lies within the Orion Nebula. The star C is the most massive of the four bright stars at the heart of the cluster.
In astronomy, the color index is a simple numerical expression that determines the color of an object, which in the case of a star gives its temperature. The lower the color index, the more blue (or hotter) the object is. Conversely, the larger the color index, the more red (or cooler) the object is.
Color–color diagrams are often used in infrared astronomy to study star forming regions. Stars form in clouds of dust. As the star continues to contract, a circumstellar disk of dust is formed, and this dust is heated by the star inside. The dust itself then begins to radiate as a blackbody, though one much cooler than the star.
On Wednesday, December 4, stargazers are in for a treat as the two brightest objects in the sky, Venus and the moon, will appear close together, according to Space.com.
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This star is the dominant member of a 5-million-year-old star-forming region known as the λ Orionis cluster, [25] or Collinder 69. The intense ultraviolet energy being radiated by this star is creating the Sh2-264 [ 26 ] H II region in the neighboring volume of space, which in turn is surrounded by an expanding ring of cool gas that has an age ...
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HD 48948 is a K-type main-sequence star located in the constellation Lynx, approximately 55 light years away, based on a parallax of 59.393 mas.At an apparent magnitude of 8.58, it is too faint to be seen with the naked eye.