Science news articles about 'cepheid variables'

  • Pulsating star mystery solved in rare alignment of Cepheid variable and another star

    ... the first double star where a pulsating Cepheid variable and another star pass in front ... in the double star system has allowed a measurement of the Cepheid mass with unprecedented accuracy. The new result ...
  • What do an Ethiopian King, a candle, and Minnesota have in common?

    ... relate to Cepheid variables! Before you tune out because it sounds like a hard concept to understand, bear ...
  • Exceptionally deep view of strange galaxy

    ... Laboratory, California). The team was using Hubble to search for Cepheid variable stars in NGC 4921 that could be used to measure the distance to the Coma Cluster and hence the expansion rate ...
  • To 300 million light years, and beyond -- a new way to measure cosmic distances

    ... , they also learned something new about how these stars evolve. Cepheid variables -- giant stars that pulse in brightness ... obey this relation. They are larger and brighter than the typical cepheid. In fact, they are larger and brighter than most stars; in this study ...
  • Pulsating star mystery solved

    ... theories predicting the masses of Cepheids is correct." Classical Cepheid Variables, usually called just ... the stars of the Large Magellanic Cloud. It contains a Cepheid variable star pulsating every 3 ...
  • A New class for Tau Scorpii

    ... , distinguished member of a certain type of stars. For example, Cepheid variables take their namesake from the periodic ... , although Eta Aquillae, another Cepheid, was recognized as a periodic variable with the same period just ...
  • The little Cepheid that stopped

    ... Hubble first discovered a Cepheid variable in the galaxy M31, the universe grew. Previously, many astronomers had held that the fuzzy “spiral nebulae ...
  • Cosmology standard candle not so standard after all

    ... consists of pulsating stars called Cepheid variables, or Cepheids for short. Measurements of the distances to these stars ... is Delta Cephei, which is the namesake for the entire class of Cepheids. It was discovered in 1784 in the constellation Cepheus, or the King ...
  • A picture-perfect pure-disc galaxy

    ... , dust clouds, and pulsating stars called Cepheid variables, which astronomers use as distance markers in the Universe ... than had been possible before. In the successful project, 69 Cepheid variables were observed in this galaxy alone. Multiple ...
  • NASA's Hubble rules out 1 alternative to dark energy

    ... of these cosmic yardsticks for relatively shorter distances are Cepheid variables, pulsating stars that dim and fade at rates that correspond to their intrinsic luminosity. But Cepheids are too dim to be found in very distant galaxies ...
  • Hubble views the star that changed the universe

    ... , like a lighthouse beacon, and identified it as V1, a Cepheid variable. This special type of star had already ... of 31.4 days, indicating the object was a Cepheid variable. The period yielded the star's intrinsic ...
  • Milky Way's Baby Stars Linked to Stellar Growth Spurt

    The unique relationship between age and the pulsing of Cepheid variable stars allowed astronomers to determine that the star formation in the Milky Way more than tripled a few million years ago.
  • AGNs as a new standard candle?

    ... your every day birthday cake. Until now a standard candle meant a Cepheid variable star – or more recently – a Type 1a supernova. But something new happens almost every ...
  • Recording A Century of Night Skies Through A Scanner Darkly

    ... plates shipped from telescopes around the world document the Beehive Cluster as it appeared in 1890, or Cepheid variable stars as they looked in 1908. The glass ...

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