NGC 3766

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Open star cluster
NGC 3766
Photo of the MPG / ESO 2.2 m telescope
Photo of the MPG / ESO 2.2 m telescope
AladinLite
Constellation centaur
Position
equinox : J2000.0
Right ascension 11 h 36 m 14.4 s
declination -61 ° 36 ′ 19 ″
Appearance

classification I1p
Brightness  (visual) 5.3 mag
Angular expansion 15.0
Physical data

distance  5700 ly
(1745 pc )
Age approx. 20 million years
history
Discovered by Nicolas Louis de Lacaille
Discovery time 1751
Catalog names
 NGC  3766 • C 1133-613 • OCl 860 •  Mel  107 •  Cr  248 • Lund 591 •  ESO  129-SC027 •  GC  2468 •  h  3352 •

NGC 3766 is an open star cluster in the constellation Centaur . The star cluster has a diameter of 15 arc minutes and a magnitude of 5.3 mag. It is about 5700 light years from Earth . It was discovered by Nicolas Louis de Lacaille in 1751 .

In a study published in Astronomy and Astrophysics with seven years of observation of more than 3000 stars with the help of the Leonhard Euler telescope in Chile, 36 stars were discovered in the star cluster that seem to belong to a class of variable stars that have not yet been described are about 20 million years young. Their brightness fluctuates only slightly (0.1 percent in two to 20 hours), but it cannot be explained with the familiar star models.

Web links

Individual evidence

  1. ↑ NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c SEDS : NGC 3766
  3. ↑ WEBDA page on NGC 3766
  4. ↑ Seligman
  5. ↑ Die Welt : "Fascinating Suns, 20 Million Years Young" (June 12, 2013)