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Orphan HII Regions Near Stephan's Quintet

A team of Brazilian and French astronomers led by C. Mendes de Oliveira has discovered four surprisingly metal-rich HII regions and associated clusters of hot young stars in an otherwise empty region of intergalactic space near the galaxy group called Stephan's Quintet.  This collection of interacting galaxies (which lies about 280 million light-years away from us) is spreading clouds of gas and newborn stars across space. The newly discovered HII regions lie more than 80,000 light-years away from the center of action. Their relative youth and lack of apparent

Celestial Beacon Sheds New Light on Stellar Nursery

En Español - Versión adaptada en Chile

A timely discovery by American amateur astronomer Jay McNeil, followed immediately by observations at the Gemini Observatory, has provided a rare glimpse into the slow, yet violent birth of a star about 1,500 light-years away. The resulting findings reveal some of the strongest stellar winds ever detected around an embryonic Sun-like star.

Gemini Probes Galaxy Evolution a Billion Years After the Big Bang

The GLARE (Gemini Lyman Alpha at Reionisation Era) team, an international group of astronomers using Gemini to study the early universe, has just discovered a surprisingly large number (three) very high redshift galaxies ( z = 5.83, 5.79 and 5.94) in a same region of the southern GOODS field. Two of the Lyman alpha emitters measured are the faintest of any previous spectroscopic study. The objects are red (i' - z') > 1.3 and the faintest one has a z' magnitude of 27.15. This finding suggests

Massive Old Star Reveals Secrets On Deathbed

Like a doctor trying to understand an elderly patient's sudden demise, astronomers have obtained the most detailed observations ever of an old but otherwise normal massive star just before and after its life ended in a spectacular supernova explosion.

Gemini South/PHOENIX Strikes Again

Verne Smith of the University of Texas El Paso led an international team of American, Canadian, Brazilian and Japanese astronomers to a detailed study of the physical properties of the recently discovered nearby brown dwarf companion to Epsilon Indi, the fifth brightest star of the southern hemisphere constellation Indus.