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8 matches found for "H-alpha emission"

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Star-birth myth 'busted'

When a cloud of interstellar gas collapses to form stars, the stars range from massive to minute.Since the 1950s astronomers have thought that in a family of new-born stars the ratio of massiv...

Physics and Astronomy |

APEX reveals glowing stellar nurseries

As this ionised region expands into space, the associated shock wave sweeps up a layer of the surrounding cold interstellar gas and cosmic dust. This layer becomes unstable and collapses under its own...

Physics and Astronomy |

More star births than astronomers have calculated

The “birth rate” for stars is certainly not easy to determine. Distances in the universe are far too great for astronomers to be able to count all the newly formed celestial bodies with the aid of a t...

Physics and Astronomy |

Largest Digital Survey of the Milky Way released

Conducted by looking at light emitted by hydrogen ions, using the Isaac Newton Telescope on La Palma, the survey contains stunning red images of nebulae and stars. The data is described in a paper sub...

Physics and Astronomy |

Red Sky at Night – Astronomers Delight

A collaboration of over 50 astronomers, The IPHAS consortium, led from the UK, with partners in Europe, USA, Australia, has released today (10th December 2007) the first comprehensive optical digital ...

Physics and Astronomy |

Roses In The Southern Sky

The Wide-Field-Imager at La Silla Unveils Intricate Structures Illuminated by Hot Stars The two best known satellite galaxies of the Milky Way, the Magellanic Clouds, are locat...

Physics and Astronomy |

Isolated Star-Forming Cloud Discovered in Intracluster Space

Subaru and VLT Join Forces in New Study of Virgo Galaxy Cluster At a distance of some 50 million light-years, the Virgo Cluster is the nearest galaxy cluster. It is located in t...

Physics and Astronomy |

Disks around Failed Stars - a Question of Age

First Ground-Based Mid-Infrared Observations of Brown Dwarfs [1] A team of European astronomers [2] have observed eight Brown Dwarfs, i.e., small and faint objects also known...

Physics and Astronomy |

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