Explanation: What is the cause of this unusual parabolic structure? This illuminated cavity, known as LDN 1471, was created by a newly forming star, seen as the bright source at the peak of the parabola. This protostar is experiencing a stellar outflow which is then interacting with the surrounding material in the Perseus Molecular Cloud, causing it to brighten. We see only one side of the cavity -- the other side is hidden by dark dust. The parabolic shape is caused by the widening of the stellar-wind blown cavity over time. Two additional structures can also be seen either side of the protostar; these are known as Herbig-Haro objects, again caused by the interaction of the outflow with the surrounding material. What causes the striations on the cavity walls, though, remains unknown. The featured image was taken by NASA and ESAБs Hubble Space Telescope after an original detection by the Spitzer Space Telescope.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
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NASA Official: Jay Norris. Specific rights apply.
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& Michigan Tech. U.

Публикации с ключевыми словами: stellar wind - звездный ветер Публикации со словами: stellar wind - звездный ветер
См. также: Шарплесс 308: туманность Голова Дельфина Кольцевая туманность вокруг WR 134 Кольцевая туманность WR 134 Шарплесс 2-308: туманность Дельфин Звезда Вольфа-Райе WR 124 Сформированная звездным ветром туманность RCW 58 Шарплесс 308: туманность Дельфин Все публикации на ту же тему >>