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Ou4

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description Ou4 Overview

Ou4 represents a significant bipolar emission nebula situated within the Sh2-129 star formation region of the Cepheus constellation. This outflow, first observed in 2011 by amateur astronomer Nicolas Outters, is notable for its distinct twin jets extending outwards from a central source. Astronomers study Ou4 to understand processes involved in young stellar object evolution and the dynamics of material ejected during such events. It’s particularly relevant for researchers investigating star formation and related phenomena.

help Ou4 FAQ

Who discovered the Ou4 nebula?

The Ou4 nebula was discovered in 2011 by amateur French astronomer Nicolas Outters. His remarkable deep-sky astrophotography revealed this highly faint structure, proving that dedicated amateurs can still make significant astronomical discoveries.

Where is the Ou4 nebula located in the night sky?

Ou4 is situated within the Sh2-129 star formation region, located in the constellation Cepheus. It appears as a massive, distinct outflow of gas in the deeper background of the surrounding red emission nebula.

What is the visual nickname of the Ou4 nebula?

Ou4 is widely known among astronomers as the Giant Squid Nebula. This nickname comes from its distinct bipolar outflow, which resembles the long tentacles of a squid extending outward into space.

What causes the Ou4 nebula to glow?

Ou4 is an emission nebula, meaning it glows because highly energized gas is emitting light. Specifically, the striking teal glow of Ou4 is caused by the emission of ionized oxygen atoms within the nebula's twin jets.

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