Sh2-132 Lion Nebula (Jens Andersen Dolmer)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep)

Sh2-132 Lion Nebula, Jens Andersen Dolmer

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Sh2-132 Lion Nebula

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Sh2-132 Lion Nebula

Sh2-132 is an faint emission nebula located in the constellation of Cepheus. It can be found on the southern edge of the constellation, near the border with Lizard, along the plane of the Milky Way. The best time for observing is between July and December, and it is particularly easy to observe for observers in the northern hemisphere. Sh2-132 is located at a distance of almost 3200 parsecs (about 10400 light-years), placing it within the Perseus Arm, in the region of Cepheus OB1, a large and bright OB association. The stars responsible for ionizing its gases are very hot and massive, in particular, two Wolf-Rayet stars with the codes HD 211564 and HD 211853 (the latter having also the code WR 153), in addition to a star of spectral class O8.5V and about ten B-class stars have been identified. Around the O-class star and one of the Wolf-Rayet stars, an easily visible bubble in the radio wave band extends and is identified as Shell B, probably originating from the stellar wind of the two massive stars. A similar structure, but smaller in size, Shell A, houses a K-class star near its center.

(source: Sky&Telescope)

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