Sh2-132 is a large emission nebula in the constellation Cepheus. It is located on the southern edge of the constellation, a short distance from the border with the Lizard, along the plane of the Milky Way; The most suitable period for its observation in the evening sky falls between the months of July and December and is greatly facilitated for observatories located in the regions of the Earth's northern hemisphere. Sh2-132 is located at a distance of almost 3200 parsecs (almost 10400 light years), thus placing itself within the Perseus Arm, in the region of Cepheus OB1, a large and bright OB association. The stars responsible for the ionization of its gas are very hot and massive; in particular, two Wolf-Rayet stars have been identified, known by the acronyms HD 211564 and HD 211853 (the latter also having the abbreviation WR 153), as well as a star of spectral class O8.5V and a dozen stars of class B. Around the class O star and one of the Wolf-Rayet stars there is a bubble clearly visible in the radio wave band, identified by the acronym Shell B, probably originating from the stellar wind of the two massive stars. A similar but smaller structure, Shell A, houses a K-class star near its center. It is believed that chain star formation processes took place in the nebula in the past; Currently, these processes seem to be suspended, since there is no trace of recent activity. Nine sources of infrared radiation and a maser with H2O emissions have been identified in the direction of the nebula.
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