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Catalogue · Sh2 · 1959

Sharpless Catalogue

A catalogue of HII regions — clouds of ionised hydrogen glowing around hot young stars — compiled by Stewart Sharpless. Its second edition (Sh2, 1959) lists 313 emission nebulae across the northern Milky Way, including many of the sky's great star-forming complexes. Objects carry an 'Sh2' number.

Highlights

  • 313 glowing HII regions of the northern Milky Way

Across the catalogue layer

Knowledge connections

Sources

The primary and reference sources this topic draws on.

  • IAUInternational Astronomical Union

    Official naming, definitions, constellation boundaries, and astronomical nomenclature.