page_title: Intermediate spiral galaxy
hierarchical_section_title: Intermediate spiral galaxy
caption_attribution_description: English: Hubble - de Vaucouleurs diagram for galaxy morphology featuring ellipticals, lenticulars, spirals, intermediate spirals, barred spirals and irregulars.
context_page_description: An intermediate spiral galaxy is a galaxy that is in between the classifications of a barred spiral galaxy and an unbarred spiral galaxy. It is designated as SAB in the galaxy morphological classification system devised by Gerard de Vaucouleurs. Subtypes are labeled as SAB0, SABa, SABb, or SABc, following a sequence analogous to the Hubble sequence for barred and unbarred spirals. The subtype is based on the relative prominence of the central bulge and how tightly wound the spiral arms are.
context_section_description: An intermediate spiral galaxy is a galaxy that is in between the classifications of a barred spiral galaxy and an unbarred spiral galaxy. It is designated as SAB in the galaxy morphological classification system devised by Gerard de Vaucouleurs. Subtypes are labeled as SAB0, SABa, SABb, or SABc, following a sequence analogous to the Hubble sequence for barred and unbarred spirals. The subtype (0, a, b, or c) is based on the relative prominence of the central bulge and how tightly wound the spiral arms are.
caption: Diagram of the Hubble - de Vaucouleurs morphological classification system illustrating the class of intermediate spirals.
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