early-type spiral

early-type spiral

[′ər·lē ¦tīp ′spī·rəl]
(astronomy)
A spiral galaxy with a large nuclear bulge and tightly wound arms.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Most have an early-type spiral system, called a lenticular galaxy, as the central showpiece.
New image of rare polar ring galaxy brings Shelley's poetry alive
Abstract: Lenicular (S0) galaxies form a morphological transition class between ellipticals and early-type spirals in the Hubble (1936) classification system.
Astronomical colloquia
Low-surface-brightness galaxies dramatize this point as they are usually low-B/D systems (a late-type characteristic) that nevertheless have very low present-day star-formation rates (like early-type spirals).
Hubble's galaxy families are nearly a century old, but astronomers still debate their meaning : BEYOND THE HUBBLE SEQUENCE
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