Which Hubble subtype designation is characterized by a prominent, large central bulge and spiral arms wound very tightly?
Answer
Sa
The Sa galaxy represents the tightest end of the unbarred spiral classification spectrum, possessing a large central bulge that dominates the light profile and very tightly wound, sometimes indistinct, spiral arms.
Related Questions
What are the three main components of a typical spiral galaxy?What two key physical features guide the differentiation between spiral subtypes (a, b, c) in the Hubble scheme?Which Hubble subtype designation is characterized by a prominent, large central bulge and spiral arms wound very tightly?What morphological characteristic defines an Sc galaxy compared to an Sa galaxy?What is the standard designation used for spiral galaxies that possess a central bar structure?What is the key structural difference between a spiral galaxy (S) and a Lenticular galaxy (S0)?What does the term 'Grand Design' refer to when describing spiral arm texture?What is the classification scheme universally accepted for categorizing spirals based on observable morphology?In terms of stellar populations, what characteristic tends to correlate with the Sa morphological type?How does the presence of a central bar structure (SB) dynamically influence the galaxy?