What is the Hubble tuning fork classification scheme based on?

What is the Hubble tuning fork classification scheme based on?

Although this scheme, also known as the Hubble tuning fork diagram, is now considered somewhat too simple, the basic ideas still hold. The diagram is roughly divided into two parts: elliptical galaxies (ellipticals) and spiral galaxies (spirals)….About the Object.

Name: Hubble Galaxy Classification
Category: Galaxies

What does the Hubble Tuning Fork illustrate?

Hubble is credited with creating a classification scheme for galaxies, which is usually referred to as his “Tuning Fork” diagram. This is a classical type of image still used by astronomers today to show how galaxies are classified.

Which class of galaxies does not fit neatly into the Hubble classification scheme?

Hubble found that certain types of galaxies didn’t fit neatly with his classification: Galaxies, such as dwarf galaxies and large Megellanic Cloud galaxies. Although they are sometimes referred to as giant elliptical, these irregular galaxies are among the smallest in the universe.

What is the Hubble classification of the Milky Way galaxy?

Sometimes Hubble’s classification system is extended by adding a d type, which has even more loosely wound spiral arms and a smaller core. The Milky Way galaxy is thought to be a barred, SBb galaxy.

Why is the Hubble sequence called the tuning fork diagram?

The Hubble sequence is a morphological classification scheme for galaxies invented by Edwin Hubble in 1926. It is often colloquially known as the Hubble tuning fork diagram because the shape in which it is traditionally represented resembles a tuning fork .

What kind of classification scheme does Hubble have?

The Hubble classification of galaxies, also referred to as the ‘tuning fork’ diagram because of its shape, classes galaxies along three main lines into: The Hubble Classification scheme for galaxies, often referred to as the “tuning fork” diagram.

How are spiral galaxies classified by Hubble’s tuning fork?

In some spiral galaxies, the bulge has a well-defined BAR that passes through the bulge. Hubble classified these galaxies by referring to them as SB galaxies with subclasses a, b, and c, just like the normal spirals.

Where are the lenticulars in the Hubble tuning fork?

At the centre of the Hubble tuning fork, where the two spiral-galaxy branches and the elliptical branch join, lies an intermediate class of galaxies known as lenticulars and given the symbol S0.