The Hubble tuning fork - classification of galaxies
The diagram is roughly divided into two parts: elliptical galaxies (ellipticals) and spiral galaxies (spirals). Hubble gave the ellipticals numbers from zero to seven, which characterize the ellipticity of the galaxy - "E0" is almost round, "E7" is very elliptical.
Elliptical galaxy - Wikipedia
Elliptical galaxies are characterized by several properties that make them distinct from other classes of galaxy. They are spherical or ovoid masses of stars, starved of star-making gases.
What are elliptical galaxies? - EarthSky
Dec 5, 2012 · Ellipticals are one of three main classes of galaxies defined by American astronomer Edwin Hubble in 1936. Unlike the other two classes – spirals and lenticulars – ellipticals have almost no...
Types of Galaxies | Pictures, Facts, and Information - AstroBackyard
Elliptical Galaxies. These elliptical galaxies are classified by their ovular shape and lack of central bulge. In contrast to their name, however, sometimes these galaxies are rather circular.
Types of Galaxies - Spiral, Elliptical & Irregular Galaxies - Space Facts
Elliptical galaxies are roughly egg-shaped (ellipsoidal or ovoid) found largely in galaxy clusters and smaller compact groups. Most ellipticals contain older, low-mass stars, and because they lack a great deal of star-making gas and dust clouds, there …
Galaxy morphological classification - Wikipedia
Elliptical galaxies are divided into three 'stages': compact ellipticals (cE), normal ellipticals (E) and late types (E +). Lenticulars are similarly subdivided into early (S − ), intermediate (S 0 ) and late (S + ) types.
Types of Galaxies - Astronomy Notes
Jun 28, 2022 · Edwin Hubble divided the galaxies into three basic groups based on their appearance: ellipticals, spirals, and irregulars. The ellipticals are smooth and round or elliptical, the spirals are flat with a spiral pattern in their disk, and the irregulars have stars and gas in random patches.
Elliptical (E) and ellicular (ES) galaxies in the M_bh-M_*,sph diagram …
Jan 17, 2025 · Abstract page for arXiv paper 2501.09953: Elliptical (E) and ellicular (ES) galaxies in the M_bh-M_*,sph diagram, and a merger-driven explanation for the origin of ES galaxies, anti-truncated stellar discs in lenticular galaxies, and the Sersicification of E galaxy light profiles
Hubble Classification - Edwin Hubble
While working at the Mount Wilson Observatory, Edwin Hubble developed a galaxy classification system. The "tuning fork" diagram above shows us three of the four shapes used to distinguish the various galaxies, E0 and E 6 represent variables Elliptical galaxies , while Spiral Galaxies are represented by S0, Sa , Sb , and Sc , and Barred Spirals ...
astronomy chp 14 & 16 hw Flashcards - Quizlet
4 days ago · Match each stellar orbit to the correct location in a spiral galaxy. The stars in elliptical galaxies generally move either 1) in irregular orbits in all directions or 2) together in a particular direction as they orbit. What is the general motion for the stars in an elliptical galaxy?