AstronomyHubble rings in a new galactic view

Hubble rings in a new galactic view

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This NASA/ESA Hubble House Telescope picture reveals the galaxy LEDA 857074. Credit score: ESA/Hubble & NASA, I. Chilingari

The topic of this NASA/ESA Hubble House Telescope picture is located within the Perseus Cluster, often known as Abell 426, 320 million light-years from Earth. It is a barred spiral galaxy referred to as MCG+07-07-072, seen right here amongst a variety of photobombing stars which might be a lot nearer to Earth than it’s.

MCG+07-07-072 has fairly an uncommon form for a spiral galaxy, with skinny arms rising from the ends of its barred core to attract a near-circle round its disk. It’s categorised as an SBc(r) galaxy: the c denotes that its two spiral arms are loosely wound, every solely performing a half-turn across the galaxy, and the (r) is for the ring-like construction they create.

Rings in galaxies are available in fairly just a few kinds, from merely unusual, to uncommon and scientifically essential. Lenticular galaxies are a sort that sit between elliptical and spiral galaxies. They characteristic a big disk, not like an elliptical galaxy, however lack any spiral arms. Lenticular means lens-shaped, and these galaxies usually characteristic ring-like shapes of their disks.

In the meantime, the classification of “ring galaxy” is reserved for peculiar galaxies with a spherical ring of gasoline and star formation, very like spiral arms look, however fully disconnected from the galactic nucleus—and even with none seen nucleus. They’re regarded as fashioned in galactic collisions.

Lastly, there are the well-known gravitational lenses, the place the ring is in truth a distorted picture of a distant, background galaxy, fashioned by the “lens” galaxy bending mild round it. Ring-shaped photos, referred to as Einstein rings, solely kind when the lensing and imaged galaxies are completely aligned.

Quotation:
Hubble rings in a brand new galactic view (2024, August 16)
retrieved 16 August 2024
from https://phys.org/information/2024-08-hubble-galactic-view.html

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