#messier 95

[quiltofstars]

A collection of galaxies in Leo, the Lion // Nathanael Martin

From right to left: M95, M96, M105, NGC 3384, NGC 3389.

[beautyandtheuniverse]

Messier 95, A Barred Spiral Galaxy by R Jay GaBany

[chibinotan]

Stellar Feedback

[wigmund]

From SpaceTelescope.Org Picture of the Week; October 8, 2018:

Rings Upon Rings

This image from the NASA/ESA Hubble Space Telescope reveals a spiral galaxy named Messier 95 (also known as M95 or NGC 3351). Located about 35 million light-years away in the constellation of Leo (The Lion), this swirling spiral was discovered by astronomer Pierre Méchain in 1781, and cataloged by French astronomer Charles Messier just four days later. Messier was primarily a comet hunter, and was often left frustrated by objects in the sky that resembled comets but turned out not to be. To help other astronomers avoid confusing these objects in the future, he created his famous catalog of Messier objects.

Most definitely not a comet, Messier 95 is actually a barred spiral galaxy. The galaxy has a bar cutting through its center, surrounded by an inner ring currently forming new stars. Also our own Milky Way is a barred spiral.

As well as hosting this stellar nursery, Messier 95 is a known host of the dramatic and explosive final stages in the lives of massive stars: supernovae. In March 2016 a spectacular supernova named SN 2012aw was observed in the outer regions of one of Messier 95’s spiral arms. Once the light from the supernova had faded, astronomers were able to compare observations of the region before and after the explosion to find out which star had “disappeared” — the progenitor star. In this case, the star was an especially huge red supergiant up to 26 times more massive than the Sun.

Credit: ESA/Hubble & NASA

[quiltofstars]

M96 (NGC 3368, left) and M95 (NGC 3351, right) // Stephane@18250

[quiltofstars]

M95 // Shannon Calvert

Home to around 40 billion stars, the barred spiral galaxy M95 is currently forming even more stars! Deep within its core is a star-forming ring that is forming stars at a rate of 0.4 solar masses per year.

Discovered by Méchain in 1781, Admiral William Smyth (1788-1865) called it a "lucid white nebula."

[quiltofstars]

M95 (right) and M96 (left) // David Cheng

M95 and M96, along with M105 and several other galaxies, make up the M96 Group. An interaction between M96 and NGC 3384 (not shown) happened about a billion years ago. This drew out a huge cold ring of hydrogen gas into the group environment stretching out across 650,000 light years of space.

[chibinotan]

Bar and Ring