Celestial hemisphere:  Southern  ·  Constellation: Fornax (For)  ·  Contains:  NGC 1365
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NGC 1365 - The Great Barred Spiral Galaxy, BrianH
NGC 1365 - The Great Barred Spiral Galaxy
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NGC 1365 - The Great Barred Spiral Galaxy

Getting plate-solving status, please wait...
NGC 1365 - The Great Barred Spiral Galaxy, BrianH
NGC 1365 - The Great Barred Spiral Galaxy
Powered byPixInsight

NGC 1365 - The Great Barred Spiral Galaxy

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Description

NGC 1365 is a barred spiral galaxy in the Fornax cluster. Within the larger long bar stretching across the center of the galaxy appears to be a smaller bar that comprises the core, with an apparent size of about 50″ × 40″. This second bar is more prominent in infrared images of the central region of the galaxy, and likely arises from a combination of dynamical instabilities of stellar orbits in the region, along with gravity, density waves, and the overall rotation of the disc. The inner bar structure likely rotates as a whole more rapidly than the larger long bar, creating the diagonal shape seen in images.

The spiral arms extend in a wide curve north and south from the ends of the east-west bar and form an almost ring like Z-shaped halo. Astronomers think NGC 1365's prominent bar plays a crucial role in the galaxy's evolution, drawing gas and dust into a star-forming maelstrom and ultimately feeding material into the central black hole.

NGC 1365, including its two outer spiral arms, spreads over around 200,000 light-years. Different parts of the galaxy take different times to make a full rotation around the core of the galaxy, with the outer parts of the bar completing one circuit in about 350 million years. NGC 1365 and other galaxies of its type have come to more prominence in recent years with new observations indicating that the Milky Way could also be a barred spiral galaxy. Such galaxies are quite common — two thirds of spiral galaxies are barred according to recent estimates, and studying others can help astronomers understand our own galactic home.

https://en.wikipedia.org/wiki/NGC_1365

This is from Telescope Live data.

Dates: 5 January - 1 February 2022
Location: El Sauce Observatory, Río Hurtado, Coquimbo Region, Chile
NGC 1955 - Open Cluster and emission nebula in the Dorado constellation
Camera: FLI PL 9000
Telescope: CHI-1/Planewave CDK24 610mm F6.5 Corrected Dall-Kirkham
Accessories: Astrodon LRGB filters
Mount: Mathis MI-1000/1250 with absolute encoders
Subframes: 14X600s Lum, 14X600s R, 14X600 G, 14X600 G
 Total: 560mins/9 hours 20 minutes
Temperature: -30C
Stacking/Integration: PixInsight
Postprocessing: PixInsight & NoiseXTerminator & StarXTerminator

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NGC 1365 - The Great Barred Spiral Galaxy, BrianH