Astronomy Picture of the Day - LDN 1471: A Windblown Star Cavity

By Free Republic | Created at 2024-11-17 21:07:56 | Updated at 2024-11-23 22:07:22 6 days ago

Astronomy Picture of the Day - LDN 1471: A Windblown Star Cavity
NASA ^ | 17 Nov, 2024 | Image Credit: Hubble, NASA, ESA; Processing & License: Judy Schmidt

Posted on 11/17/2024 1:03:50 PM PST by MtnClimber

Explanation: What is the cause of this unusual parabolic structure? This illuminated cavity, known as LDN 1471, was created by a newly forming star, seen as the bright source at the peak of the parabola. This protostar is experiencing a stellar outflow which is then interacting with the surrounding material in the Perseus Molecular Cloud, causing it to brighten. We see only one side of the cavity -- the other side is hidden by dark dust. The parabolic shape is caused by the widening of the stellar-wind blown cavity over time. Two additional structures can also be seen either side of the protostar; these are known as Herbig-Haro objects, again caused by the interaction of the outflow with the surrounding material. What causes the striations on the cavity walls, though, remains unknown. The featured image was taken by NASA and ESA’s Hubble Space Telescope after an original detection by the Spitzer Space Telescope.

TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa

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1 posted on 11/17/2024 1:03:50 PM PST by MtnClimber

To: MtnClimber

2 posted on 11/17/2024 1:04:11 PM PST by MtnClimber (For photos of scenery and wildlife, click on my screen name for my FR home page. More photos added.)

To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; abb; AFB-XYZ; AFPhys; Agatsu77; ...

Pinging the APOD list

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3 posted on 11/17/2024 1:04:55 PM PST by MtnClimber (For photos of scenery and wildlife, click on my screen name for my FR home page. More photos added.)

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