APOD: LDN 1622: The Boogeyman Nebula (2023 Jan 25)

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APOD: LDN 1622: The Boogeyman Nebula (2023 Jan 25)

Post by APOD Robot » Wed Jan 25, 2023 5:05 am

Image LDN 1622: The Boogeyman Nebula

Explanation: To some, the dark shape looks like a mythical boogeyman. Scientifically, Lynds' Dark Nebula (LDN) 1622 appears against a faint background of glowing hydrogen gas only visible in long telescopic exposures of the region. In contrast, the brighter reflection nebula vdB 62 is more easily seen just above and to the right of center in the featured image. LDN 1622 lies near the plane of our Milky Way Galaxy, close on the sky to Barnard's Loop, a large cloud surrounding the rich complex of emission nebulae found in the Belt and Sword of Orion. With swept-back outlines, the obscuring dust of LDN 1622 is thought to lie at a similar distance, perhaps 1,500 light-years away. At that distance, this 2-degree wide field of view would span about 60 light-years. Young stars do lie hidden within the dark expanse and have been revealed in Spitzer Space Telescope infrared images.

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Ann
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Re: APOD: LDN 1622: The Boogeyman Nebula (2023 Jan 25)

Post by Ann » Wed Jan 25, 2023 5:43 am



Where is the boogeyman? Under your bed?


Boogeyman Nebula in Orion wide field Volskiy.png
Here there be Boogeyman. Credit: Stanislav Volskiy.

Ha ha, no! The boogeyman is in the armpit of Orion, below Betelgeuse.

Phew, the smell!!! 😫

Ann
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Re: APOD: LDN 1622: The Boogeyman Nebula (2023 Jan 25)

Post by AVAO » Wed Jan 25, 2023 7:02 am

APOD Robot wrote: Wed Jan 25, 2023 5:05 am Image LDN 1622: The Boogeyman Nebula

Explanation: To some, the dark shape looks like a mythical boogeyman. Scientifically, Lynds' Dark Nebula (LDN) 1622 appears against a faint background of glowing hydrogen gas only visible in long telescopic exposures of the region. In contrast, the brighter reflection nebula vdB 62 is more easily seen just above and to the right of center in the featured image. LDN 1622 lies near the plane of our Milky Way Galaxy, close on the sky to Barnard's Loop, a large cloud surrounding the rich complex of emission nebulae found in the Belt and Sword of Orion. With swept-back outlines, the obscuring dust of LDN 1622 is thought to lie at a similar distance, perhaps 1,500 light-years away. At that distance, this 2-degree wide field of view would span about 60 light-years. Young stars do lie hidden within the dark expanse and have been revealed in Spitzer Space Telescope infrared images.

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A large proportion of the YSO's in the LDN 1622 show characteristics of HH-objects. Could it be that the HH-objects simply mark a phase in star formation - I mean from every star? Or develops only certain kind of star jets, which become visible as HH-objects?

https://iopscience.iop.org/article/10.1 ... 4/3843/pdf
.
Click to view full size image 1 or image 2
biggg:https://live.staticflickr.com/65535/526 ... b2d0_o.jpg

Image
HH 962 in LDN 1622 jac berne (flickr)
Original data source: NASA / ESA (SST)
Last edited by AVAO on Thu Jan 26, 2023 5:10 am, edited 6 times in total.

Sa Ji Tario

Re: APOD: LDN 1622: The Boogeyman Nebula (2023 Jan 25)

Post by Sa Ji Tario » Wed Jan 25, 2023 11:08 am

According to my pareidolia, she looks like the silhouette of MM in a mink coat in Men Prefer Blondes, with a microphone in hand, singing and dancing.

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Re: APOD: LDN 1622: The Boogeyman Nebula (2023 Jan 25)

Post by orin stepanek » Thu Jan 26, 2023 3:06 am

two-cats-hiding-space.jpg
Kitties hiding from bogeyman!
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