Flying Owl Nebula of the LMC by Zaytsev and Hanson (Alexandr Zaytsev)

Flying Owl Nebula of the LMC by Zaytsev and Hanson

The area shown in this image is a part of LMC-4 superbubble is located North-East of the Large Magellanic Cloud (LMC) and contains a rich collection of HII regions and supernova remnants (SNR) fitting in between the NGC 2041 globular cluster [1] and the NGC 2030 (also known as LMC N63 or LHA 120-N63) HII region [2]. The positioning of this area with respect to the main body of the LMC is shown on the finder map in revision K and also illustrated by the wide angle image available under [3], where it can be identified by a quadrilateral connecting the following objects:

LHA 120-N64{A, C} emission nebulae and LHA 120-N64B HII region [4] / DEM L 253 and DEM L 254 HII regions [5],
NGC 2030 [2] / SNR B0535-66.0 [6],
LHA 120-N55A star forming region [7] / DEM L 228{a, b} HII regions [8],
NGC 2041 [1].

The size of the side of the image of 64 arc.min corresponds to 2.9kly at the distance to LMC taken as 158kly. Given the size of this subregion of the LMC, there are numerous objects of particular interest found in it, of which those occupying the upper segment of the image are listed and shown in Fig. 1 (also in revisions C and D).

Fig. 1. Upper segment of the image showing the arrangement of HII regions and SNR remnants around TYC 8891-846-1 star [9], going left to right here are: (a) NGC 2041 globular cluster [1], (b) 2MASS J05375351-6654269 galaxy [10] (c) LMC N65 (LHA 120-N65, DEM L 255) HII region [11], (d) SNR J053731-662740 [12] / DEM L 251 HII region [13], and (e) LHA 120-N64{A-C} [4] / DEM L {253. 254} HII regions [5]. Shown at 100% of the original image resolution.

The most interesting combination of objects in this scene is located in the mid-right segment listed and shown in Fig. 2 (also in revisions E and F), with some additional details shown in Fig. 3 (also in revisions G and H). The collection of shock fronts and emission nebulae in the middle of Fig. 2 greatly resembles a snowy owl mid-flight, with both wings angled up for soft landing configuration, and hereinafter referred to as “Flying Owl Nebula”.

Fig. 2. The portion of the image (mid-right segment) containing a combination of interstellar shell [KDS99] SGS 14 [14], several emission nebulae and what appear to be a collection of shock fronts forming a structure much resembling the shape of a snowy owl mid-flight, hereinafter referred to as a “Flying Owl Nebula”. One of the shock fronts inside this nebula is formed by (a) Brey 51 Wolf-Rayet star [15], and the other shock front identified here as (b) LHA 120-N 62A [16]. A distant galaxy (c) LEDA 178603 [17] also makes an appearance here. The pair of (d) NGC 2030 HII region [2] and SNR B0535-66.0 [6] are also visible here in the upper right corner. Shown at 100% of the original image resolution.

Fig. 3. The structure of the shock fronts mid-lower forming the left “wing base” of the Flying Owl nebula - a cropped image shown at 200% of the original image resolution: (a) Brey 51 Wolf-Rayet star [15] and the shock front associated with it, (b) and (c) - two other larger fronts.

The prominent structure featured in the mid-lower segment of the image is shown in Fig. 4 (also in revisions J and I).

C

Title: Fig. 1 with annotations

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D

Title: Fig. 1 without annotations

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E

Title: Fig. 2 with annotations

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F

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G

Title: Fig. 3 with annotations

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H

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I

Title: Fig. 4 with annotations

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J

Title: Fig. 4 without annotations

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K

Title: Finders map for the T3 scene using the Chilescope T4 wide angle Ha image of the LMC obtained earlier

Description: Chilescope T4 image on the background is intentionally scaled up factor of 2x, The Chilescope T3 image on the right is in the original resolution (as in original revision).

Note that T3 image in full resolution is rotated 90 deg clockwise compared to its scaled down version in the overlay added on top of T4 image.

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Status	Advanced success
Started	...
Astrometry.net job	9926677
PixInsight job	5OUZ0MSMSTL53JM23COQIVBZ49GX55S0
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m36s.601
RA (top/left)	05h40m56s.653
RA (top/right)	05h40m54s.123
RA (bottom/right)	05h30m30s.783
RA (bottom/left)	05h30m05s.623

Dec (center)	-66°28′03″.80
Dec (top/left)	-67°00′01″.97
Dec (top/right)	-65°56′31″.36
Dec (bottom/right)	-65°55′16″.63
Dec (bottom/left)	-66°58′51″.80

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