LDN 1622 (also known as Boogeyman Nebula) is a dark nebula and is part of Barnard's loop in the Orion Molecular Cloud Complex located in the constellation of Orion.[3][4] It is a dense molecular cloud of cold gas and dust that obscures light from background stars and emission regions.[4][5]
| Nebula | |
|---|---|
| Dark Nebula | |
.jpg) Image of LDN 1622 from Kitt Peak National Observatory | |
| Observation data: J2000.0 epoch | |
| Right ascension | 05h 54m 28.00s[1] |
| Declination | +01° 48′ 12.0″[1] |
| Distance | 1,400[2] ly |
| Constellation | Orion |
Observation
editAs a dark nebula, LDN 1622 is challenging to observe visually or photographically and requires dark skies, long exposures, and often narrowband hydrogen-alpha imaging to reveal it against faint background emission.[3][6] It is frequently imaged alongside LDN 1621 together known as Orion East Cloud and the reflection nebulae vdB 62 and vdB 63.[7]
LDN 1622 has been studied as a source of anomalous microwave emission (AME). High-resolution observations with the Robert C. Byrd Green Bank Telescope at 4.85 GHz and 13.7 GHz revealed a 13.7 GHz AME flux density of 7.0 ± 1.4 mJy,[8] with a rising spectrum toward higher frequencies consistent with the spinning-dust model.[9][8]
Reference
edit- 1 2 "LDN 1622". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2026-04-19.
- ↑ Wilson, B.A.; Dame, T.M.; Masheder, M.R.W.; Thaddeus, P. (2005). "A uniform CO survey of the molecular clouds in Orion and Monoceros". Astronomy and Astrophysics. 430 (2): 523–539. arXiv:astro-ph/0411089v1. Bibcode:2005A&A...430..523W. doi:10.1051/0004-6361:20035943. S2CID 13916583.
- 1 2 Grelin, Antoine & Dalia (2021-02-24). "LDN 1622 - The Boogeyman Nebula in Orion". Galactic Hunter. Retrieved 2026-04-19.
- 1 2 "APOD: 2023 January 25 – LDN 1622: The Boogeyman Nebula". apod.nasa.gov. Retrieved 2026-04-19.
- ↑ information@eso.org. "Hidden Secrets of Orion's Clouds - VISTA survey gives most detailed view of Orion A molecular cloud in the near-infrared". www.eso.org. Retrieved 2025-12-18.
- ↑ Jones, Trevor (2022-03-17). "The Boogeyman Nebula | My Astrophotography Image & Details". AstroBackyard. Retrieved 2026-04-19.
- ↑ "Nebula Photos - LDN 1622 (Boogeyman Nebula)". www.nebulaphotos.com. Retrieved 2026-04-19.
- 1 2 Harper, S. E.; Dickinson, C.; Cleary, K. (2015-01-07), "Observations of free–free and anomalous microwave emission from LDN 1622 with the 100 m Green Bank Telescope", Monthly Notices of the Royal Astronomical Society, 453 (4): 3376–3386, arXiv:1501.01484, doi:10.1093/mnras/stv1863, retrieved 2026-04-19
- ↑ Dickinson, C.; Casassus, S.; Davies, R. D.; Allison, J. R.; Bustos, R.; Cleary, K.; Davis, R. J.; Jones, M. E.; Pearson, T. J.; Readhead, A. C. S.; Reeves, R.; Taylor, A. C.; Tibbs, C. T.; Watson, R. A. (2010-06-29). "Infrared-correlated 31-GHz radio emission from Orion East: IR-correlated radio emission from Orion East". Monthly Notices of the Royal Astronomical Society. 407 (4): 2223–2229. arXiv:1003.3815. doi:10.1111/j.1365-2966.2010.17079.x.
External links
edit
Media related to LDN 1622 at Wikimedia Commons- Astronomy Picture of the Day
- 25 January 2023: LDN 1622: The Boogeyman Nebula
