Astronomy:LDN 1622

From HandWiki
LDN 1622
Nebula
Dark Nebula
File:300px
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]
Distance1,400[2] ly
ConstellationOrion
See also: Lists of nebulae

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]

Observation

As 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

  1. ↑ 1.0 1.1 "LDN 1622". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=LDN+1622. 
  2. ↑ 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. doi:10.1051/0004-6361:20035943. Bibcode: 2005A&A...430..523W. http://www.aanda.org/index.php?option=com_article&access=bibcode&Itemid=129&bibcode=2005A%2526A...430..523WFUL. 
  3. ↑ 3.0 3.1 Grelin, Antoine & Dalia (2021-02-24). "LDN 1622 - The Boogeyman Nebula in Orion" (in en). https://www.galactic-hunter.com/post/ldn1622. 
  4. ↑ 4.0 4.1 "APOD: 2023 January 25 – LDN 1622: The Boogeyman Nebula". https://apod.nasa.gov/apod/ap230125.html. 
  5. ↑ information@eso.org. "Hidden Secrets of Orion's Clouds - VISTA survey gives most detailed view of Orion A molecular cloud in the near-infrared" (in en). https://www.eso.org/public/news/eso1701/. 
  6. ↑ Jones, Trevor (2022-03-17). "The Boogeyman Nebula | My Astrophotography Image & Details" (in en-US). https://astrobackyard.com/boogieman-nebula/. 
  7. ↑ "Nebula Photos - LDN 1622 (Boogeyman Nebula)". https://www.nebulaphotos.com/lbn-ldn/ldn1622/. 
  8. ↑ 8.0 8.1 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, doi:10.1093/mnras/stv1863, http://arxiv.org/abs/1501.01484, retrieved 2026-04-19 
  9. ↑ Dickinson, C.; Casassus, S.; Davies, R. D.; Allison, J. R.; Bustos, R.; Cleary, K.; Davis, R. J.; Jones, M. E. et al. (2010-06-29). "Infrared-correlated 31-GHz radio emission from Orion East: IR-correlated radio emission from Orion East" (in en). Monthly Notices of the Royal Astronomical Society 407 (4): 2223–2229. doi:10.1111/j.1365-2966.2010.17079.x. 



Retrieved from "https://handwiki.org/wiki/index.php?title=Astronomy:LDN_1622&oldid=4392267"