Becklin–Neugebauer Object

The Becklin–Neugebauer Object (BN) is an object visible only in the infrared in the Orion Molecular Cloud. It was discovered in 1967 by Eric Becklin and Gerry Neugebauer during their near-infrared survey of the Orion Nebula. It is at 05^h 35^m 14.11^s −05° 22′ 22.7″

The BN Object is thought to be an intermediate-mass protostar. It was the first star detected using infrared methods and is deeply embedded within the Orion star-forming nebula, where it is invisible at optical wavelengths because the light is completely scattered or absorbed due to the high density of dusty material.

External links

• Becklin-Neugebauer object (Encyclopædia Britannica)
• "The Becklin-Neugebauer Object: Circumstellar Disk Cradles Young Massive Star". Adaptiveoptics.org. 31 August 2005. Retrieved July 2013. 
• Hillenbrand, Lynne A; Carpenter, John M.; Skrutskie, M. F. (20 January 2001). "Periodic Photometric Variability in the Becklin-Neugebauer Object" (PDF). Astrophysical Journal 547: 53–56. arXiv:astro-ph/0010471. Bibcode:2001ApJ...547L..53H. doi:10.1086/318884. Retrieved July 2013. 
• Jiang, Zhibo; Tamura, Motohide; Fukagawa, Misato; Hough, Jim; Lucas, Phil; Suto, Hiroshi; Ishii, Miki; Yang, Ji (2005). "A circumstellar disk associated with a massive protostellar object". Nature 437 (7055): 112–115. Bibcode:2005Natur.437..112J. doi:10.1038/nature04012. PMID 16136137. 
• Plambeck, R.L.; Bolatto, A. D.; Carpenter, J. M.; Eisner, J. A.; Lamb, J. W.; Leitch, E. M.; Marrone, D. P.; Muchovej, S. J.; Pérez, L. M.; Pound, M. W.; Teuben, P. J.; Volgenau, N. H.; Woody, D. P.; Wright, M. C. H.; Zauderer, B. A. (2013). "The Ionized Circumstellar Envelopes of Orion Source I and the Becklin-Neugebauer Object". The Astrophysical Journal 765: 40. arXiv:1211.0085. Bibcode:2013ApJ...765...40P. doi:10.1088/0004-637X/765/1/40. 
• Schultz, A. S. B. (2001). "The Secret Inner Life of the Orion Nebula" (PDF). Publications of the Astronomical Society of Australia (CSIRO) 18: 58–63. Bibcode:2001PASA...18...58S. doi:10.1071/AS01009. Retrieved July 2013. 
• Tan, Jonathan C. (20 May 2004). "The Becklin-Neugebauer Object as a Runaway B Star, Ejected 4000 Years Ago from the θ1 Orionis C System" (PDF). Astrophysical Journal 607: 47–50. arXiv:astro-ph/0401552. Bibcode:2004ApJ...607L..47T. doi:10.1086/421721. Retrieved July 2013. 
• Tan, Jonathan C. (August 28, 2008). "Astrometry of the Dynamical Ejection of the Becklin-Neugebauer Object from θ Ori C". arXiv:0807.3771 [astro-ph].