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. A faint glow around the center-most stars can be observed in the visible light spectrum, especially with the aid of a telescope.
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| Constellation | Orion |
| Right ascension | 05h 35m 14.113s[2] |
| Declination | −05° 22′ 22.73″[2] |
| Characteristics | |
| Spectral type | B[3] |
| Astrometry | |
| Distance | ~1500[4] ly |
| Details | |
| Mass | 7[3] M☉ |
| Other designations | |
| Database references | |
| SIMBAD | data |
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.
Becklin's star
Becklin's star (IRC -10093) is located at 5h 35.3m / -5° 23', very near the Becklin-Neugebauer object.[5]
References
- Hillenbrand, Lynne A.; Carpenter, John M.; Skrutskie, M. F. (January 2001). "Periodic Photometric Variability in the Becklin-Neugebauer Object". The Astrophysical Journal. 547 (1): L53--L56. doi:10.1086/318884. Retrieved 10 February 2022.
- "NAME BN Object". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-11-16.
- 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 (1): 47–50. arXiv:astro-ph/0401552. Bibcode:2004ApJ...607L..47T. doi:10.1086/421721. S2CID 119093940. Retrieved 2016-08-21.
- "The Becklin-Neugebauer Object: Circumstellar Disk Cradles Young Massive Star". Adaptiveoptics.org. 31 August 2005. Retrieved 2016-08-21.
- Sky Catalogue 2000.0, Volume 2: Double Stars, Variable Stars and Nonstellar Objects - Glossary of Selected Astronomical Names, page xlv
- Becklin-Neugebauer object (Encyclopædia Britannica)
- 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. S2CID 4424229.
- 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 (1): 40. arXiv:1211.0085. Bibcode:2013ApJ...765...40P. doi:10.1088/0004-637X/765/1/40. S2CID 28627671.
- Schultz, A. S. B. (2001). "The Secret Inner Life of the Orion Nebula" (PDF). Publications of the Astronomical Society of Australia. 18 (1): 58–63. Bibcode:2001PASA...18...58S. doi:10.1071/AS01009. Retrieved 2016-08-21.
- 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].