BN object

BN object

short for Becklin-Neugebauer object. A pointlike infrared source in the Orion molecular cloud (OMC-1). It is thought to be a young B0 or B1 star, surrounded by a compact H II region and an expanding dust envelope characterized by a strong stellar wind. The infrared luminosity of the dust is about a thousand times the Sun's luminosity at a temperature of about 600 K. The object is still above the main sequence and evolving toward it, and may represent the earliest phase of stellar evolution that has so far been identified.

BN object

[¦bē′en ‚äb·jəkt]
References in periodicals archive ?
The BN object and its associated starbirth cluster are surrounded by violent drama normally unseen from the outside, indicated by the faintly visible red sprays.
Discrete, gas-blob "bullets" from the vicinity of the BN object are plowing outward through the Orion Nebula at up to 400 kilometers per second, leaving hollow tubes with brightly shocked walls in their wakes.
A 2004 study suggested that the BN object originated in Orion's Trapezium Star Cluster about 4,000 years ago (S&T: August 2004, page 24).