Journal
ASTROPHYSICAL JOURNAL
Volume 547, Issue 1, Pages L53-L56Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/318884
Keywords
infrared : stars; stars : individual (Orion BN/KL); stars : pre-main-sequence; stars : variables : other
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The Becklin-Neugebauer object (BN) in the Orion Nebula cluster is a well-studied, optically invisible, infrared-bright young stellar object that is thought to be an intermediate-mass protostar. We report here that BN exhibited nearly sinusoidal periodic variability at the near-infrared H and K-s bands during a 1 month observing campaign in 2000 March/April. The period was 8.28 days, and the peak-to-peak amplitude was similar to0.2 mag. Plausible mechanisms for producing the observed variability characteristics are explored.
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