Chandra Resolves the Double FU Orionis System RNO 1B/1C in X-rays

Abstract

We present new Chandra X-ray observations of the close pair of young stars RNO 1B and 1C (6${}^{\prime \prime }$ separation) located in the L1287 cloud. RNO 1B erupted in 1978 - 1990 and is classified as an FU Orionis star (FUor). RNO 1C also shows most of the properties of an FUor but no eruption has yet been seen. Only a few dozen FUors are known and the presence of two such objects with a small angular separation is rare, suggesting a common origin. Both stars were faintly detected by Chandra and we summarize their X-ray properties within the framework of other previously detected FUors. We also report other X-ray detections in L1287 including the deeply-embedded young star RNO 1G, the jet-like radio source VLA 3, and an enigmatic hard flaring source with no 2MASS counterpart that was only detected in the second of two Chandra exposures.

6 pages, 4 figures

References in corpus (5)

• The Hot Inner Disk of FU Ori
• X-ray Emission from T Tauri Stars and the Role of Accretion: Inferences from the XMM-Newton Extended Survey of the Taurus Molecular Cloud
• The Unusual X-ray Spectrum of FU Orionis
• Deeply embedded objects and shocked molecular hydrogen: The environment of the FU Orionis stars RNO 1B/1C
• X-ray emission from an FU Ori star in early outburst: HBC 722

Cited by in corpus (2)

• Measuring Optical Extinction Towards Young Stellar Objects Using Diffuse Interstellar Bands
• VLA ammonia observations of L1287: analysis of the "Guitar" core and two filaments