Discovery of an Edge-On Disk in the MBM 12 Young Association

Abstract

We report the discovery of a spatially-resolved edge-on protoplanetary disk in the ~2-Myr-old MBM 12 young association. Our near-infrared images of LkHa 263C (MBM 12A 3C), obtained with the Hokupa'a adaptive optics system on the Gemini North telescope, clearly show two elongated reflection nebulosities separated by a dark lane, a morphology well-matched by scattered light models of an optically thick (at near-infrared wavelengths) edge-on disk. An optical spectrum of the scattered light nebulosity obtained with the Keck II telescope exhibits a spectral type of M0 +/- 0.5 (T_eff = 3850 +/- 100 K) for the central star and contains H_alpha and forbidden emission lines, which may indicate the presence of a jet. The absence of a near-infrared point source implies A_K > 9.5 toward the unseen central star. The disk is flared and has a radius of ~150 AU (at a distance of 275 pc) and an inclination of 87 degrees. The aspect ratio of the model disk in the J-band is 0.72. There is possible evidence for dust settling to the disk midplane. LkHa 263C is 4.115" from the 0.415" binary LkHa 263 A and B (MBM 12A 3A and 3B), which is itself 15.5" from LkHa 262 (MBM 12A 2). Thus, LkHa 263C may be the first disk to be clearly resolved around an individual star in a young quadruple system. The detection of a faint edge-on disk near a bright star demonstrates both the high angular resolution and the high sensitivity that can be achieved with adaptive optics imaging on large telescopes.

arXiv comment12 pages, 3 PostScript figures, to appear in The Astrophysical Journal Letters

References in corpus (7)

• Accretion Disks Around Young Objects. III. Grain Growth
• HST/NICMOS Imaging of Disks and Envelopes Around Very Young Stars
• Infrared L Band Observations of the Trapezium Cluster: A Census of Circumstellar Disks and Candidate Protostars
• Optical Spectroscopy of Embedded Young Stars in the Taurus-Auriga Molecular Cloud
• On the MBM12 Young Association
• Mid-infrared imaging of the young binary star Hen 3-600: Evidence for a dust disk around the primary
• Protoplanetary Disks in the Nearest Star-Forming Cloud: Mid-Infrared Imaging and Optical Spectroscopy of MBM 12 Members

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