TY - JOUR
T1 - Discovery of a candidate protoplanetary disk around the embedded source IRc9 in Orion
AU - Smith, Nathan
AU - Bally, John
N1 - Funding Information:
1Based on observations obtained at the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the National Science Foundation (US), the Particle Physics and Astronomy Research Council (UK), the National Research Council (Canada), CONICYT (Chile), the Australian Research Council (Australia), CNPq (Brazil), and CONICET (Argentina). 2Hubble Fellow.
Funding Information:
Support for N. S. was provided by NASA through grant HF-01166.01A from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. We thank an anonymous referee for several suggestions that improved the presentation of our results.
PY - 2005/3/20
Y1 - 2005/3/20
N2 - We report the detection of spatially extended mid-infrared emission around the luminous embedded star IRc9 in OMC-1, as seen in 8.8, 11.7, and 18.3 μm images obtained with the Thermal-Region Camera and Spectrograph on Gemini South. The extended emission is asymmetric, and the morphology is reminiscent of warm dust disks around other young stars. The putative disk has a radius of roughly 1′.5 (700 AU) and a likely dust mass of almost 10 Moplus;. The infrared spectral energy distribution of IRc9 indicates a total luminosity of ∼100 Loplus;, implying that it will become an early A-type star when it reaches the main sequence. Thus, the candidate disk around IRc9 may be a young analog of the planetary debris disks around Vega-like stars and the disks of Herbig Ae stars, and may provide a laboratory in which to study the earliest phases of planet formation. A disk around IRc9 may also add weight to the hypothesis that an enhanced T Tauri-like wind from this star has influenced the molecular outflow from the OMC-1 core.
AB - We report the detection of spatially extended mid-infrared emission around the luminous embedded star IRc9 in OMC-1, as seen in 8.8, 11.7, and 18.3 μm images obtained with the Thermal-Region Camera and Spectrograph on Gemini South. The extended emission is asymmetric, and the morphology is reminiscent of warm dust disks around other young stars. The putative disk has a radius of roughly 1′.5 (700 AU) and a likely dust mass of almost 10 Moplus;. The infrared spectral energy distribution of IRc9 indicates a total luminosity of ∼100 Loplus;, implying that it will become an early A-type star when it reaches the main sequence. Thus, the candidate disk around IRc9 may be a young analog of the planetary debris disks around Vega-like stars and the disks of Herbig Ae stars, and may provide a laboratory in which to study the earliest phases of planet formation. A disk around IRc9 may also add weight to the hypothesis that an enhanced T Tauri-like wind from this star has influenced the molecular outflow from the OMC-1 core.
KW - Planetary systems: protoplanetary disks
KW - Stars: formation
KW - Stars: pre-main-sequence
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U2 - 10.1086/429373
DO - 10.1086/429373
M3 - Article
AN - SCOPUS:18744386117
SN - 0004-637X
VL - 622
SP - L65-L68
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 II
ER -