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Mid-infrared imaging of the young binary star Hen 3600 : Evidence for a dust disk around the primary
| Content Provider | Semantic Scholar |
|---|---|
| Author | Jayawardhana, Ray Hartmann, Lee Fazio, Giovanni Fisher, Robert S. Telesco, Charles M. Piña, Robert K. |
| Copyright Year | 1999 |
| Abstract | We present high-resolution mid-infrared observations of the nearby late-type young binary system Hen 3-600. The binary, at a distance of ∼ 50 pc, could be a member of the TW Hydrae Association, the nearest known group of young stars, with an age of a few million years. Our images make it possible for the first time to determine which star in the pair, separated by 1.4”, harbors the mid-infrared excess detected by IRAS. In the near-infrared, where the radiation is primarily photospheric, Hen 3-600A (M3) and Hen 3-600B (M3.5) have a flux ratio of 1.6. At 4.8μm, 10.8μm, and 18.2μm, the primary becomes increasingly dominant over the secondary, suggesting that most of the circumstellar dust in the system resides around Hen 3-600A. Comparison of the spectral energy distribution (SED) of Hen 3-600A to the median SED of classical T Tauri stars suggests that its disk may be truncated by the secondary and provides tentative evidence for a central disk hole. The distribution of dust in the Hen 3-600 system may provide important clues to the formation and evolution of protoplanetary disks in close binaries. Subject headings: Accretion, accretion disks – Stars: Circumstellar Matter – Stars: Binaries – Stars: Formation – Stars: Pre-Main Sequence |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://arxiv.org/pdf/astro-ph/9905173v1.pdf |
| Alternate Webpage(s) | http://cds.cern.ch/record/387498/files/9905173.pdf |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Centaurea GUCY2C protein, human Image resolution Mahdiyar Medical Subject Headings Offset binary Stars, Celestial Stellar classification lysozyme, chicken egg white |
| Content Type | Text |
| Resource Type | Article |
