High‐Resolution Near‐Infrared Observations of the Circumstellar Disk System in the Bok Globule CB 26
| Autor: | B. Stecklum, R. Launhardt, O. Fischer, A. Henden, Ch. Leinert, H. Meusinger |
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| Rok vydání: | 2004 |
| Předmět: |
Physics
010504 meteorology & atmospheric sciences Stellar mass Linear polarization Reflection nebula Bok globule Young stellar object Polarimetry Astronomy and Astrophysics Astrophysics Polarization (waves) 01 natural sciences symbols.namesake Space and Planetary Science 0103 physical sciences symbols Astrophysics::Solar and Stellar Astrophysics Spectral energy distribution Astrophysics::Earth and Planetary Astrophysics 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics 0105 earth and related environmental sciences |
| Zdroj: | The Astrophysical Journal. 617:418-424 |
| ISSN: | 1538-4357 0004-637X |
| DOI: | 10.1086/425291 |
| Popis: | We report on results of near-infrared and optical observations of the mm disk embedded in the Bok globule CB26 (Launhardt & Sargent 2001). The nearinfrared images show a bipolar reflection nebula with a central extinction lane which coincides with the mm disk. Imaging polarimetry of this object yielded a polarization pattern which is typical for a young stellar object surrounded by a large circumstellar disk and an envelope, seen almost edge-on. The strong linear polarization in the bipolar lobes is caused by single scattering at dust grains and allowed to locate the illuminating source which coincides with the center of the mm disk. The spectral energy distribution of the YSO embedded in CB26 resembles that of a Class I source with a luminosity of 0.5L⊙. Using the premain-sequence evolutionary tracks and the stellar mass inferred from the rotation [ ′′ ] |
| Databáze: | OpenAIRE |
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