| THE ASTROPHYSICAL JOURNAL, 556 958969, 2001 August 1 V (2007) | |||||||||||||
Abstract | |||||||||||||
| We present Hubble Space Telescope near-infrared camera and multiobject spectrometer observations of the reection nebulosity associated with the T Tauri star HH 30. The images show the scattered-light pattern characteristic of a highly inclined, optically thick disk with a prominent dust lane whose width decreases with increasing wavelength. The reected nebulosity exhibits a lateral asymmetry in the upper lobe on the opposite side to that reported in previously published Wide Field Planetary Camera 2 images. The radiation transfer model that most closely reproduces the data has a ared accretion disk with dust grains larger than standard interstellar medium grains by a factor of approximately 2.1. A single hot spot on the stellar surface provides the necessary asymmetry to t the images and is consistent with previous modeling of the light curve and images. Photometric analysis results in an estimated extinction of however, since the photometry measures only scattered light rather than direct A Z 80 ; stellar ux, this a lower limit. The radiative transfer models require an extinction of A \ 7900. | |||||||||||||
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