Abstract
Results of studies of the surface-brightness distributions of a group of young stellar objects located within 16″ of the star θ1 Ori C are presented. Isophotes around each proplyd are constructed using violet, red, and near-infrared images. No regularity in the sizes of the diametral cross sections of the proplyds in the various photometric bands is observed. The measured relative intensities are converted to absolute fluxes, and the absolute luminosities of the brightest parts of the disks and of the disk peripheries are estimated. The ratio of the semi-major to the semi-minor axes of the objects range from 1.5 to 2.5. The maximum lengths of the proplyd tails in various filters range from 300 to 700 AU. They become shorter with decreasing distance from the illuminating star, possibly due to enhanced dissipation of the disk, due to the growth in the role of photovaporization.
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Russian Text © G.B. Mamedkhanova, N.Z. Ismailov, 2019, published in Astronomicheskii Zhurnal, 2019, Vol. 96, No. 3, pp. 205–218.
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Mamedkhanova, G.B., Ismailov, N.Z. Surface Photometry of Proplyds in the Vicinity of θ1 Ori C. Astron. Rep. 63, 190–202 (2019). https://doi.org/10.1134/S1063772919030065
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DOI: https://doi.org/10.1134/S1063772919030065