We have monitored the millimeter and submillimeter emission from the young stellar object GG Tau, a T Tauri binary system surrounded by a massive circumbinary disk. We find that between 1992 and 1994, the flux has increased significantly at 800, 1100, and 1300 microns, resulting in a steepening of the observed spectral energy distribution at those wavelengths. Such an increase appears consistent with a modest increase in disk luminosity (a factor of two). The increase in the effective disk temperature might arise from a slight change in the disk heating processes. Alternatively, the flux increase may reflect a sudden change in the underlying dust optical properties.
@article{arxiv.astro-ph/9607159,
title = {A Sub-millimeterwave ``Flare'' from GG Tau?},
author = {Gerald H. Moriarty-Schieven and Harold M. Butner},
journal= {arXiv preprint arXiv:astro-ph/9607159},
year = {2009}
}
Comments
15 pages, AASTex v.4.0 format, four postscript figures, four tables, to appear in The Astrophysical Journal