A survey and analysis of Spitzer infrared spectrograph spectra of T Tauri stars in Taurus
We present mid-infrared spectra of T Tauri stars in the Taurus star-forming region obtained with the Spitzer Infrared Spectrograph (IRS). For the first time, the 5-36 μm spectra of a large sample of T Tauri stars belonging to the same star-forming region is studied, revealing details of the mid-infrared excess due to dust in circumstellar disks. We analyze common features and differences in the mid-IR spectra based on disk structure, dust grain properties, and the presence of companions. Our analysis encompasses spectral energy distributions from the optical to the far-infrared, a morphological sequence based on the IRS spectra, and spectral indices in IRS wave bands representative of continuum emission. By comparing the observed spectra to a grid of accretion disk models, we infer some basic disk properties for our sample of T Tauri stars and find additional evidence for dust settling. © 2006. The American Astronomical Society. All rights reserved.
Astrophysical Journal, Supplement Series
Furlan, E.; Hartmann, L.; Calvet, N.; D'Alessio, P.; Franco-Hernández, R.; Forrest, W. J.; Watson, D. M.; Uchida, K. I.; Sargent, B.; Green, J. D.; Keller, L. D.; and Herter, T. L., "A survey and analysis of Spitzer infrared spectrograph spectra of T Tauri stars in Taurus" (2006). Faculty Articles Indexed in Scopus. 1848.