Colors of Classical T Tauri Stars in Taurus Derived from Spitzer Infrared Spectrograph Spectra: Indication of Dust Settling
Abstract
We analyzed Spitzer Infrared Spectrograph data of a representative sample of classical T Tauri stars in the Taurus star-forming region by computing color indices in wave bands that characterize the continuum emission from dust in circumstellar disks. We compared these indices to those derived from a grid of accretion disk models with varying inclination angles, mass accretion rates, and amounts of dust settling. We conclude that most T Tauri stars in our sample have experienced some degree of dust settling and grain growth in their disks, indicating disk evolution.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 2005
- DOI:
- 10.1086/432540
- Bibcode:
- 2005ApJ...628L..65F
- Keywords:
-
- Stars: Circumstellar Matter;
- Infrared: Stars;
- Stars: Planetary Systems: Protoplanetary Disks;
- Stars: Pre-Main-Sequence