Wind and Disk Diagnostics in PMS Stars. A Critical Analysis

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

The relationships among traditional wind and disk diagnostics - Hα and [OI]λ6300 lines and IR luminosity excesses, respectively - and star parameters are critically analysed. The total sample includes 109 PMS stars - 20 Weak-line T Tauri (WTTS), 45 Classical T Tauri (CTTS) and 44 HAeBe stars-. Our results suggest that Hα is neither a wind nor an accretion tracer. Hα and [OI] emissions seem to correlate very well with the photospheric luminosity and not with ΔLIR/Lph, a parameter related to the origin of the IR excesses.

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