Wind and Disk Diagnostics in PMS Stars. A Critical Analysis

Author: Ortiz E.   Eiroa C.  

Publisher: Springer Publishing Company

ISSN: 0004-640X

Source: Astrophysics and Space Science, Vol.263, Iss.1-4, 1998-01, pp. : 227-230

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Abstract

The relationships among traditional wind and disk diagnostics - Hα and [OI]6300 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 ΔL_IR/L_ph, a parameter related to the origin of the IR excesses.