Age Estimation And Mass Functions of TTauri Stars in The Taurus Auriga Molecular Cloud

Abstract

In this work the present day mass functions (PDMF) of T-Tauri Stars (TTS) which are in the pre-main sequence (PMS) evolutionary phase of their evolution in the Taurus-Auriga Molecular Cloud Complex have been calculated. For this purpose, by applying our modied stellar evolutionary code, stellar models in the mass range 0.1 - 2.5 M⊙ are used to determine the mass and age mass of TTS. The obtained mass function is compared with the mass function of Miller & Scalo (1979). The age found for TTS is around 1 - 3⁶ × 10 yr and the mass function is about 0.644±0.348. From these results, we have calculated the stellar birthrate as about 1.3 × 10⁻ ⁷ M⊙ yr⁻¹ in this region.