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Lithium Abundance and Spacial Distribution of T Tauri Stars

Published online by Cambridge University Press:  07 August 2017

Jane Gregorio-Hetem  and
Jacques R.D. Lépine
Jane Gregorio-Hetem
Affiliation:
Instituto Astron⊚mico e Geofísico, Universidade de São Paulo CP 9638, 01065 São Paulo, Brasil
Jacques R.D. Lépine
Affiliation:
Instituto Astron⊚mico e Geofísico, Universidade de São Paulo CP 9638, 01065 São Paulo, Brasil

Abstract

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We determined temperatures and Lithium 6707 A resonance line equivalent width of a sample of 62 T Tauri stars. Lithium abundances were then estimated by using a grid of curves of growth. The lithium abundance is shown to decrease with the distance of the stars to the nearest dense core of a molecular cloud. This effect is interpreted as being due to the ages of the stars, the youngest ones being closer to still active star formation regions.

Type
Near Stellar Environments
Information
Symposium - International Astronomical Union , Volume 150: Astrochemistry of Cosmic Phenomena , 1992 , pp. 395 - 397
Copyright
Copyright © Kluwer 1992 

References

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