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Spectroscopic study of stars with dusty disks

Published online by Cambridge University Press:  26 May 2016

T. Sivarani  and
M. Parthasarathy
T. Sivarani
Affiliation:
Indian Institute of Astrophysics, Bangalore, India
M. Parthasarathy
Affiliation:
Indian Institute of Astrophysics, Bangalore, India

Abstract

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We have selected several stars with far-IR (IRAS) fluxes indicating the presence of circumstellar dust shells and disks. In this paper we present an analysis of the spectra of these stars. In several of these stars we find evidence for gaseous envelopes in addition to dusty disks. In some of these stars we find complex and variable Ha profiles indicating the variations in the circumstellar envelopes and disks.

Type
Part IV: Protoplanetary and β Pic disks
Information
Symposium - International Astronomical Union , Volume 202: Planetary Systems in the Universe – Observation, Formation and Evolution , 2004 , pp. 371 - 374
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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