Effects of dust on equivalent widths of spectral lines formed in expanding spherically symmetric shells

dc.contributor.author	Peraiah, A
dc.contributor.author	Ingalgi, M. F
dc.date.accessioned	2006-11-27T06:01:54Z
dc.date.available	2006-11-27T06:01:54Z
dc.date.issued	1990-03
dc.identifier.citation	BASI, Vol. 18, No. 1 & 2, pp. 17-32	en
dc.identifier.uri	http://hdl.handle.net/2248/1312
dc.description.abstract	A study is made of the effects of the presence of dust and radial expansion of the spherical shells around stars on the equivalent widths of the lines formed in such shells. A non-LTE, two-level atom approximation is considered, and it is assumed that the dust scatters isotropically; 30 shells and an optical depth of 300 are considered. Two types of expanding shells are treated: with velocity gradients and without velocity gradients. Depending upon the parameters used, the equivalent widths change considerably	en
dc.format.extent	907808 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.publisher	Astronomical Society of India	en
dc.subject	Radiative transfer	en
dc.subject	Spectral line formation	en
dc.subject	Equivalent width-dust	en
dc.title	Effects of dust on equivalent widths of spectral lines formed in expanding spherically symmetric shells	en
dc.type	Article	en