Browsing by Author "Raghunath, G"

Now showing items 3-5 of 5

Lines Formed in Slowly Expanding Thin Spherical Shell

Peraiah, A; Raghunath, G; Nagendra, K. N (Indian Institute of Astrophysics, Bangalore, 1980)

We have investigated how an optically thin spherical shell with small velocities change the profiles and equivalent widths of the lines. We have employed several types of variations in density, velocity of expansion and ...
Optical depth effects on the formation of spectral lines in rotating and expanding spherical atmospheres

Peraiah, A; Raghunath, G; Nagendra, K. N (Indian Academy of Sciences, 1981)

The effect of high optical depths and large rotational velocities on the spectral lines in rotating and radial expanding spherical shells is investigated. It is assumed that the outer radius of the shell is three times the ...
Rotational Effects on line Source Function

Peraiah, A; Raghunath, G (Indian Institute of Astrophysics, Bangalore, 1980)

The effects of rotation are investigated on the source functions in an expanding atmosphere. We have considered a non-LTE two-level atom in an extended atmosphere. We have also made use of von Zeipel`s theorem in giving ...

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