Professor Ranjan Gupta

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Author: search.filters.author.Gupta, RanjanEnd date: 1999

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    Interstellar extinction by porous grains
    (Astron. Astrophys., 1999-04-23) Vaidya, D.B.; Gupta, Ranjan
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    A comparison of synthetic and observed spectra for G-K dwarfs using arti
    (Astron. Astrophys, 1967-01-18) Gulati, R.K; Gupta, Ranjan; Rao, N.K
    A library of synthetic spectra, based on Kurucz model atmospheres, has been used to compare the spectroscopic observations in thewavelength range 4850-5384 A by using statistical and supervised arti cial neural network methods. The effective temperatures assigned by these methods for G-K dwarfs are compared with those given in Gray and Corbally (1994) and found to be closely matching their calibration curve. This result provides a promising new technique for determination of fundamental stellar atmospheric parameters on the basis of comparison between the model generated synthetic spectra and observed stellar spectra.