Abstract Details
| Name: Kumar Venkataramani Affiliation: Physical Reseach Laboratory Conference ID: ASI2016_865 Title : Study of Molecular Gas Emissions from Cometary Coma Authors and Co-Authors : Kumar Venkataramani(PRL, IIT-Gn) Shashikiran Ganesh(PRL) U.C.Joshi(PRL) Satyesh Ghetiya(IIST, PRL) K.S.Baliyan(PRL) Abstract Type : Oral Abstract Category : Sun and the Solar System Abstract : The cometary coma is a mixture of​ gas and dust particles. It is rich in carbon-chain molecules, amino group, molecular hydrogen, cyanide molecules, atomic oxygen and various other products. Cometary spectra in the visible region are dominated by the presence of strong emission lines from these molecules. By investigating these emission lines and estimating the production rates and scale lengths of these molecules, we can get a better understanding of evolution of the cometary coma as it travels in its orbit around the sun. The optical spectra of some of the long period comets e.g. C/2014 Q2(Lovejoy), C/2013US10 (Catalina) and C/2013 X1(PANSTARRS) were obtained using a low resolution spectrograph mounted on the 0.5m telescope at the Mount Abu Infra-Red Observatory. Observations were carried out at different epochs and hence different helio-centric distances. The spectra of these comets were studied to model the spatial distribution of the molecules. We would like to present some of the interesting results of this study. |