Abstract Details
| Name: Supriyo Ghosh Affiliation: SNBNCBS Conference ID: ASI2016_706 Title : Spectro-photometric Studies of MASTER Optical Transient J183012.04+093342.6 : a OH/IR star in the Constellation Ophiuchus Authors and Co-Authors : Supriyo Ghosh$^{1}$, Soumen Mondal$^{1}$, Ramkrishna Das$^{1}$, Ashok N. M.$^{2}$, Banerjee D. P. K.$^{2}$ \affil{$^{1}$ S. N. Bose National Centre for Basic Sciences, Salt Lake, Kolkata-700 098, India \\$^{2}$Physical Research Laboratory, Navrangpura, Ahmedabad-380 009, India } Abstract Type : Poster Abstract Category : Stars, The Milky Way Galaxy and its neighbours Abstract : We present here optical/near-IR photometric and spectroscopic observations of the MASTER bright optical Transient J183012.04+093342.6 - a OH/IR star, using the NICMOS-3 on the 1.2m IR Telescope at Mt. Abu, and HFOSC and TIRSPEC on the 2m Himalayan Chandra Telescope (HCT) at Hanle. The presence of atomic/molecular features like NaI, CaI, TiO, VO, CO overtone and water bands in optical/near-IR spectra signify that the object is a cool M-type star. We study the phase-dependent optical/near-IR spectral variability of the source and determined fundamental parameters like temperature, luminosity class at different variability phases. In this presentation, we shall discuss our spectro-photometric observations and results on this OH/IR star. |