Publications (8)
Optical spectroscopy of the recurrent nova RS Ophiuchi - from the outburst of 2006 to quiescence
Anindita Mondal, G. C. Anupama, U. S. Kamath +3
Optical spectra of the 2006 outburst of RS Ophiuchi beginning one day after discovery to over a year after the outburst are presented here. The spectral evolution is found to be si…
Identification of metal-poor stars using the artificial neural network
Sunetra Giridhar, Aruna Goswami, Andrea Kunder +2
Identification of metal-poor stars among field stars is extremely useful for studying the structure and evolution of the Galaxy and of external galaxies. We search for metal-poor s…
Analysis of mutual events of Galilean satellites observed from VBO during 2014-15
R. Vasundhara, G. Selvakumar, P. Anbazhagan
Results of analysis of 23 events of the 2014-2015 mutual event series from the Vainu Bappu Observatory are presented. Our intensity distribution model for the eclipsed/occulted sat…
Clustering of low mass stars around Herbig Be star IL Cep -- Evidence of "Rocket Effect" using Gaia EDR3 ?
R. Arun, Blesson Mathew, G. Maheswar +7
We study the formation and the kinematic evolution of the early type Herbig Be star IL Cep and its environment. The young star is a member of the Cep OB3 association, at a distance…
Spectroscopic and geometrical evolution of the ejecta of the classical nova ASASSN-18fv
M. Pavana, A. Raj, T. Bohlsen +3
The optical spectroscopic observations of ASASSN-18fv observed from 2018 March 24 to 2019 Jan 26 are presented. The optical spectra are obtained from Mirranook, Vainu Bappu and Sou…
Optical spectroscopic and polarization properties of 2011 outburst of the recurrent nova T Pyxidis
M. Pavana, Ramya M Anche, G. C. Anupama +2
We study the spectroscopic and ionized structural evolution of T Pyx during its 2011 outburst, and also study the variation in degree of polarization during its early phase. Optica…
Chemical composition of A--F type post-AGB candidates
Sunetra Giridhar, R. Molina, A. Arellano Ferro +1
An abundance analysis has been conducted for a sample of nine post-AGB candidate stars; eight of them have not been explored before. We find four very promising objects like HD 105…
Multi-wavelength observations of multiple eruptions of the recurrent nova M31N 2008-12a
Judhajeet Basu, M. Pavana, G. C. Anupama +8
We report the optical, UV, and soft X-ray observations of the eruptions of the recurrent nova M31N 2008-12a. We infer a steady decrease in the accretion rate over the y…