Time series of optical spectra of Nova V659 Sct
Abstract
With our robotic 1.2 m TIGRE telescope, we were able to obtain eight optical spectra with intermediate resolution (R = 20,000) of the Nova V659 Sct during different phases of its outburst. We present a list of the lines found in the Nova spectra. The most common features are H I, O I, Na I, Fe II and Ca II. Studying the spectral evolution of the strong features we found that the absorption features move to higher expansion velocities before disappearing and the emission features show (different) asymmetries. Thanks to the intermediate spectral resolution we identified and analysed the interstellar medium absorption features present in the spectra. We detected atomic absorption features of Na I and Ca II. The sodium D lines show more complex substructures with three main absorption features at around a velocity of -10, 30 and 85 km/s. We identified several DIBs in the Nova V659 Sct spectra and determined their velocities and equivalent widths.
Keywords
Cite
@article{arxiv.2006.14052,
title = {Time series of optical spectra of Nova V659 Sct},
author = {Dennis Jack and Klaus-Peter Schröder and Philippe Eenens and Uwe Wolter and José Nicolás González-Pérez and Jürgen H. M. M. Schmitt and Peter H. Hauschildt},
journal= {arXiv preprint arXiv:2006.14052},
year = {2020}
}
Comments
Accepted for publication in Astronomical Notes, 11 pages, 8 figures