New publication based on ARAS spectra
Posted: Fri Jun 15, 2018 4:42 pm
The study of AG Dra outburst in 2017 is now published
https://pos.sissa.it/315/060/pdf
It is based on a nearly daily coverage of the outburst by ARAS observers, spectra gathered in ARAS database for eruptive stars
http://www.astrosurf.com/aras/Aras_Data ... iotics.htm
Note that the authors used Plotspectra to compute the equivalent widths
An interesting discussion about Iijima's temperature, notably the correction of the result according to orbital phase
It is necessary to subtract the orbital variations to investigate the WD temperature changes due to outburst activity of AG Dra. For this purpose, we fitted the variation of the Hβ and HeI λ 4471Å EWs during quiescence stages by sinusoidal functions and the residuals after subtraction of the obtained fits from original values were used for analysis of the WD temperature behaviour.
Thanks to all observers for the very valuable data. Current outburst of AG Dra is now ending. We undergo the monitoring at a lower cadency (8-10 days) in order to study the behavior of AG Dra between outburts
All the best,
François Teyssier
https://pos.sissa.it/315/060/pdf
It is based on a nearly daily coverage of the outburst by ARAS observers, spectra gathered in ARAS database for eruptive stars
http://www.astrosurf.com/aras/Aras_Data ... iotics.htm
Note that the authors used Plotspectra to compute the equivalent widths
An interesting discussion about Iijima's temperature, notably the correction of the result according to orbital phase
It is necessary to subtract the orbital variations to investigate the WD temperature changes due to outburst activity of AG Dra. For this purpose, we fitted the variation of the Hβ and HeI λ 4471Å EWs during quiescence stages by sinusoidal functions and the residuals after subtraction of the obtained fits from original values were used for analysis of the WD temperature behaviour.
Thanks to all observers for the very valuable data. Current outburst of AG Dra is now ending. We undergo the monitoring at a lower cadency (8-10 days) in order to study the behavior of AG Dra between outburts
All the best,
François Teyssier