Fri, 11/30/2012 - 12:49
The ARAS group preliminary results in response to this request can be found here
http://www.astrosurf.com/aras/Aras_TTauri/T_Tauri_Campaign.html
I am currently looking at the feasibility of using the Star Analyser to meet one of the aspects of the project.
http://www.spectro-aras.com/forum/viewtopic.php?f=28&t=482
Cheers
Robin
Here are the results of a first look at the the T Tauri campaign targets using the Star Analyser
http://www.spectro-aras.com/forum/viewtopic.php?f=28&t=502
Cheers
Robin
On 2012-12-09 I detected a remarkable transient in the spectrum of DN Tau using the Star Analyser.
88 x 20 sec spectra show a rise in total flux (4000-7500A) of ~130% in just 6 minutes, followed by a rapid drop over the following 6 minutes and a continuing slow fall over the next 40 minutes to ~20% of the initial level. The flux increase was greatest at the blue end (a 300% increase at 4500A)
More details here
http://www.threehillsobservatory.co.uk/ ... ra_42a.htm
and a description of the technique here
http://www.threehillsobservatory.co.uk/ ... tra_42.htm
Cheers
Robin
Well
Great catch!
Well done.
This shows clearly what can be achieved with a simple grating set-up.
Obviously very capable of detecting transient phenonoma.
We should be more active in this area........
I agree this is a great catch Robin. This adds to the possible projects that one can do with this setup.
Based on an analysis of the spectroscopic data collected on the T-Tauri tagets, the revised ARAS programme for the upcoming season can be found here.
http://www.astrosurf.com/aras/Aras_TTauri/T_Tauri_Campaign.html
I have made several further spectroscopic observations of DN Tau using a Star Analyser but have seen no further fast transient events.
Robin
www.threehillsobservatory.co.uk