Skip to main content

T Tauri campaign - call for spectra

We recently released a significant update to the backend systems for the AAVSO website. While most of the bugs introduced by this update have been fixed, there may still be problems we haven't fixed. If you run into a problem, please email webmaster@aavso.org
Robin Leadbeater's picture
Robin Leadbeater
Offline
Joined: 2012-10-08

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

A first look with the Star Analyser
Robin Leadbeater's picture
Robin Leadbeater
Offline
Joined: 2012-10-08

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

A remarkable large, fast transient in the spectrum of DN Tau
Robin Leadbeater's picture
Robin Leadbeater
Offline
Joined: 2012-10-08

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

Great catch! Well
Ken4optics's picture
Ken4optics
Offline
Joined: 2012-04-02

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
uis01's picture
uis01
Offline
Joined: 2010-07-25

I agree this is a great catch Robin.  This adds to the possible projects that one can do with this setup.

 

Revised T-Tauri spectroscopic programme
Robin Leadbeater's picture
Robin Leadbeater
Offline
Joined: 2012-10-08

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 

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484