Deep fading event in the cataclysmic variable TT Arietis
Active Dates: Oct. 3, 2009 – Oct. 13, 2009
Abstract:
The VY Sculptoris-class cataclysmic variable TT Ari has begun its first large decline since its deep minimum of 1982-1985. Observations of TT Ari are urgently requested. The 1982-1985 event reached a minimum of m(vis)=15.5, where it remained for approximately 3.5 years.
Justification:
Observers are asked to closely follow TT Ari through its current decline, and to continue monitoring TT Ari if and when it reaches a stable minimum. All observations including visual estimates, CCD photometry, and CCD time-series are needed; visual positive and fainter-than estimates are both important. Because of its unpredictable nature, continuous observations of TT Ari are urgently needed. Time series observations made throughout the decline and eventual minimum are urgently needed.
Requested Data Types:
Photometry
Spectroscopy Lines:
No spectroscopy lines provided
Photometry Filters:
No photometry filters provided
Comparison Stars:
No comparison stars provided
Co-Authorship
Observers are not eligible for co-authorship.
Additional Observer Input:
Not provided
Additional Submission Location:
Not provided
Forum URL
N/A
Notes:
Principal Investigator: N/A; Imported Campaign (Alert Notice #408)