TT Ari

Alert Notice 608: TT Ari monitoring requested for VLA observations

December 1, 2017: Dr. Deanne Coppejans (Northwestern University) and colleagues have requested AAVSO assistance in monitoring the cataclysmic variable TT Ari in support of observations scheduled to be made with the Very Large Array (VLA) in December 2017.

Dr. Coppejans writes:

Special Notice #75: Monitoring of TT Ari in support of MOST observations

October 22, 2007: The Microvariability and Oscillations of Stars (MOST) Satellite will conduct a targeted photometric observing campaign on the cataclysmic variable TT Ari, beginning 2007 October 23 UT (JD 2454397) and concluding on 2007 October 28 (JD 2454402). This observing program was proposed by a group of Austrian amateur astronomers who proposed to the "MOST fuer Alle" program of the University of Vienna, the Austrian partner project of the MOST collaboration's "My Own Space Telescope" program for Canadian observers.

Alert Notice 147: Probable nova in Sagittarius AND Special multiwavelength monitoring of 0201+14 TT Arietis

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
Tel.617-354-0484 FAX 617-354-0665
    

AAVSO ALERT NOTICE 147 (August 1,1991)

PROBABLE NOVA IN SAGITTARIUS

Alert Notice 146: Special multiwavelength monitoring of 0201+14 TT Arietis

THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 146 (July 19,1991)

SPECIAL MULTIWAVELENGTH MONITORING OF 0201+14 TT ARIETIS

Alert Notice 408: Deep fading event in the cataclysmic variable TT Arietis

October 13, 2009
 

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. 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.