[vsnet-chat 176] Re: V1504 Cyg

[Tonny Vanmunster <tvanmuns@innet.be>]

Hi,

Upon returning from holiday, I noticed Erik Kuulkers request for more
information on the outburst activity of V1504 Cyg.

>Does anyone have more information on this star, or are there extensive 
>observations available during long (super?) outbursts, which may point to
>the existence of superhumps?

I found the following data on V1504 Cyg in my Outburst Activity Database.
You will notice references to publications which (may) contain further
information about the duration and type of outburst. From visual observations,
it was already apparent that V1504 Cyg would be a good UGSU-type candidate
(confirmed afterwards by Ouda observatory in Oct 1996).

Name            RA (J2000.0)    Decl.      Type Mag range
V1504 CYG	19 28 57.	+43 05 36. UGSU	13.5p	17.7p		

Outburst date   JD red  Max mag Observer
Reference
-	-	List of outbursts<1969 in [Mitt.Ver.Sterne,Feb.1987]	
1987.0807	47015	13.9	Kato	                                        VSNET
1987.1013	47082	14.0	Kato	                                        VSNET
1987.1107	47107	13.8	Kato	                                        VSNET
1991.1031	48561	14.4	Moriyama	
1994.0531	49504	14.2	Vanmunster (conf. Kunjaya CCD). Normal outburst	CVC 5
1994.0610	49514	13.4	Vanmunster (conf. Poyner). Supermaximum	        CVC 6
1994.0916	49612	14.9	Szentasko	                                VSNET
1994.1004	49630	14.3	Szentasko	                                VSNET
1994.1027	49653	13.8	Poyner, Broens, Jensen	                        VSNET
1994.1102	49659	14.2	Broens, Jensen	                                AAVSO
Circ. 290
1995.0307	49784	14.0	Jensen	                                        AAVSO
Circ. 294
1995.0526	49864	14.5	Jensen	                                        AAVSO
Circ. 296
1995.0705	49904	13.9	Jensen	                                        AAVSO
Circ. 298
1995.0824	49954	14.5	Jensen	                                        AAVSO
Circ. 299
1995.0914	49975	14.5	Jensen	                                        VSNET
1995.1016	50007	13.8	Pietz, Jensen	                                AAVSO
Circ. 301
1996.0127	50110	14.3	Jensen	                                        AAVSO
Circ. 304
1996.0515	50219	14.6	Poyner	                                        AAVSO
Circ. 308
1996.0614	50249	15.0	Griese	                                        AAVSO
Circ. 309
1996.0816	50312	15.3	Poyner	                                        AAVSO
Circ. 311
1996.0912	50339	14.8	Broens, Jensen, Moriyama, Poyner	        VSNET Circ. 9-1996
1996.1004	50361	14.8	Broens, Poyner. Superoutburst	                AAVSO
Circ. 312

Kind regards,
Tonny Vanmunster
CBA Belgium Observatory

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