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[vsnet-alert 697] CVC 127 (EG Cnc, EY Cyg, V701 Tau, BZ UMa)
- Date: Tue, 28 Jan 1997 22:42:45 -0100
- To: tvanmuns@innet.be
- From: Tonny Vanmunster <tvanmuns@innet.be>
- Subject: [vsnet-alert 697] CVC 127 (EG Cnc, EY Cyg, V701 Tau, BZ UMa)
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
BELGIAN ASTRONOMICAL SOCIETY V.V.S. - Working Group Variable Stars
Cataclysmic Variables Circular No.127 1997, January 27
Ed.: T. Vanmunster, Walhostraat 1A, 3401 Landen, BELGIUM
Internet: tvanmuns@innet.be TEL. 32-11-831504
CBA Belgium Web Page : http://vsnet.astro.columbia.edu/~cba/be
===================================================================
EG Cnc [UGWZ, 11.9v - 17:v]
===========================
N.Makiguchi, Kanagawa, Japan, Gary Poyner, Birmingham, UK and Lasse
Jensen, CBA Denmark report yet another rebrightening of EG Cnc. Their
observations have been included in the photometric summary below.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1996 12 06.760 12.9 mv Watanabe
1996 12 07.630 12.6 mv Watanabe
1996 12 21.722 13.1 mv Watanabe
1996 12 21.788 13.1 mv Watanabe
1997 01 07.024 15.7 mv Jensen
1997 01 09.142 16.26 CV Zissell
1997 01 09.193 <14.1 mv Hanson
1997 01 09.618 <15.2 mv Watanabe
1997 01 09.660 15.67 mv Koshiro
1997 01 10.068 13.17 CU Jensen
1997 01 10.181 13.8 mv Hanson
1997 01 10.212 13.7 mv Hanson
1997 01 10.260 13.8 mv Hanson
1997 01 10.292 13.5 mv Shaw
1997 01 10.492 13.8 mv Takahashi
1997 01 10.538 13.7 mv Takahashi
1997 01 10.615 13.6 mv Takahashi
1997 01 10.653 13.4 mv Itoh
1997 01 10.656 14.03 mv Koshiro
1997 01 10.748 13.7 mv Itoh
1997 01 10.760 13.96 CV Ouda
1997 01 10.84 14.7 mv Kinnunen
1997 01 10.842 13.8 mv Itoh
1997 01 11.1538 14.67 CV Zissell
1997 01 11.1632 14.0 mv Stewart
1997 01 11.251 14.4: mv Hanson
1997 01 11.298 14.7: mv Hanson
1997 01 11.581 14.6: mv Takahashi
1997 01 11.597 <14.0 mv Makiguchi
1997 01 11.610 <14.8 mv Itoh
1997 01 11.635 <14.2 mv Makiguchi
1997 01 11.694 15.29 CV Ouda
1997 01 11.946 <14.0 mv Jensen
1997 01 12.03 <14.9 mv Pietz
1997 01 12.210 <14.6 mv Hanson
1997 01 12.596 <14.2 mv Itoh
1997 01 12.659 16.27 CV Ouda
1997 01 13.678 16.21 CV Ouda
1997 01 13.917 <14.6 mv Poyner
1997 01 13.946 <13.9 mv Vanmunster
1997 01 13.98 <14.8 mv Pietz
1997 01 14.257 <14.6 mv Shaw
1997 01 14.8722 15.6 mv Jensen
1997 01 14.98 <15.0 mv Pietz
1997 01 14.990 <15.1 mv Poyner
1997 01 15.005 <15.5 mv Vanmunster
1997 01 15.453 <14.0 mv Takahashi
1997 01 15.729 16.23 CV Ouda
1997 01 15.898 <13.9 mv Vanmunster
1997 01 16.14 <13.7 mv Schmeer
1997 01 16.148 <15.2 mv Vanmunster
1997 01 16.284 16.23 CV Kemp
1997 01 16.559 15.33 CV Koshiro
1997 01 16.83 13.5 mv Pietz
1997 01 16.833 13.0: mv Schmeer
1997 01 16.936 13.6 CU Vanmunster
1997 01 16.96 13.5 mv Pietz
1997 01 17.135 13.3 mv Schmeer
1997 01 17.254 13.6 CU Vanmunster
1997 01 17.455 13.7 mv Takahashi
1997 01 17.497 13.6 mv Takahashi
1997 01 17.585 13.3 mv Itoh
1997 01 17.773 13.9 mv Watanabe
1997 01 17.8187 13.50 CU Jensen
1997 01 17.863 13.8 mv Itoh
1997 01 17.875 14.3 mv Poyner
1997 01 17.961 14.2 mv Poyner
1997 01 18.1277 14.27 CU Jensen
1997 01 18.508 <14.6 mv Hanson
1997 01 18.608 <14.0 mv Makiguchi
1997 01 19.474 <14.6 mv Hanson
1997 01 19.798 16.30 CV Ouda
1997 01 20.586 <13.7 mv Itoh
1997 01 20.669 16.18 CV Ouda
1997 01 20.88 <15.1 mv Kinnunen
1997 01 22.608 <13.5 mv Itoh
1997 01 22.665 <13.4 mv Watanabe
1997 01 24.7791 16.4 mv Jensen
1997 01 24.80 <14.1 mv Kinnunen
1997 01 25.568 <13.5 mv Itoh
1997 01 25.597 <14.0 mv Makiguchi
1997 01 25.7347 15.2 mv Jensen
1997 01 25.854 <14.1 mv Poyner
1997 01 26.2048 13.85 mv Jensen
1997 01 26.542 13.5 mv Makiguchi
1997 01 26.9583 13.7 mv Poyner
EY Cyg [UGSS, 11.4v - 15.5v]
============================
Following the outburst notification in CVC 125, we herewith present
a first photometric overview :
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 01 10.082 <14.5 mv Hanson
1997 01 11.298 14.7: mv Hanson
1997 01 11.71 12.8: mv Pietz
1997 01 11.72 12.8 mv Pietz
1997 01 11.73 12.8 mv Pietz
1997 01 11.75 12.8 mv Pietz
1997 01 11.965 13.1 mv Dyck
1997 01 12.097 12.7 mv Hanson
1997 01 12.104 12.7 mv Hanson
1997 01 12.118 12.7 mv Hanson
1997 01 12.46 12.0 mv Dyck
1997 01 12.715 12.5: mv Schmeer
1997 01 12.731 12.4 mv Schmeer
1997 01 13.71 12.1 mv Pietz
1997 01 13.740 12.0 mv Poyner
1997 01 13.751 12.1 mv Broens
1997 01 14.67 12.1 mv Kinnunen
1997 01 14.7020 11.88 CU Jensen
1997 01 14.71 11.5 mv Pietz
1997 01 14.754 11.7 mv Poyner
1997 01 15.71 11.5 mv Pietz
1997 01 15.778 12.0 mv Broens
1997 01 16.67 12.0 mv Kinnunen
1997 01 16.72 11.5 mv Pietz
1997 01 17.757 12.1 mv Poyner
1997 01 18.546 12.1 mv Hanson
1997 01 19.093 12.3: mv Hanson
1997 01 20.65 12.1 mv Kinnunen
1997 01 24.081 <12.2 mv Hanson
1997 01 24.68 12.8 mv Kinnunen
1997 01 25.749 12.8 mv Poyner
1997 01 25.079 <12.5 mv Hanson
V701 Tau [UGSU, 15.0p - <21p]
=============================
The V701 Tau outburst, announced in CVC 124, is a superoutburst,
according to time-series CCD photometry observations at Ouda
Station, Japan and CBA Belgium Observatory.
D. Nogami, Ouda Observatory, Japan reports : "Our 3hr CCD photometry
on 1997 January 12 at Ouda Station revealed fully developed super-
humps with an amplitude of about 0.2 mag in V701 Tau, proving the
current outburst to be a superoutburst next to the one observed in
1995 December/1996 January (see, T. Kato, vsnet-alert 303). This
suggests that the recurrence time of the superoutburst (supercycle)
in V701 Tau is about 370 days (or 1/N)."
Independent CCD photometry at CBA Belgium on January 11/12 and
January 12/13 confirms these findings. The short duration of the
observing sessions, combined with poor atmospheric conditions,
prevented the deduction of a secure superhump period.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 01 03.044 <14.7 mv Poyner
1997 01 11.941 15.7 CU Vanmunster
1997 01 12.0282 15.6 CU Vanmunster
1997 01 12.505 15.35 CV Ouda
1997 01 12.782 15.7 CU Vanmunster
1997 01 12.847 15.7 CU Vanmunster
1997 01 13.461 15.46 CV Ouda
1997 01 13.770 15.9 CU Vanmunster
1997 01 13.861 14.9 mv Poyner
1997 01 13.965 15.8 CU Vanmunster
1997 01 14.7444 15.32 CU Jensen
1997 01 14.951 15.3 mv Poyner
1997 01 15.469 15.53 CV Ouda
1997 01 25.817 <15.3 mv Poyner
BZ UMa [UGSU:, 10.5v - 17.8v]
=============================
Unfiltered time-series CCD photometry at the CBA Belgium Observatory
(using a 25-cm f/6.3 telescope and ST-7 CCD) on January 09/10 and
January 11/12 did not reveal any superhumps. We therefore must
conclude that the present outburst has again been a normal one.
The variable has now returned to minimum light.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 01 09.194 14.4: mv Hanson
1997 01 09.196 14.3: mv Hanson
1997 01 09.202 14.2 mv Hanson
1997 01 09.206 14.1 mv Hanson
1997 01 09.211 14.0 mv Hanson
1997 01 09.214 14.0 mv Hanson
1997 01 09.217 13.9 mv Hanson
1997 01 09.221 13.8 mv Hanson
1997 01 09.224 13.7 mv Hanson
1997 01 09.229 13.6 mv Hanson
1997 01 09.232 13.5 mv Hanson
1997 01 09.235 13.4 mv Hanson
1997 01 09.241 13.3 mv Hanson
1997 01 09.244 13.2 mv Hanson
1997 01 09.247 13.2 mv Hanson
1997 01 09.250 13.1 mv Hanson
1997 01 09.253 13.1 mv Hanson
1997 01 09.256 13.0 mv Hanson
1997 01 09.262 12.9 mv Hanson
1997 01 09.266 12.9 mv Hanson
1997 01 09.272 12.9 mv Hanson
1997 01 09.277 12.8 mv Hanson
1997 01 09.531 11.7 mv Hanson
1997 01 09.560 11.6 mv Hanson
1997 01 09.749 11.49 CU Jensen
1997 01 09.791 11.9 CU Vanmunster
1997 01 09.820 11.9 CU Vanmunster
1997 01 09.945 11.5 mv Jensen
1997 01 10.083 11.4 mv Hanson
1997 01 10.174 11.5 mv Hanson
1997 01 10.210 11.9 mv Hanson
1997 01 10.262 11.7 mv Hanson
1997 01 10.724 12.59 mv Koshiro
1997 01 10.7861 12.23 CU Jensen
1997 01 10.825 12.5 mv Itoh
1997 01 10.843 12.62 CV Ouda
1997 01 10.83 12.3 mv Kinnunen
1997 01 11.1646 13.0 mv Scovil
1997 01 11.1819 12.3 mv Stewart
1997 01 11.1854 12.6 mv Bortle
1997 01 11.246 12.7 mv Hanson
1997 01 11.283 12.9 mv Hanson
1997 01 11.631 12.5 mv Makiguchi
1997 01 11.765 13.9 CU Vanmunster
1997 01 11.81 13.9 mv Pietz
1997 01 11.812 13.7 mv Jensen
1997 01 11.85 14.0 mv Pietz
1997 01 11.88 13.8 mv Pietz
1997 01 11.93 13.9 mv Pietz
1997 01 11.934 14.2 CU Vanmunster
1997 01 11.97 14.0 mv Pietz
1997 01 11.984 14.2 mv Vanmunster
1997 01 12.00 14.3 mv Pietz
1997 01 12.109 13.8 mv Hanson
1997 01 12.817 15.07 CV Ouda
1997 01 13.0465 15.5 mv Bortle
1997 01 13.809 15.66 CV Ouda
1997 01 13.846 <13.7 mv Vanmunster
1997 01 13.868 <15.4 mv Poyner
1997 01 14.7354 15.75 CU Jensen
1997 01 14.960 <15.4 mv Poyner
1997 01 15.821 15.89 CV Ouda
1997 01 15.834 <14.5 mv Broens
1997 01 16.147 <13.7 mv Vanmunster
1997 01 17.904 <13.7 mv Poyner
Tonny Vanmunster
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