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[vsnet-alert 879] CVC 136 (RU LMi, S 10932, AK Cnc, DV UMa, V795 Cyg, SX LMi)
- Date: Mon, 5 May 1997 23:06:08 +0200 (MET DST)
- To: tvanmuns@innet.be
- From: Tonny Vanmunster <tvanmuns@innet.be>
- Subject: [vsnet-alert 879] CVC 136 (RU LMi, S 10932, AK Cnc, DV UMa, V795 Cyg, SX LMi)
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
BELGIAN ASTRONOMICAL SOCIETY V.V.S. - Working Group Variable Stars
Cataclysmic Variables Circular No.136 1997, May 05
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
===================================================================
RU LMi [UG, 13.8p - 19.5p]
==========================
Gene Hanson, Az, USA and Timo Kinnunen, Finland independently
report an outburst detection of this CVAP object. Available
observations :
1997 May 3.90 UT, <15.4 (T. Kinnunen, visual);
May 4.88 UT, 14.9 (T. Kinnunen);
May 5.226 UT, 14.8 (G. Hanson, seq: AAVSO, visual);
RU LMi was discovered as a faint blue variable star (Ton 1143) at
Tonantzintla Observatory. According to our information, the last
confirmed outburst was seen on March 8, 1997 when RU LMi reached
mag 14.6. It was a short outburst, lasting 3 days only.
This is a poorly studied object, so it certainly deserves an
intensive monitoring. The orbital period of RU LMi is 6.02h.
S 10932 [UG:+E, 13.4 - 18.5p]
=============================
The S 10932 Com outburst, reported in CVC 135, clearly was a short
outburst, as indicated by the observations below. Two CBA stations
(Robert Fried - CBA Braeside and Tonny Vanmunster - CBA Belgium)
followed the outburst by differential CCD photometry. From their data,
mid-eclipse times were derived. After applying heliocentric correc-
tions, the resulting times clearly indicate that the ephemerides
given in CVC 135 is still applicable without further refinements.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 04 12.053 15.7 CU Jensen
1997 04 15.031 <15.0 CU Jensen
1997 04 23.889 14.1 CU Vanmunster
1997 04 23.909 14.1 mv Poyner - Correction to CVC 135
1997 04 23.964 14.1 mv Poyner - Correction to CVC 135
1997 04 24.670 <14.41 CV Koshiro
1997 04 24.693 15.39 CV Ouda
1997 04 25.172 <15.2 mv Hanson
1997 04 25.702 15.82 CV Ouda
1997 04 25.84 <15.5 mv Kinnunen
1997 04 26.246 <16.1 mv Hanson
1997 04 26.87 <15.5 mv Kinnunen
1997 04 27.199 <15.2 mv Hanson
AK Cnc [UGSU, 13p - <17p]
=========================
This outburst, first mentioned in CVC 135, was not intensively
monitored. It therefore is impossible to determine whether this
was a superoutburst or normal outburst.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 04 22.906 <13.7 mv Poyner
1997 04 23.882 13.2 mv Poyner
1997 04 23.914 13.1 CU Vanmunster
1997 04 23.914 13.2 mv Poyner
1997 04 24.201 13.8: mv Burrows
1997 04 29.881 14.7: mv Poyner
DV UMa [UGSU, 15.4v - 20.6v]
============================
We received several observations of the present outburst, which
are summarized below, including lots of mid-eclipse timings, made
both visually and by CCD techniques.
We also refer to the CBA Web site (http://vsnet.astro.columbia.edu/~cba)
for a more detailed discussion and light curve of DV UMa.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 04 07.887 <15.2 mv Poyner
1997 04 07.890 <14.8 mv Vanmunster
1997 04 08.849 13.9 mv Kinnunen
1997 04 08.910 13.9 mv Kinnunen
1997 04 08.931 14.0 mv Vanmunster
1997 04 09.889 14.6 mv Poyner
1997 04 09.896 14.04 CU Jensen
1997 04 10.028 14.5 mv Poyner
1997 04 10.486 14.55 CU Koshiro
1997 04 10.629 14.52 CV Ouda
1997 04 10.631 14.6 mv Itoh
1997 04 10.861 14.6 mv Poyner
1997 04 10.980 14.0 mv Kinnunen
1997 04 10.9930 14.4 mv Kinnunen
1997 04 11.859 15.30 CU Jensen (eclipse timing)
1997 04 11.940 14.4 mv Poyner
1997 04 11.945 15.08 CU Jensen (eclipse timing)
1997 04 12.029 15.14 CU Jensen (eclipse timing)
1997 04 12.528 14.9 mv Itoh
1997 04 12.888 15.24 CU Jensen (eclipse timing)
1997 04 12.951 14.9 mv Kinnunen
1997 04 12.975 15.13 CU Jensen (eclipse timing)
1997 04 13.566 14.81 CV Ouda
1997 04 14.505 14.52 CV Ouda
1997 04 14.813 14.7 mv Kinnunen
1997 04 14.841 14.3 mv Kinnunen
1997 04 14.862 16.31 CU Jensen (eclipse timing)
1997 04 14.949 15.86 CU Jensen (eclipse timing)
1997 04 15.8062 15.72 CU Jensen (eclipse timing)
1997 04 15.888 14.8 mv Poyner
1997 04 15.8944 16.02 CU Jensen (eclipse timing)
1997 04 15.9784 16.20 CU Jensen (eclipse timing)
1997 04 16.833 15.4 mv Kinnunen
1997 04 16.8375 16.51 CU Jensen (eclipse timing)
1997 04 16.9222 16.18 CU Jensen (eclipse timing)
1997 04 17.0083 <16.0 CU Jensen (eclipse timing)
1997 04 17.0097 <16.0 CU Jensen
1997 04 18.8986 <16.0 CU Jensen
1997 04 18.9000 <16.0 CU Jensen (eclipse timing)
1997 04 18.9013 <16.0 CU Jensen
1997 04 18.9868 <16.0 CU Jensen (eclipse timing)
1997 04 18.9881 <16.0 CU Jensen
1997 04 19.465 14.81: CV Koshiro
1997 04 19.8430 16.37 CU Jensen (eclipse timing)
1997 04 19.9284 <16.0 CU Jensen (eclipse timing)
1997 04 19.9298 <16.0 CU Jensen
1997 04 20.8201 15.30 CU Jensen
1997 04 20.904 <14.4 mv Poyner
1997 04 20.97 <14.6 mv Kinnunen
1997 04 22.479 15.42 CV Koshiro
1997 04 24.486 15.77 CV Koshiro
1997 04 24.539 15.91 CV Ouda
1997 04 25.465 16.24 CV Koshiro
1997 04 25.574 15.97 CV Ouda
1997 04 25.85 <15.6 mv Kinnunen
1997 04 26.86 <15.6 mv Kinnunen
V795 Cyg [UGSS, 13.4p - <17.9:p]
================================
The observations below conclude our monitoring action of the present
outburst, which lasted for more than 10 days.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 04 07.010 13.0: mv Schmeer
1997 04 07.082 13.4 CU Jensen
1997 04 07.142 12.7 mv Schmeer
1997 04 08.037 12.7 mv Worraker
1997 04 08.05 12.7 mv Kinnunen
1997 04 08.082 12.6 mv Poyner
1997 04 08.09 13.1 CU Vanmunster
1997 04 10.103 13.1 mv Poyner
1997 04 11.05 12.6 mv Kinnunen
1997 04 12.099 13.7 mv Jensen
1997 04 12.109 13.0 mv Poyner
1997 04 13.091 13.7 mv Jensen
1997 04 13.02 14.0 mv Kinnunen
1997 04 15.040 13.9 mv Jensen
1997 04 16.052 13.8 mv Poyner
1997 04 16.103 14.1 CU Jensen
1997 04 17.05 14.1 mv Kinnunen
1997 04 17.062 14.7 CU Jensen
1997 04 19.088 16.7 CU Jensen
1997 04 21.01 <14.6 mv Kinnunen
1997 04 24.043 <14.4 mv Poyner
SX LMi [UGSU, 16B]
==================
The SX LMi superoutburst is over now, as one can derive from the
photometric summary below.
-------------------------------------------
DATE (UT) MAGN MS OBSERVER
-------------------------------------------
1997 04 07.810 13.4 mv Jensen
1997 04 07.887 13.2 mv Broens
1997 04 08.84 13.1 mv Kinnunen
1997 04 09.879 13.4 mv Poyner
1997 04 09.885 13.5 mv Jensen
1997 04 10.862 13.2 mv Poyner
1997 04 10.98 13.3 mv Kinnunen
1997 04 11.809 13.8 mv Jensen
1997 04 11.954 13.6 mv Poyner
1997 04 12.805 14.0 mv Jensen
1997 04 12.96 13.4 mv Kinnunen
1997 04 14.806 14.2 mv Jensen
1997 04 14.83 13.8 mv Kinnunen
1997 04 15.888 13.9 mv Poyner
1997 04 16.088 14.35 CU Jensen
1997 04 16.808 14.5 CU Jensen
1997 04 16.82 14.3 mv Kinnunen
1997 04 18.817 15.3 CU Jensen
1997 04 19.817 15.9 CU Jensen
1997 04 20.813 <16.0 CU Jensen
1997 04 20.905 14.8: mv Poyner
1997 04 20.96 15.0 mv Kinnunen
1997 04 25.84 <15.6 mv Kinnunen
1997 04 26.85 <15.6 mv Kinnunen
Tonny Vanmunster
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