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[vsnet-alert 373] AAVSO NEWS FLASH - No. 7
- Date: Tue, 26 Mar 1996 13:11:41 -0500 (EST)
- To: aavso-newsflash@aavso.org
- From: AAVSO <aavso@aavso.org>
- Subject: [vsnet-alert 373] AAVSO NEWS FLASH - No. 7
- Sender: owner-vsnet-alert@kusastro.kyoto-u.ac.jp
THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, MA 02138 USA
Tel. 617-354-0484 Fax 617-354-0665
INTERNET: aavso@aavso.org
* * * AAVSO NEWS FLASH * * *
Subject: ER UMa, SS Aur, YZ Cnc, SS Cyg, No. 7
V516 Cyg, AM Her, X Leo, CN Ori,
GK Per, TZ Per, UV Per, CY UMa, March 26, 1996
Z UMi
________________________________________________________________________________
ER URSAE MAJORIS
The dwarf nova type (possibly U Gem subclass) cataclysmic variable
ER UMa is having an outburst as indicated by the following observations:
UT JD Mag. Observer
MAR 17.0840 2450159.584 14.2 (J. Bortle, USA)
MAR 18.0563 2450160.5563 15.0 (Bortle)
MAR 21.2403 2450163.7403 14.0 (T. Burrows, USA)
MAR 24.2174 2450166.7174 13.1 (Burrows)
MAR 24.868 2450167.368 12.7 (L. T. Jensen, Denmark)
MAR 25.125 2450167.625 13.0 (R. Stewart, USA)
MAR 26.3250 2450168.825 12.1 (Burrows)
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SS AURIGAE
This star has slowly reached maximum (see AAVSO News Flash No. 6) as
indicated by the following observations:
UT JD Mag. Observer
MAR 22.8 2450165.3 11.0 (M. Verdenet, France)
MAR 22.8 2450165.3 11.2 (J. Gunther, France)
MAR 23.0889 2450165.5889 10.7 (D. Weier, USA)
MAR 23.1778 2450165.6778 10.9 (T. Burrows, USA)
MAR 23.8 2450166.3 10.8 (Verdenet)
MAR 24.1736 2450166.6736 10.9 (Burrows)
MAR 24.862 2450167.362 10.8 (L. T. Jensen, Denmark)
MAR 25.0306 2450167.5306 10.7 (J. McKenna, USA)
MAR 25.054 2450167.554 10.9 (R. Stewart, USA)
MAR 26.2785 2450168.7785 11.0 (Burrows)
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YZ CANCRI
The superoutburst of this dwarf nova continues (see AAVSO News Flash No. 6)
as indicated by the following observations:
UT JD Mag. Observer
MAR 22.8 2450165.3 11.8 (J. Gunther, France)
MAR 23.2007 2450165.7007 11.7 (T. Burrows, USA)
MAR 23.8 2450166.3 11.9 (M. Verdenet, France)
MAR 24.010 2450166.51 11.3 (R. Stewart, USA)
MAR 24.1965 2450166.6965 11.6 (T. Burrows, USA)
MAR 24.854 2450167.354 11.5 (L. T. Jensen, Denmark)
MAR 25.060 2450167.56 11.7 (Stewart)
MAR 25.1063 2450167.6063 11.7 (M. Dombrowski, USA)
MAR 25.1345 2450167.6345 11.5 (J. McKenna, USA)
MAR 26.2958 2450168.7958 11.8 (Burrows)
------------------------------------------------------------------------------
SS CYGNI
The dwarf nova type (U Gem subclass) cataclysmic variable SS Cyg is fading
from a short outburst as indicated by the following observations:
UT JD Mag. Observer
MAR 14.194 2450156.694 12.3 (P. Schmeer, Germany)
MAR 14.4188 2450156.9188 11.9 (M. A. Komorous, Canada)
MAR 16.3875 2450158.8875 11.4 (Komorous)
MAR 18.629 2450161.129 11.7 (W. Albrecht, USA)
MAR 19.4944 2450161.9944 9.7 (N. Simmons, USA)
MAR 19.629 2450162.129 8.7 (Albrecht)
MAR 20.1743 2450162.6743 8.9 (M. Kohl, Switzerland)
MAR 20.185 2450162.685 8.7 (Schmeer)
MAR 21.1368 2450163.6368 8.9 (S. Brincat, Malta)
MAR 22.1576 2450164.6576 9.5 (Brincat)
MAR 23.40 2450165.9 9.4 (P. Dombrowski, USA)
MAR 24.40 2450166.9 9.4 (Dombrowski)
MAR 24.4069 2450166.9069 9.3 (J. Griese, USA)
MAR 25.132 2450167.632 9.7 (L. T. Jensen, Denmark)
------------------------------------------------------------------------------
V516 CYGNI
The dwarf nova (U Gem subclass) cataclysmic variable V516 Cyg is in
outburst as reported by L. T. Jensen.
UT JD Mag. Observer
MAR 25.133 2450167.633 14.0 (L. T. Jensen, Denmark)
------------------------------------------------------------------------------
AM HERCULIS
The magnetic cataclysmic variable AM Her is showing some activity as
indicated by the following observations:
UT JD Mag. Observer
MAR 6.5625 2450149.0625 13.2 (R. Royer, USA)
MAR 14.4285 2450156.9285 13.3 (M. A. Komorous, Canada)
MAR 16.3993 2450158.8993 13.3 (Komorous)
MAR 20.1701 2450162.6701 13.0 (M. Kohl, Switzerland)
MAR 22.1396 2450164.6396 13.3: (S. Brincat, Malta)
MAR 24.4021 2450166.9021 13.3 (J. Griese, USA)
MAR 25.3153 2450167.8153 13.4 (Griese)
If AM Her continues to fade into its down state, astronomers in Germany will
try to monitor it with the ROSAT x-ray satellite. Please keep a close eye on
this star and let us know of its behavior.
------------------------------------------------------------------------------
X LEONIS
This star (see AAVSO News Flash No. 6) has started to fade as indicated by the
following observations:
UT JD Mag. Observer
MAR 22.8 2450165.3 12.1 (M. Verdenet, France)
MAR 22.8 2450165.3 12.2 (J. Gunther, France)
MAR 23.2299 2450165.7299 12.4 (T. Burrows, USA)
MAR 23.8 2450166.3 12.4 (Verdenet)
MAR 24.027 2450166.527 12.3 (R. Stewart, USA)
MAR 24.2208 2450166.7208 13.1 (Burrows)
MAR 24.3056 2450166.8056 13.0 (J. Griese, USA)
MAR 24.870 2450167.37 13.5 (L. T. Jensen, Denmark)
MAR 25.069 2450167.569 13.7: (Stewart)
MAR 26.3201 2450168.8201 <13.5 (Burrows)
------------------------------------------------------------------------------
CN ORIONIS
The dwarf nova type (Z Cam subclass) cataclysmic variable CN Ori has gone
into an outburst as indicated by the following observations:
UT JD Mag. Observer
MAR 23.0563 2450165.5563 12.5 (D. Weier, USA)
MAR 23.8 2450166.3 12.1 (M. Verdenet, France)
------------------------------------------------------------------------------
GK PERSEI
The minor outburst of this old nova continues. GK Per is slowly brightening
as indicated by the following observations:
UT JD Mag. Observer
MAR 22.0910 2450164.591 10.5 (R. Hays, USA)
MAR 22.1424 2450164.6424 10.1 (W. Dillon, USA)
MAR 22.1618 2450164.6618 10.5 (T. Burrows, USA)
MAR 23.1056 2450165.6056 10.3 (Dillon)
MAR 23.1708 2450165.6708 10.6 (Burrows)
MAR 23.8 2450166.3 10.5 (M. Verdenet, France)
MAR 23.812 2450166.312 10.4 (P. Schmeer, Germany)
MAR 24.0285 2450166.5285 10.7 (M. A. Komorous)
MAR 24.1674 2450166.6674 10.4 (Burrows)
MAR 24.815 2450167.315 10.4 (Schmeer)
MAR 25.0014 2450167.5014 10.6 (J. McKenna, USA)
MAR 25.83 2450168.33 10.2 (G. Comello, Netherlands)
The XTE satellite has now observed this star four times and will observe
it once more in the near future. Please keep a close eye on this star so
that we can provide good coverage for correlation of data with XTE
observations.
------------------------------------------------------------------------------
TZ PERSEI
The dwarf nova type (Z Cam subclass) cataclysmic variable TZ Per is in
outburst as indicated by the following observations:
UT JD Mag. Observer
MAR 17.0368 2450159.5368 13.7 (J. Bortle, USA)
MAR 18.0333 2450160.5333 13.5 (G. Chaple, USA)
MAR 19.0049 2450161.5049 12.6 (Chaple)
MAR 20.80 2450163.3 13.1 (M. Verdenet, France)
MAR 21.0819 2450163.5819 12.4 (A. Dill, USA)
MAR 24.872 2450167.372 12.8 (L. T. Jensen, Denmark)
MAR 25.0104 2450167.5104 12.9 (J. McKenna, USA)
------------------------------------------------------------------------------
UV PERSEI
The superoutburst continues (see AAVSO News Flash No. 6) as indicated by
the following observations:
UT JD Mag. Observer
MAR 23.1590 2450165.659 12.5 (T. Burrows, USA)
MAR 23.8 2450166.3 12.6 (M. Verdenet, France)
MAR 23.815 2450166.315 12.5 (P. Schmeer, Germany)
MAR 24.1583 2450166.6583 12.7 (Burrows)
MAR 24.819 2450167.319 12.6 (Schmeer)
MAR 24.859 2450167.359 12.3 (L. T. Jensen, Denmark)
MAR 25.0083 2450167.5083 12.2 (J. McKenna, USA)
MAR 25.050 2450167.55 12.4 (R. Stewart, USA)
------------------------------------------------------------------------------
CY URSAE MAJORIS
The outburst of this star (see AAVSO News Flash No. 6) continues as indicated
by the following observations:
UT JD Mag. Observer
MAR 23.2375 2450165.7375 13.2 (T. Burrows, USA)
MAR 23.877 2450166.377 12.2 (P. Schmeer, Germany)
MAR 24.097 2450166.597 13.0 (R. Stewart, USA)
MAR 24.2264 2450166.7264 13.1 (Burrows)
MAR 24.3313 2450166.8313 13.0 (J. Griese, USA)
MAR 24.856 2450167.356 12.6 (Schmeer)
MAR 24.869 2450167.369 13.0 (L. T. Jensen, Denmark)
MAR 25.089 2450167.589 13.3 (Stewart)
------------------------------------------------------------------------------
Z URSAE MINORIS
The R CrB type variable, Z UMi, continues to fade. T. Burrows reported
this star at <13.7 on March 23.3021 UT (2450165.8021 JD).
------------------------------------------------------------------------------
Please monitor these stars closely and phone-in, fax, or e-mail your
observations to the AAVSO.
Good observing!
Janet A. Mattei
________________________________________________________________________________
AAVSO NEWS FLASH is a new electronic publication of the AAVSO intended
to provide observers with timely information on unusual variable star
activity. The basis of the data in this publication will be the
observations reported to AAVSO Headquarters.
The AAVSO NEWS FLASH will not replace the AAVSO Alert Notice. It will
be more frequent and shorter.
If you would like to contribute to AAVSO NEWS FLASH, please send
observations of unusual variable star activity to:
observations@aavso.org
Please include the words NEWS FLASH in the subject line of your message.
If you are affiliated with a variable star organization besides the
AAVSO, and you wish that group to be indicated with the observations
that you provide, please give the specific name of the organization or
group and its abbreviation.
Those who wish to unsubscribe to NEWS FLASH may do so by sending a
message to:
observations@aavso.org
If you would like data from the AAVSO International Database for
research purposes, please send your request to:
Janet Mattei, AAVSO Director, at aavso@aavso.org
We look forward to including your observations in future editions
of AAVSO NEWS FLASH!
_______________________________________________________________________________
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