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VSNET campaign target list (2003 June 7)
*** VSNET campaign selected current target list 2003 June 7 ***
Object Class Position Type State Data Remark
======================================================================
GO Com 1 northern UGSU definite (rare) 1 (1)
evening to superoutburst!!
midnight
V803 Cen 2 southern HeDN superoutburst! 1 (2)
mag above 13
IM Nor 2 southern NR+E: mag about 17.0 2 (3)
V504 Cen 2 southern NL(VY) new target, mag 13 1 (4)
PU CMa 3 southern, UGSU post-superoutburst
early evening mag about 14-15 1 (5)
MV Lyr 3 northern NL(VY) extremely bright 1 (6)
QPOs present
CR Boo 3 northern HeDN outburst 1
OU Vir 3 equatorial UGSU+E near quiescence 1 (7)
======================================================================
* Class: 1 = primary target, 2 = secondary target, 3 = optional target
* Data: data request, 1 = VSNET core team, data will be received by
campaign report list. 2 = as above, in collaboration with
Hachisu-san.
(1) GO Com: rare superoutburst of the large-amplitude SU UMa-type.
(Following a precursor outburst). Magnitude about 13.
Superhump period 0.0633 d. Top-priority object, observe as long as
you can!!
[VSNET web page]
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/gocom0306.html
(2) V803 Cen: definite superoutburst! Very clear superhumps recorded by
Butterworth. Bright state will last for a short time (a few days),
then will enter somewhat fainter "plateau" phase with oscillations.
(see Kato et al. 2000 IBVS 4915 for overall picture of V803 Cen
supercycle; additional reading for CR Boo/V803 Cen: Kato et al. 2001
IBVS 5091, Kato et al, 2000 MNRAS 315, 140, all showing supercycle
or standstill behavior of these helium dwarf novae).
http://vsnet.kusastro.kyoto-u.ac.jp/pub/vsnet/DNe/V803_Cen/sh0306.gif
(3) IM Nor: probably eclipsing recurrent nova. Cover a few orbital cycles
(once or twice in a week, during these dark runs). Orbital coverage
at different outburst states is important, and we encourage further
(occasional) orbital coverage as long as the object is reachable.
Berto's image (helpful for identification) is posted at:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Novae/imnor.html
(4) V504 Cen: bright overlooked VY Scl star, now at maximum (mag about 13).
Position: 14:12:49.11, -40:21:37.1 (J2000.0). Suitably placed after
PU CMa runs.
(5) PU CMa: data from Peter Nelson. Superhumps have almost disappeared.
Lowered priority. Snapshot observation to watch for a rebrightening
will be sufficient. V803 Cen/V504 Cen/(IM Nor, faint) are better-suited
targets now.
(6) MV Lyr: short-term variations with time scales of 10-30 min are
dominant. Excellent coverage from different observers.
(7) OU Vir: fading from post-superoutburst. Snapshot observations
will be sufficient. Will be dropped from this list soon.
Objects recently dropped from the list: MM Sco (faded from normal outburst)
Please closely watch vsnet-alert and vsnet-outburst for other new
outbursts.
Web resource:
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/gocom0306.html
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/gocom.html [background info]
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/ouvir.html
http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/DNe/pucma.html
*** Notice ***
This list is "read-only", i.e. it is used only for announcement of
the target lists. Other information, as well as reports and discussions
on particular targets, should be directed to the appropriate VSNET campaign
sub-lists (e.g. vsnet-campaign-dn for dwarf novae).
Nightly time-series observations should be now directed to (rather than
private e-mails):
---------------------------------------------------
vsnet-campaign-report@ooruri.kusastro.kyoto-u.ac.jp
---------------------------------------------------
Reports sent to this address will be delivered to the VSNET campaign
local staffs, including Ishioka-san, Uemura-san and me, and are expected
to be more convenient than personal e-mails to separate addresses.
Regards,
Taichi Kato
VSNET admin
Return to the Powerful Daisaku
vsnet-adm@kusastro.kyoto-u.ac.jp
