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[vsnet-campaign 504] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
PQ Aql (RA = 19h53m05s.18, Dec = +12d59'02".1)
As reported by T. Kinnunen, the long-period SU UMa-type candidate
PQ Aql started its outburst (15.4mag) on September 11 (vsnet-campaign 486).
From the historical outbursts, P. Schmeer reports the mean cycle length
may be about 1 month and the supercycle about 5 months (vsnet-campaign 488).
The likely superoutburst of PQ Aql seems to continue. The magnitude on
September 14 is about 15.5 (vsnet-campaign-dn 143).
Time-resolved photometry to observe superhumps is encouraged.
HT Cam (RA = 07h57m01s.3, Dec = +63d06'01")
T. Kinnunen reports that the UGSU:/NLDQ: type object HT Cam
(= RX J0757.0+6306) was undergoing an outburst (13.7mag) on September 14
(vsnet-campaign 492). The known outbursts of this object were extremely
short (usually less than a day). It then again showed a rapid fading
from the outburst on September 15 (<14.8mag by T. Kinnunen).
It is now at quiescence.
IX Dra (RA = 18h12m32s.2, Dec = +67d04'41")
As reported by T. Kinnunen, the outburst of the poorly studied dwarf
nova IX Dra occurred on September 14 (15.0mag; vsnet-campaign 494).
The fading trend is observed. Deep imaging is encouraged.
V811 Cyg (RA = 19h48m22s.81, Dec = +36d26'20".9)
The long, bright outburst of V811 Cyg was observed. The outburst has
lasted since September 9 at 13.3-13.8 mag. Although the object is usually
considered as an SS Cyg-type object, the present rare outburst is longer
than normal ones of this type (vsnet-campaign 497). The rapid fading
from the long outburst was observed on September 17 (15.1, 14.7 mag;
vsnet-campaign-dn 147).
V344 Lyr (RA = 18h44m31s.80, Dec = +43d22'10".2)
The separate, short outbursts are reported during September.
The peak magnitudes are 15.2-15.3mag on September 7, 12, and 15.
It is very unusual for this object (vsnet-campaign 498).
Confirmations and close monitorings are urged.
VW CrB (RA = 16h00m03s.76, Dec = +33d11'14".4)
VW CrB is definitely undergoing a superoutburst. This is the first
reported superoutburst since the 1998 September-October one
(vsnet-campaign 499).
Time-series observations are strongly encouraged.
NSV08383 (RA = 17h16m53s, Dec = -65d32'42")
As reported by B. Monard, the dwarf nova NSV 08383 is in outburst
on September 17 (at 14.1mag). The present brightness rivals that of the
1999 February - March outburst, which lasted as least five days
(vsnet-campaign 502).
All sorts of observations (including time-resolved photometry) are
urgently requested, as indicated below.
(continuous targets)
SN 2000dj (RA = 01h56m40s.63, Dec = +34d10'12".4)
H. Yamaoka calculated the position of SN 2000dj to be R.A. = 1h56m40s.56,
Decl. = +34o10'12".4 which is almost consistent with KAIT position within
the error. B. Skiff performed astrometry on SN 1972L, which has been
suggested to locate near SN 2000dj, which yields 1h56m40s.6 +34d10m14s
(3"-5" error)(vsnet-campaign-sn 74). H. Yamaoka forwarded the IAUC 7491
which revealed SN 2000dj to be a real type II SN (vsnet-campaign-sn 79).
The current magnitude is about 17mag. Close monitorings are encouraged.
BL Lac (RA = 22h02m42.86s, Dec = +42d16'37.6")
The blazar BL Lac has brightened as indicated by the observations in the
last week (vsnet-campaign-blazer 60). The current magnitude is about
14.5mag. The bright state is now ongoing.
V803 Cen (RA = 22h02m42.86s, Dec = +42d16'37.6")
As reported by R. Stubbings, it again showed an outburst (13.0mag)
on September 15 (vsnet-campaign-dn 144). It was still bright on
September 17 (vsnet-campaign-dn 146).
PKS2005-489 (RA = 20h05m47s.4, -48d58'45".0)
As reported by Berto Monard, the blazar PKS 2005-489 brighted again.
The magnitude on September 17 was 12.2 (vsnet-campaign-blazer 65).
CI Aql (RA = 18h52m03.6s, Dec = -01d28m38.9s)
The last week observations seems to show the second plateau stage
continuing around the magnitude of 13.4-13.8 (vsnet-campaign-nova 83).
V635 Cas (RA = 01h18m32s.05, Dec = +63d44'22".3)
The fading from the current outburst was observed in the last week
(vsnet-campaign-xray 53).
MV Lyr (RA = 19h07m15s.93, Dec = +44d01'10".7)
MV Lyr has apparently recovered from the slight fading trend in the
last week (vsnet-campaign 490), and then, showed a slightly fading on
September 16 and 17 (vsnet-campaign 503).
Rho Cas (RA = 23h54m22s.99, Dec = +57d29'58".7)
The faint state continues. In the last week, the reported observations
show the magnitude of 5.2-5.5mag (vsnet-campaign-rhocas 9).
Delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
In the last week, the magnitude remained almost constant (about 2.1mag)
(vsnet-campaign-be 55).
SN 2000cx (RA = 01h24m46s.15, Dec = +09o30'30".9)
The fading continues. The current magnitude is about 16mag
(vsnet-campaign-sn 84).
NSV14652 (RA = 23h36m19s, Dec = +28d03'.3)
T. Kinnunen reported that the ROSAT-NSV-selected dwarf nova candidate
NSV 14652 may be again in outburst (vsnet-campaign 487). T. Vanmunster
reported an unfiltered CCD image on September 13 did not reveal any
outbursting object (limiting mag = 16.5 - 17) and commented that it
seems unlikely that NSV 14652 really is undergoing an outburst
(vsnet-campaign 491).
(outburst prediction)
UV Per (RA = 02h10m13s.58, Dec = +57d11'26".8)
As predicted by Tsutomu Watanabe-san, the next outburst of the
SU UMa-type dwarf nova UV Per is expected within two weeks. Since the
outburst of UV Per are relatively rare (the last superoutburst occurred
in 1998 July), detailed observations are encouraged (vsnet-campaign 500).
*** Future schedule ***
EF Eri (HST observation)
Researchers at Goettingen have a plan to observe this AM Her star
with HST in near future, and strongly want to know the current state
of this star. D. Nogami provides the location (RA: 03h 14m 13.21s,
Dec: -22o 35' 42.7'' (J2000)) and the sequence
(http://ftp.nofs.navy.mil/pub/outgoing/aah/sequence/sumner/eferi.seq)
in [vsnet-campaign 467].
For more detailed information, please contact with D. Nogami
(daisaku@uni-sw.gwdg.de).
V446 Her campaign (throughout this summer)
Boris T. Gaensicke organize a campaign on the post nova V446 Her (V~18).
Their aim is to obtain a *good* contiguous light curve of V446 Her that
covers 2-3 dwarf nova-like outbursts of the system, in order to compare
its outburst characteristics to those of ``normal'' dwarf novae.
They invite those of you equipped with a CCD camera to obtain a couple
of images of V446 Her per night throughout the next three months, say,
until the end of September.
For more information, please see [vsnet-campaign 325] or contact
with Boris T. Gaensicke (boris@uni-sw.gwdg.de).
In [vsnet-campaign 446].....
"Now, one and a half month later, we present a preliminary lightcurve
which you can find at
"http://alpha.uni-sw.gwdg.de/~mschrei/v446her/light.gif".
The light curve is very interesting, ......
Hence we again invite those of you equipped with a CCD camera to
obtain a couple of images of V446Her per night at least until the
end of September. Together we can rewrite the post nova scenario !!!"
(This summary is reproduction free.)
Regards,
Makoto Uemura
vsnet-adm@kusastro.kyoto-u.ac.jp
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
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