[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]
[vsolj-alert 815] VSNET Weekly Campaign Summary
- Date: Tue, 5 Sep 2000 17:55:52 +0900 (JST)
- To: vsolj-alert@ooruri.kusastro.kyoto-u.ac.jp
- From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
- Subject: [vsolj-alert 815] VSNET Weekly Campaign Summary
- Sender: owner-vsolj-alert@ooruri.kusastro.kyoto-u.ac.jp
From owner-vsnet-campaign@kusastro.kyoto-u.ac.jp Tue Sep 5 04:19 JST 2000
To: vsnet-campaign
cc: uemura
Date: Tue, 05 Sep 2000 04:12:28 +0900
From: Makoto Uemura <uemura@kusastro.kyoto-u.ac.jp>
X-Distribute: distribute [version 2.1 (Alpha) patchlevel=24]
Subject: [vsnet-campaign 472] VSNET Weekly Campaign Summary
Content-Type: text
Content-Length: 8126
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
KK Tel (RA = 20h28m37s.27, Dec = -52d18'25".1)
The suspected SU UMa-type object KK Tel started its (faint) outburst
detected by R. Stubbings at 14.8mag on August 30 (vsnet-campaign-dn 127).
Time-series observations are encouraged to clarify its nature.
V635 Cas (RA = 01h18m32s.05, Dec = +63d44'22".3)
As reported by G. Poyner on August 29, the Be X-ray transient
V635 Cas started its optical outburst (14.7mag)(vsnet-campaign-xray 45).
The observation on September 1 by T. Kinnunen shows it to be fainter
(15.1mag) (vsnet-campaign-xray 46).
Close monitorings are encouraged.
MV Lyr (RA = 19h07m15s.93, Dec = +44d01'10".7)
The VY Scl-type novalike variable MV Lyr has rapidly brightened,
which was detected on August 28 by G. Poyner. T. Kato commented
the present brightening may have been dwarf nova-type. Time-series
photometry is strongly encouraged to clarify the present state
(vsnet-campaign 463).
Time-series observations are encouraged.
60 Cyg (RA = 20h59m26s, Dec = +45d57m.5)
E. Pollmann reported the H_alpha line of this Be-star became
an absorption line, which imply the star became a normal B-star
(vsnet-campaign-be 45).
V767 Cyg (RA = 20h16m51s.95, Dec = +53d11'21".1)
As reported by T. Kinnunen, the poorly known dwarf nova V767 Cyg
experienced an outburst (15.2mag on August 28) (vsnet-campaign 464).
AO 0235+164 (RA = 02h38m39s.0, Dec = 16d37'05")
Upon notification from L. Takalo, Nyrola team observed this blazer
and confirmed its brightening. The magnitude on August 26 is V=17.56
and R=17.02 (vsnet-campaign-blazer 56).
AO Oct (RA = 21h04m59s.07, Dec = -75d21'22".5)
The large-amplitude dwarf nova AO Oct started its rare outburst
as reported by R. Stubbings on September 2 (14.4mag). T. Kato commented
The large amplitude (the object is reported to be mag 21 at minimum)
suggests an SU UMa-type dwarf nova, which may undergo a superoutburst
(vsnet-campaign 468).
Time-resolved photometry is very strongly encouraged.
LY Hya (RA = 13h31m54s.30, Dec = -29d41'01".0)
The SU UMa-type candidate LY Hya started its relatively rare
outburst as reported by R. Stubbings on September 2 (14.0mag).
Though it will be difficult to get time-series data, nightly snapshots to
follow the outburst are still highly encouraged.
V825 Her (RA = 17h18m37s.03, Dec = +41d15'50".5)
The NL-type cataclysmic variable V825 Her was reported bright (13.3mag
on September 2). More observations are needed to confirm the nature
of the brightening (vsnet-campaign 470).
HadV27 (RA = 04h48m24s.53, Dec = +41d49'45".1)
T. Kinnunen reported the brightening of this object. The magnitude
was 14.2mag on September 3 although the object was mostly at mv=14.7
in the 1999 season. T. Kato reported the object apparently coincides
with a 2MASS star, and the object is not particularly red compared to USNO
(vsnet-campaign 471).
(continuous targets)
V368 Peg (RA = 22h58m43s.5, Dec = +11d09'13")
N. Butterworth posted the time-series photometry on August 29 and 30 to
[vsnet-campaign-data 36 and 37], respectively. M. Moilanen and A. Oksanen
posted the time-series data on August 27/28 to [vsnet-campaign-data 38].
The superoutburst is now ongoing. More time-series observations
are strongly encouraged.
V1062 Cyg (RA = 21h08m12s.60, Dec = +36d49'16".6)
The fading from the outburst was observed in the last week
(vsnet-campaign-dn 128). It is now at quiescence.
V405 Vul (RA = 19h53m05s.0, Dec = +21d14'50")
T. Vaunmunster reported the fully grown superhumps with the amplitude
of 0.4mag observed on August 29/30 (vsnet-campaign 459).
J. Pietz reported his CCD observations before the current outburst
including an outburst in 1999 July/August (vsnet-campaign 466).
The final stage of the superoutburst should be observed closely.
V1141 Aql (RA = 19h37m10s.01, Dec = +02d35'59".2)
The outburst is still ongoing. The observation by M. Reszelski
shows the magnitude on September 2 to be 15.4: mag (vsnet-campaign-dn 132).
Rho Cas (RA = 23h54m22s.99, Dec = +57d29'58".7)
The fading is still ongoing. The observation by J. Ripero shows
the magnitude on August 31 to be 5.4mag (vsnet-campaign-rhocas 7).
V550 Cyg (RA = 20h05m05s.21, Dec = +32d21'21".0)
The fading from the superoutburst was observed during the last week.
The observation by T. Kinnunen shows the magnitude on August 28 to be
16.2mag (vsnet-campaign-dn 129).
Delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
The slowly fading continues (vsnet-campaign-be 48). B. Fraser reported
the observation on September 1 yielding V=2.12 (vsnet-campaign-be 47).
SN 2000cx (RA = 01h24m46s.15, Dec = +09o30'30".9)
The fading continues. The current magnitude is about 15.0mag
(vsnet-campaign-sn 61).
XTE J1118+480 (RA = 11h18m10s.9, Dec = +48d02'12".9)
M. Uemura reported the fading trend continues during the last week.
The magnitude is near that of quiescence (18.8mag) (vsnet-campaign-xray 44).
V446 Her (RA = 18h57m21s.51, Dec = +13d14'27".3)
A new outburst of this object was detected by L. T. Jensen.
The outburst magnitude is V~15.5. It is quite important to reveal
the whole outburst shape and the recurrence pattern in V446 Her
in order to understand the physics of the accretion disk in
post novae (vsnet-campaign 460).
CI Aql (RA = 18h52m03s.6, Dec = -01d28m38.9s)
The time-series photometry observed by S. Kiyota on August 25, 28, and 29
can be seen in [vsnet-campaign-data 39, 40, and 41], respectively.
PKS2005-489 (RA = 20h05m47s.4, -48d58'45".0)
This blazer was reported to be bright again (12.8mag on August 31)
(vsnet-campaign-blazer 55).
*** 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 !!!"
*** General information ***
1432-0033
T. Vanmunster submitted a paper on this object to IBVS.
The preprint can be seen in [vsnet-preprint 10]
(http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/Mail/vsnet-preprint/msg00010.html)
[vsnet-campaign 458]
SN 1999em
D. Bishop informed an image taken by T. Puckett can be seen at:
http://vsnet.ggw.org/asras/snimages/sn1999/n1637s20.jpg
[vsnet-campaign-sn 59]
EF Eri
The location and the sequence, see [vsnet-campaign 467]
(This summary is reproduction free.)
Regards,
Makoto Uemura
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
VSNET Home Page