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[vsnet-campaign 1280] VSNET Weekly Campaign Summary
VSNET Weekly Campaign Summary
*** Last week news ***
(new targets)
Nova Oph 2002 (RA = 17h37m34s.36 Dec = -16d23'18".4)
The discovery of a nova by K. Haseda was reported on January 26.
No bright object was seen in photographs taken by the K. Haseda
until January 24 when the object appeared at 9.0mag
(vsnet-campaign-news 125, vsnet-campaign-nova 772). D. West
confirmed the object of V=9.19 and Rc=8.67 on January 26
(vsnet-campaign-nova 774, 776) and reported the H_alpha emission
line which confirms nova nature of this new object
(vsnet-campaign-nova 775, vsnet-campaign-news 126). The object has
already been bright on January 19 as shown by a T. Seki's prediscovery
observation (vsnet-campaign-nova 777, 785). Independent discovery
was reported by Y. Nakamura on January 27 (vsnet-campaign-nova 778,
781). A. Retter performed spectroscopy and reported that the
object is very likely a classical nova that belongs to the Fe II
class, caught at the early decline phase (vsnet-campaign-nova 786,
vsnet-campaign-news 127).
A number of observers confirmed this nova and reported that
the object is still bright at about 9.0 mag (vsnet-campaign-nova
780, 782, 790).
SN 2002ao (RA = 14h29m35s.74, Dec = -00d00'55".8)
The KAIT team has discovered a brightest supernova SN 2002ao.
It is now mag about 14.8, and can reach mag 13.4 if it is of
type Ia. IAUC 7809 informed that the discovery of SN 2002ao was
made on Jan. 25 when a new object was mag about 14.3. The
position is about 16" east and 10" north of the diffuse nucleus
of the tilted open-spiral galaxy UGC 9299. There are two galaxies
around UGC 9299, but they are far beyond (v_r \sim 25000 km/s).
The recession velocity of UGC 9299 is 1552 km/s (NED). If this
velocity is of the Hubble flow, the expected maximum of a typical
SN Ia is mag about 13.4 (vsnet-campaign-sn 326, 327).
SN 2002H (RA = 13h38m27s.58, Dec = -10d43'12".9)
The host galaxy of SN 2002H = MCG -02-35-11 is a lenticular
galaxy. The expected maximum for typical SN Ia is mag about
16.6 (vsnet-campaign-sn 317). The CfA team performed spectroscopy
and reported that it was a type Ia SN past maximum
(vsnet-campaign-sn 320).
SN 2002I (RA = 13h22m26s.84, Dec = -02d25'04".1)
The host galaxy of SN 2002I = IC 4229 (barred-spiral) also
produced SN II 2001ae (mag 17.3). The expected maximum for
typical SN Ia is mag about 16.6 (vsnet-campaign-sn 317).
The CfA team performed spectroscopy and reported that it was a
type Ia SN past maximum (vsnet-campaign-sn 317).
SN 2002J (RA = 10h54m38s.36, Dec = -21d03'53".6)
The KAIT team discovered a somewhat nearby SN 2002J which can
reach mag 15.3. IAUC 7800 informed that the discovery was made
on Jan. 21.4, when the new object was mag about 16.8. It was
confirmed on the next day when it became brighter by 0.2 mag.
Its position is about 24" west and 6" north of the nucleus of a
open spiral galaxy NGC 3464. The recession velocity of this
galaxy is 3729 km/s, which indicate that the maximum of the
typical SN Ia in this galaxy would be mag about 15.3
(vsnet-campaign-sn 318). IAUC 7808 informed that this SN turned
out to be of type Ic near maximum (vsnet-campaign-sn 325).
SN 2002an (RA = 08h22m47s.76, Dec = +24d17'41".7)
As IAUC 7805 reported, Y. Sano discovered a supernova SN 2002an
in the nearby galaxy on Jan. 22.52 when its unfiltered red
magnitude was 16.04. The position of this new object is about 38"
east and 7" south of the nucleus of a face-on open spiral galaxy
NGC 2575. The expected maximum for typical SN Ia in this galaxy
is mag about 15.4. Kushida notes that it become slightly brighter
on Jan. 24.729, and nothing was visible on Jan. 6. If it is of
type Ia, it would be some days before maximum light
(vsnet-campaign-sn 321). IAUC 7808 informed that SN 2002an was
not detected on Jan. 17.54. Thus, it should be very young SN, and
expected to be rising (vsnet-campaign-sn 324).
SX LMi (RA = 10h54m29s.93, Dec = +30d06'30".0)
M. Simonsen detected a bright outburst (13.2mag) of the SU UMa
star SX LMi on January 22 (vsnet-campaign-dn 2066). The light
curve obtained by the Kyoto team on January 22 shows a somewhat
rapid decline of the object and possible double-peak modulations
(vsnet-campaign-dn 2069). The object remained bright even on
(vsnet-campaign-dn 2070), and fully-grown superhumps appeared on
January 23. M. Uemura reported the period of superhumps to be
0.07088(24) d, which is significantly longer than that reported
in Nogami et al. (1997) (0.06950(2) d) (vsnet-campaign-dn 2071).
The object further brightened on January 24 (vsnet-campaign-dn 2076),
and then started a normal gradual fading. M. Uemura reported the
shortening of superhump period (vsnet-campaign-dn 2078, 2079).
The superoutburst is now ongoing (vsnet-campaign-dn 2072).
RZ Psc (RA = 01h09m40s.07, Dec = +27d57'28".0)
As reported by E. Muyllaert, RZ Psc suddenly faded to 12.3mag
on January 24 (vsnet-campaign-orion 10).
KV CMa (RA = 06h50m52s.63, Dec = -20d54'38".0)
S. Otero reported that KV CMa is probably a rather long period
eclipsing binary and reported an eclipse reaching to 7.4mag
on January 22 (vsnet-campaign-ecl 41). The eclipse probably
lasted about 1 day (vsnet-campaign-ecl 42, 43). S. Kiyota
confirmed the eclipse and proposed its period of 171 d or 171/n d
in conjunction with HIPPARCOS and S. Otero's observations
(vsnet-campaign-ecl 44, 45).
AT Cnc (RA = 08h28m36s.92, Dec = +25d20'02".6)
As shown in observations reported during the last week,
AT Cnc possibly entered a standstill at the magnitude of 13.5-13.6
(vsnet-campaign-dn 2068). The standstill continues
(vsnet-campaign-dn 2075).
DLS_trans139 (RA = 10h49m32s.82, Dec = -04d31'45".4)
Acoording to IAUC 7803, DLS_trans139 (see [vsnet-transient-alert 2])
has been bright since January 12 at R=22.0
(vsnet-campaign-unknown-transient 2).
BZ Cam (RA = 06h29m34s.49, Dec = +71d04'39".5)
M. Simonsen reported a brightening to 11.9mag of BZ Cam
on January 25 (vsnet-campaign-nl 60).
CV ROTSE3 J015118.59-022300.1
(RA = 01h51m18s.59, Dec = -02d23'00".1)
D. A. Smith et al. (astro-ph/0201397) reported a new possible
CV. The characteristics of its light curve are similar to those
in a superoutburst of SU UMa stars (vsnet-campaign 1279).
X-ray transients in M31
According to IAUC 7798, the following X-ray transients have been
discovered during XMM-Newton observations on Jan. 5:
XMMU J004414.0+412204 supersoft
XMMU J004415.9+413058 highly absorbed spectrum P=5600 s?
XMMU J004438.1+414511
(vsnet-campaign-xray 108). The third source is located close to the
known ROSAT source RX J0044.6+4145, so observers should carefully
avoid any source confusion (vsnet-campaign-xray 109). Several mag.
~21 stars also appear within the uncertainty circles in the catalogue
by Magnier et al. (vsnet-campaign-xray 110).
(continuous targets)
V381 Nor (RA = 15h50m58s.5, Dec = -56d28'35")
B. Monard reported that his observations detected no optical
counterpart of this X-ray transient in the renewed X-ray outburst
within a limiting magnitude of R=17.5 (vsnet-campaign-xray 111).
SN 2002C (RA = 12h27m52s.66, Dec = +27d00'06".1)
The UCB group and the CfA group took spectra of this SN on
Jan 17 and 19 respectingly, which reveal that it is of type II
in the early phase (IAUC 7800). The reported magnitudes is very
bright for typical SN II (vsnet-campaign-sn 319).
SN 2002D (RA = 01h32m57s.80, Dec = -16d32'07".3)
It turned out to be of type II as shown in a spectrum taken
by the CfA team. The discovery magnitude (mag about 16.8) is
somewhat brighter than the typical SN II (vsnet-campaign-sn 320).
SN 2002E (RA = 12h08m52s.90, Dec = -09d02'13".2)
The CfA team revealed that it is of an old SN II (ibid)
(vsnet-campaign-sn 319).
SN 2002F (RA = 03h52m58s.52, Dec = +35d35'00".8)
It turned out to be of type II as shown in a spectrum taken
by the CfA team (vsnet-campaign-sn 320).
GSC 4822.39 (RA = 07h04m04s.816, Dec = -03d50'50".94)
The spectral feature has not been changed during the last week
as reported by M. Fujii and M. Gavin (vsnet-campaign-nova 765,
766, vsnet-campaign-unknown 52, 53). The object is now gradually
fading (vsnet-campaign-nova 762, 767, 768, 770, 783, 789,
vsnet-campaign-unknown 51, 54, 55, 57, 58, 60).
IM Nor (RA = 15h39m26s.47, Dec = -52d19'18".2)
S. Starrfield informed that the CHANDRA satellite will observe
IM Nor in outburst during the week of 4 February 2002
(vsnet-campaign-nova 760). The object is still bright at about
V=8.6 (January 27 by W. Liller) and gradually fading
(vsnet-campaign-nova 761, 763, 771, 779, 784, 788, 791).
IP Peg (RA = 23h23m08s.7, Dec = +18d24'59".1)
The outburst finished and the object returned to quiescence
(vsnet-campaign-dn 2067).
UX Ori (RA = 05h04m30s.39, Dec = -03d47'18".3)
The object rapidly faded and reached 10.7mag on January 21
as reported by E. Muyllaert (vsnet-campaign-orion 8).
HV Vir (RA = 13h21m03s.0, Dec = +01d53'28")
On January 21, T. Krajci reported a rapid fading from the
superoutburst plateau (vsnet-campaign-hvvir 72, 73, 76).
The rapid fading stopped in the late January 21 when late
superhumps are clearly detected in the light curve taken by
the Kyoto team (vsnet-campaign-hvvir 74, 75). On January 24,
the fading rate became more gradual and the late superhumps
were still seen (vsnet-campaign-hvvir 78). A slow brightening
was seen in the light curve on January 25 (vsnet-campaign-hvvir 79).
The extensive campaign is still ongoing (vsnet-campaign-hvvir 77).
HL CMa (RA = 06h45m17s.0, Dec = -16d51'35")
While a possible fading was reported (vsnet-campaign-dn 2073),
the unusual outburst (or standstill ?) still continues
(vsnet-campaign-dn 2077).
BL Lac (RA = 22h02m42.86s, Dec = +42d16'37.6")
The object further brightened to R~12.8 - 12.7 as reported
by M. Villata (vsnet-campaign-blazar 248, 249).
omega CMa (RA = 07h14m48s.70, Dec = -26d46'22".1)
Observations by S. Otero and T. Kato indicate that the object
is now bright at about 3.6mag (vsnet-campaign-be 157).
RR Tau (RA = 05h39m30s.53, Dec = +26d22'26".3)
On January 24, the object suddenly faded to 12.2mag as
reported by E. Muyllaert and G. Comello (vsnet-campaign-orion 9).
delta Sco (RA = 16h00m19s.9, Dec = -22d37'17")
The object is still bright at about 1.7mag
(vsnet-campaign-be 158).
SN 2001ig (RA = 22h57m30s.69, Dec = -41d02'25".9)
This supernova is still bright at about 13.0mag
(vsnet-campaign-sn 322).
V803 Cen (RA = 13h23m44s.5, Dec = -41d44'30".1)
The bright state continues (vsnet-campaign-dn 2065).
CR Boo (RA = 13h48m55s.42, Dec = +07d57'30".3)
A new outburst of 13.3mag was reported by M. Simonsen
on January 25 (vsnet-campaign-dn 2074).
V1039 Cen (RA = 13h55m41s.27, De = -64d15'57".9)
Observations by B. Monard show possible oscillations between
11 and 13 mag within a few days (vsnet-campaign-nova 764).
*** Future schedule ***
34TH COSPAR - GRB AFTERGLOW PHYSICS
HOUSTON, TX, USA, 10-19 OCTOBER 2002
Main Scientific Organizer (MSO):
Elena Pian - INAF, Astronomical Observatory of Trieste, Italy -
pian@ts.astro.it
http://vsnet.ts.astro.it/topics/topix.html
[vsnet-campaign-grb 1]
MASS-LOSING PULSATING STARS AND THEIR CIRCUMSTELLAR MATTER
Sendai, Japan: May 13-16, 2002
contact to: Dr. M. Seki or wsloc@astr.tohoku.ac.jp
http://vsnet.astr.tohoku.ac.jp/ws2002/
[vsnet-campaign-mira 3]
International Conference on Classical Nova Explosions
Sitges (Barcelona), Spain: 20-24 May 2002
For more detailed information, see http://vsnet.ieec.fcr.es/novaconf
[vsnet-campaign-nova 643]
[vsnet-campaign-nova 666]
Blazar meeting at Tuorla: June 17-21, 2002
for more information, see http://vsnet.astro.utu.fi/blazar02
[vsnet-campaign-blazar 232]
International workshop
"XEUS - studying the evolution of the hot universe"
March 11-13, 2002 ; MPE Garching, Germany
for more information, see
http://wave.xray.mpe.mpg.de/conferences/xeus-workshop
[vsnet-campaign-xray 98]
[vsnet-campaign-xray 104]
Campaign on YY Eri
2002 February 9 and 10
conducted by Japan Variable Star Study Association
http://vsnet4.airnet.ne.jp/mira/nhk/index.html
[vsnet-campaign-ecl 38]
*** General information ***
Nova Oph 2002
Finding chart presented by VSNET
http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/Novae/hadv105/
[vsnet-campaign-news 125]
Discovery photograph presented by K. Haseda:
http://ftp.kusastro.kyoto-u.ac.jp/pub/vsnet/Novae/hadv105/haseda.jpg
[vsnet-campaign-nova 773]
Charts provided by A. Price:
http://vsnet.aavso.org/charts/OPH/VAR_OPH_02/
[vsnet-campaign-nova 787]
[vsnet-campaign-unknown59]
Image taken by K. Kadota:
http://vsnet.astroarts.com/ageo/nova/NovaOph2002/NovaOph2002-20020127.jpg
[vsnet-campaign-nova 792]
GSC 4822.39
New spectrum taken by M. Fujii:
http://vsnet1.harenet.ne.jp/~aikow/20020119_norm.gif
[vsnet-campaign-nova 765]
[vsnet-campaign-unknown 52]
New charts provided by A. Price:
http://vsnet.aavso.org/charts/catalog//MON/VAR_MON_02/
[vsnet-campaign-nova 769]
[vsnet-campaign-unknown 56]
CfA team spectrum of recent SNe:
http://cfa-www.harvard.edu/cfa/oir/Research/supernova/RecentSN.html.
[vsnet-campaign-sn 320]
SN 2002an
Sequence provided by D. West, see [vsnet-campaign-sn 323]
(This summary can be cited.)
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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