*** News from VSNET *** DE Cir (= Nova Cir 2003) is rapidly fading. For more detail information about these objects, see below, "VSNET Weekly Campaign Summary" of the last week. --------------------------------------------------------------------------- VSNET (Variable Star Network) is an international variable star observing network, covering various areas of novae, supernovae, cataclysmic variables (CVs), X-ray transients, and other classical eruptive, pulsating, and eclipsing variables. VSNET is one of invited contributing organizations to the SkyPub AstroAlert system. The "News from VSNET", mainly focusing on recent remarkable activities of CVs and related systems, is issued on a weekly basis, except on occasions of extremely urgent or transient events. Please refer to the VSNET Home Page for more details of events and objects listed. VSNET Home Page: http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/ VSNET provides a number of mailing lists, on which various news and topics are discussed. Subscriptions to the VSNET mailing lists are free of charge; please refer to the instruction on the above page if a reader needs more information of the list structure. CCD observations of such targets are a relatively easy task for a 20-40cm telescope; simply take as many CCD frames (with exposure times 10-30 sec) as possible, spanning several hours per night. The only requirements are the weather and your patience! If you need more help on the observing technique, please feel free to ask on the vsnet-campaign list. We would sincerely appreciate volunteers who would join the VSNET Collaboration team to study the wonders of these exotic variable stars. To join the VSNET campaign collaborative list, send an e-mail to vsnet-adm@kusastro.kyoto-u.ac.jp (VSNET administrator) with a line "SUBSCRIBE vsnet-campaign." (VSNET campaign members are strongly recommended to subscribe to vsnet-alert at the same time). Regards, Taichi Kato On behalf of the VSNET administrator team ---------------------------------------------------------------------------- The following was issued on October 27, 2003, as VSNET campaign circulation 1419 [Note a large part of detailed information is posted to vsnet-campaign sub-lists]. VSNET Weekly Campaign Summary *** Last week news *** (new targets) SN 2003ix (RA = 07h14m25s.72, Dec = +55d08'53".4) SN 2003ix is hosted by UGC 3746, a spiral galaxy within a group (or cluster) of galaxies. The expected maximum for typical SN Ia is mag about 16.9 (vsnet-campaign-sn 714). The UCB team revealed that it was a type Ia SN, a few weeks after maximum (Oct. 23 spectrum) (vsnet-campaign-sn 716). SS Cyg (RA = 21h42m42s.8, Dec = +43d35'10") SS Cyg experienced an anomalous outburst (slowly rising outburst) (vsnet-campaign-dn 4018). Var75 Cep (RA = 20h46m38s.66, Dec = +60d38'03".6) Var76 Cyg (RA = 22h02m41s.84, Dec = +46d39'06".9) According to IBVS 5461, Antipin and Kroll report on the discovery of two new dwarf novae shown above (vsnet-campaign-dn 4019). V364 Peg (RA = 21h12m29s.5, Dec = +12d32'07") P. Schmeer reported a possible outburst of V364 Peg (vsnet-campaign-dn 4020). SN 2003iy (RA = 16h21m43s.22, Dec = +55d05'05".2) SN 2003iy is hosted by NGC 6143, a spiral galaxy. The expected maximum for typical SN Ia is mag about 15.9, based on the NED recession velocity (5310 km/s). Note that RC3 has very smaller (1595 km/s) value (vsnet-campaign-sn 715). The UCB team revealed that it is a young type-II SN (Oct. 23 spectrum) (vsnet-campaign-sn 716). SN 2003iz (RA = 01h02m06s.75, Dec = +26d56'21".3) SN 2003iz is hosted by UGC 638, a giant-elliptical galaxy which is the center of the cluster CID 04. From the morphology of the host galaxy, it would be a type Ia SN, whose expected maximum is consistent with the discovery magnitudes (18.3-17.7mag) (vsnet-campaign-sn 715). The UCB team (Oct. 23 spectrum) and the CfA team (Oct. 23.28 spectrum) showed that it was indeed a SN Ia, several days after maximum light (vsnet-campaign-sn 716). SN 2003ja (RA = 02h12m11s.81, Dec = +44d34'20".8) SN 2003ja is hosted by NGC 846, a barred-spiral galaxy. The UCB team has reported that it is probably a young SN II (Oct. 23 spectrum) (vsnet-campaign-sn 716). V844 Her (RA = 16h25m01s.69, Dec = +39d09'25".9) A possible superoutburst was reported on October 23. The last superoutburst was in 2002 December (vsnet-campaign-dn 4021). The outburst still continues, which indicates a genuine superoutburst (vsnet-campaign-dn 4023). SN 2003jb (RA = 14h49m22s.28, Dec = +63d16'06".2) SN 2003jb is hosted by IC 1065, a lenticular galaxy. The discovery (and confirmation) magnitude (16.5-15.9mag) is quite brighter than that expected for the typical SN Ia with the NED recession velocity (12483 km/s). The spectroscopy and the follow-up photometry are urged (vsnet-campaign-sn 717). SN 2002jc (RA = 23h04m53s.34, Dec = -06d32'12".2) SN 2003jc is hosted by MCG -01-58-18, a spiral galaxy. The SN is almost superimposed on the bright H II region with several knots. The CfA team spectroscopy (Oct. 26.22 UT) suggest that it seems to be an early SN II (vsnet-campaign-sn 717). SN 2002jd (RA = 23h21m03s.38, Dec = -04d53'45".5) SN 2003jd is hosted by MCG -01-59-21, a disturbed-spiral galaxy. The discovery magnitude (16.1-16.0mag) is consistent with the expected maximum for typical SN Ia (vsnet-campaign-sn 717). SN 2002je (RA = 08h49m22s.24, Dec = +36d42'56".6 ) SN 2003je is hosted by NGC 2668, a spiral galaxy. The expected maximum for typical SN Ia is mag about 16.7 (vsnet-campaign-sn 717). (continuous targets) SN 2003id (RA = 02h21m35s.70, Dec = -05d31'51".0) The Carnegue Observatories team continue to monitor SN 2003id. It has strong unidentified absorption lines, and the expansion velocity seems to be quite large for the one-month old SN. The light curve is also peculiar (vsnet-campaign-sn 713). SN 2003ir (RA = 07h11m08s.18, Dec = +25d54'55".0) The CfA team revealed that it is a normal type II SN (vsnet-campaign-sn 712). SN 2003hr (RA = 08h24m39s.06, Dec = +73d24'23".3) The UCB team showed that it was a type II SN, several months after maximum (Oct. 23 spectrum) (vsnet-campaign-sn 716). MX0656-072 (RA = 06h58m26s.9, Dec = -07d15'47") According to ATEL #199, XTE J0658-073 (=MX 0656-072) is a pulsar (vsnet-campaign-xray 274). ATEL #202 (Pakull et al.) reports the possible optical counterpart of MX0656-072. The object is reported to have an O9.7Ve spectrum (vsnet-campaign-xray 275). SN 2003iu (RA = 01h55m24s.55, Dec = +21d17'06".4) The CfA team reported that it was a type Ia SN near maximum on Oct. 20.38 UT. The shallowness of Si II 635nm line may indicate that it would be a luminous SN Ia (vsnet-campaign-sn 712). SN 2003iw (RA = 21h39m43s.03, Dec = +06d17'03".0) According to the CfA team, it has a blue and almost featureless continuum with a week feature around 650 nm (Oct. 20.14 UT). It is possibly a type II SN caught at the very early phase (vsnet-campaign-sn 712). MisV1147 (RA = 22h54m03s.78, Dec = +58d54'02".1) G. Poyner reported a deep fading to 14.8mag of MisV1147 on October 23 (vsnet-campaign-orion 65). The fading was also detected by the Kyoto team (vsnet-campaign-orion 66). DE Cir (RA = 15h17m52s.48, Dec = -61d57'16".4) The rapid fading continues. It may be a very fast nova (vsnet-campaign-nova 1547). D. West reviewed the AAVSO and VSNET observations, and reported that t0(date of outburst) = 05 Oct to 08 Oct 2003, tmax(date of maximum V magnitude) = 09 Oct 2003, V~8.0, t2(date of two magnitude drop below max V~10) = 11 Oct 2003, and t3(date of three magnitude drop below max V~11) = 13 Oct 2003 (vsnet-campaign-nova 1548). V475 Sct (RA = 18h49m37s.60, Dec = -09d33'50".85) D. West reported that the nova has not entered the nebular phase (vsnet-campaign-nova 1543). He also reviewed the AAVSO and VSNET observations and reported t0 = 25 Aug 2003 (date of outburst), tmax = 1 Sep 2003 (date of maximum V magnitude, V=8.0), and t2 = 23 Sep 2003 (date of 2 magnitude drop from date of maximum) (vsnet-campaign-nova 1545). It started fading again (vsnet-campaign-nova 1546). *** Future schedule *** Call for Proposals for Cycle 1 of the Swift Guest Investigator Program Notices of Intent due: October 6, 2003 Proposal due date: December 1, 2003 [vsnet-campaign-grb 39] Stellar-Mass, Intermediate-Mass, and Supermassive Black Holes Kyoto International Community House, Kyoto, Japan October 28 - 31, 2003 http://vsnet.astro.isas.ac.jp/conference/bh2003/ [vsnet-campaign-agn 6] [vsnet-campaign-xray 260] ASTRONOMICAL POLARIMETRY CURRENT STATUS AND FUTURE DIRECTIONS 15-19 March 2004, Waikoloa Beach Marriott, Waikoloa, Hawaii http://vsnet.jach.hawaii.edu/JACpublic/JAC/pol2004 [vsnet-campaign-polar 35] IAU Symposium No. 222 - BHSIGN Conference The Interplay among Black Holes, Stars and ISM in Galactic Nuclei March 1-5, 2004, Gramado, Brasil http://bhsign.if.ufrgs.br/ [vsnet-campaign-agn 5] WEBT campaign on AO 0235+16 Campaign with VLBA conducted by Claudia M. Raiteri from September 2003 see [vsnet-campaign-blazar 305] X-RAY AND RADIO CONNECTIONS Santa Fe, New Mexico, USA 3 - 6 February 2004 http://vsnet.aoc.nrao.edu/events/xraydio/ [vsnet-campaign-xray 258] X-Ray Timing 2003: Rossi and Beyond November 3-5, 2003 Harvard-Smithsonian Center for Astrophysics http://hea-www.harvard.edu/xrt2003/ [vsnet-campaign-xray 242] AR UMa and AM Her campaign with the HST TOO program conducted by S. Saar and F. Ringwald see [vsnet-campaign-polar 24] QS Tel: Call for observations TOO program with the Chandra conducted by C. Mauche until the end of 2004 see [vsnet-campaign-polar 28] WEBT Campaign for AO 0235+16 with XMM-Newton January-February 2004 please contact to Claudia M. Raiteri, see [vsnet-campaign-blazar 301] Multiwavelength AGN Surveys a "Guillermo Haro" Astrophysics Conference organized by INAOE December 8-12, 2003 Cozumel, Mexico http://vsnet.inaoep.mx/~agn2003/ [vsnet-campaign-agn 4] Conference: THE INTERPLAY AMONG BLACK HOLES, STARS AND ISM IN GALACTIC NUCLEI in Gramado, south of Brasil, March 1-5, 2004 for more information, please contact to BHSIGN@if.ufrgs.br [vsnet-campaign-agn 3] eta Car: The next "shell event"/X-ray eclipse M. Corcoran reported the event will occur this summer. Coordinated ground-based observations of eta car along with the X-ray observations would be really important. For more information: Latest X-ray light curve: http://lheawww.gsfc.nasa.gov/users/corcoran/eta_car/etacar_rxte_lightcurve/ [vsnet-campaign-sdor 23, 24, 25, 26, 28, 29, 46] [vsnet-campaign-xray 172] Light curve provided by S. Otero: http://ar.geocities.com/varsao/Curva_Eta_Carinae.htm [vsnet-campaign-sdor 22, 32, 33] *** General information *** CI Cam Preprint by M. Ishida et al. (astro-ph/0310616) [vsnet-campaign-nova 1544] [vsnet-campaign-xray 273] (This summary can be cited.) Regards, Makoto Uemura
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