V359 Cen outburst Rod Stubbings reports that the dwarf nova V359 Cen is undergoing an outburst. The object had been regarded as a possible nova until the discovery of an outburst in 1999 July by Rod Stubbings. The last outburst was detected by Rod Stubbings on 2001 April 25. YYYYMMDD(UT) mag observer 20020502.421 <146 (Rod Stubbings) 20020503.428 <144 (Rod Stubbings) 20020504.415 <150 (Rod Stubbings) 20020506.403 <148 (Rod Stubbings) 20020506.449 <140 (Peter Nelson) 20020507.390 <140 (Rod Stubbings) 20020508.378 <148 (Rod Stubbings) 20020509.515 <150 (Rod Stubbings) 20020511.558 <148 (Rod Stubbings) 20020513.396 <150 (Rod Stubbings) 20020514.419 <148 (Rod Stubbings) 20020515.625 <140 (Rod Stubbings) 20020516.387 <148 (Rod Stubbings) 20020519.685 <138 (Rod Stubbings) 20020524.387 <138 (Rod Stubbings) 20020525.399 <138 (Rod Stubbings) 20020527.410 <138 (Rod Stubbings) 20020528.362 138 (Rod Stubbings) 20020528.380 138 (Rod Stubbings) 20020528.406 138 (Rod Stubbings) Time-resolve photometry is very strongly encouraged. Spectroscopic confirmation (as a dwarf nova) is also encouraged. Attached is [vsnet-alert 4849], issued on the 2000 May outburst: See also Woudt et al. (2001) MNRAS 328, 259, who reported the possible presence of superhump-like modulations (P=0.078:d) after an outburst in 1999. > V359 Cen outburst, request for observations > > Rod Stubbings reports that the dwarf nova V359 Cen is undergoing the > third historical outburst. The last outburst was in 1999 July (Stubbings). > According to a private communication on the 1999 outburst reported the > confirmation of the outburst, and the possible existence of superhumps. > The object is better located than this time, and we would encourage > photometric follow-up by southern observers. This is a timely excelllent > southern target for VSNET campaign. Please report the progress of > observations, and nightly report to vsnet-campaign. > > V359 CEN 20000510.606 <14.8 > 20000515.499 13.8 > > On the 1999 outburst: > > [vsnet-alert 3216] Schmeer's comment: > > Hilmar Duerbeck provides in his nova catalogue the following > information: > "Discovered by A. Opolski on Franklin-Adams plates. The object is > visible on 19 plates taken between 1939 April 20 and 27; the > maximum was probably missed (Lwow Contr 4 (1935))." > B1950.0 coordinates: > R.A. 11h55m42.39s Decl. -41o29'26.0" (SRC) > 11h55m54s -41o29' (A. Opolski, Lwow Contr 4) > Range: 13.8p - 21.0j > > J2000.0 coordinates according to DWS97: > R.A. 11h58m15.29s Decl. -41o46'07.9" > > Unfortunately V359 Cen is currently not favourably placed for > observers in the northern hemisphere. > > Regards, > Patrick > > --- > [vsnet-alert 3220] > > According to Munari and Zwitter (A&AS 128, 277), the spectrum of the > quiescent counterpart, suggested by Duerbeck, was too noisy to draw a > conclusion on its nature. > > Regards, > Taichi Kato Regards, VSNET Collaboration Team