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Dear colleagues, I am Seiichi Yoshida, working on the MISAO Project. A possible eclipsing variable near by GRB 030329 was reported in GCN 2056. http://gcn.gsfc.nasa.gov/gcn3/2056.gcn3 We confirmed its eclipsing variation from unfiltered CCD images taken on Mar. 29 by Ken-ichi Kadota. It is recorded in the Henden's photometry: http://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb030329.dat as 13.324 mag(V), B-V=0.226, U-B=-0.062, V-R=0.137, R-I=0.161. The 2MASS data says 12.694 mag(J), 12.559 mag(H), 12.516 mag(Ks). John Greaves commented that it will be a short period EW star. The 2MASS colours suggest that the object is late F spectral type, whilst Henden's colours suggest late A or even earlier, maybe due to the variation. Our light curve: http://vsnet.aerith.net/misao/report/variable/GCN2056_var.gif also suggests it as an EW type eclipsing variable. Here is the list of our observations: 2452728.07003 13.14 2452728.07087 13.15 2452728.07171 13.15 2452728.07256 13.17 2452728.07339 13.17 2452728.07424 13.15 2452728.07509 13.15 2452728.07593 13.15 2452728.07978 13.15 2452728.08064 13.14 2452728.08147 13.18 2452728.08231 13.24 2452728.08315 13.20 2452728.08399 13.23 2452728.08484 13.20 2452728.08567 13.21 2452728.08705 13.16 2452728.08789 13.22 2452728.08873 13.21 2452728.08957 13.20 2452728.09042 13.24 2452728.09126 13.25 2452728.09211 13.24 2452728.09294 13.25 2452728.09436 13.26 2452728.09520 13.25 2452728.09604 13.26 2452728.09689 13.26 2452728.09772 13.26 2452728.09858 13.24 2452728.09941 13.28 2452728.10025 13.27 2452728.10226 13.31 2452728.10310 13.32 2452728.10394 13.31 2452728.10478 13.30 2452728.10562 13.32 2452728.10646 13.32 2452728.10731 13.31 2452728.10815 13.34 2452728.13568 13.56 2452728.13653 13.56 2452728.13736 13.59 2452728.13821 13.57 2452728.13906 13.56 2452728.13990 13.59 2452728.14075 13.67 2452728.14159 13.61 2452728.16338 13.66 2452728.16422 13.68 2452728.16506 13.54 2452728.16590 13.56 2452728.16676 13.68 2452728.16758 13.67 2452728.16843 13.64 2452728.16933 13.58 Best regards, -- Seiichi Yoshida comet@aerith.net http://vsnet.aerith.net/
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
