[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]
[vsnet-campaign 1228] DM Dra superhump detection at Kyoto
- Date: Thu, 15 Nov 2001 11:38:34 +0900 (JST)
- To: vsnet-alert, vsnet-campaign, vsnet-superoutburst
- From: Taichi Kato <tkato>
- Subject: [vsnet-campaign 1228] DM Dra superhump detection at Kyoto
- Sender: owner-vsnet-campaign@kusastro.kyoto-u.ac.jp
DM Dra superhump detection at Kyoto
Dear Colleagues,
We have partly finished the analysis of the Kyoto Nov. 14 run of DM Dra.
The light curve clearly shows 0.3-mag superhump feature, perfectly consistent
with Vanmunster's finding.
The Kyoto team observed this star on 2000 Oct. 27 (see vsnet-campaign-dn
243). The object was by about 0.6 mag brighter last night than on 2000
Oct. 27. Although the 2000 Oct. 27 observation covered 0.091 d, the upper
limit of superhump-type variation was 0.1 mag (vsnet-campaign-dn 243).
The conclusion is confirmed to be unchanged after another inspection of
the past data. This suggests that the amplitude of superhumps can quickly
decay in this system; early observations are very important.
The VSNET Collaboration team will continue observing this star in order
to refine the superhump period, and to follow the time-evolution of hump
features. Since the seasonal condition is not best for this object,
we encourage further observations at different longitudes.
Regards,
Taichi Kato
VSNET Collaboration team
vsnet-adm@kusastro.kyoto-u.ac.jp
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
VSNET Home Page