V844 Her
P. Schmeer reported a possible outburst (13.5mag) of the short period SU
UMa-type dwarf nova, V844 Her on March 9 (vsnet-campaign-dn
2163). No confirmation was reported, and the object was reported
to be faint on March 10. T. Kato commented that the object resembles
SW UMa in its outburst pattern (vsnet-campaign-dn
2426). The last confirmed outburst was in 2001 August. The all recorded
outbursts of V844 Her was superoutbursts.
H. McGee reported on May 18 that V844 Her experienced a bright outburst.
The detection of superhumps revealed that it was a superoutburst. Superhumps
decreased in amplitude from 0.3 to 0.1mag on May 20-24 (vsnet-campaign-dn
2448, 2462).
The object entered a rapid fading phase from superoutburst in the end of
May (vsnet-campaign-dn
2467, 2470,
2479).
Another bright outburst was detected by E. Muyllaert, P. Schmeer and H.
McGee on October 23. The interval of the outbursts has become shorter than
the previous values (vsnet-campaign-dn
2914). In the light curve taken by K. Tanabe on October 24, there was
no strong superhump signal, indicating that the outburst was a normal
outburst (vsnet-campaign-dn
2923). The object then quickly faded (vsnet-campaign-dn
2918, 2933).
It was reported to have been still active at 14.2 mag on Oct. 28 (vsnet-campaign-dn
2942).
T. Kinnunen reported an outburst (12.5mag) on December 21. The outburst
interval was again unusually short. The brightness and the long duration
of the outburst indicated that it was a superoutburst (vsnet-campaign-dn
3176, 3181,
3190).
T. Kato reported that, if the superoutburst nature of the present outburst
is confirmed, V844 Her belongs to rather unusual SU UMa-type dwarf novae
having clearly different maximum magnitudes (cf. SW UMa, BC UMa) (vsnet-campaign-dn
3178).
Other articles:
vsnet-campaign-dn
2432, 2436,
2447,
2450,
2920,
2926,
2925,
2931