CCD image by S. Kiyota
CCD image by S. Kiyota
K. Takamizawa's negative observations revealed the nova eruption started after February 19 (vsnet-campaign-nova 236). Y. Nakamura reported a prediscovery observation that the object was fainter than 11.1 on February 20.852. This indicates that the major rise of the nova took place within a narrow period between Feb. 21 and 23 (vsnet-campaign-nova 252). The A. Tago's observation on February 22.860 which is 36 hours earlier than Liller's discovery shows the object has already bright at 9.8mag (vsnet-campaign-nova 257). T. Kato mentioned that it may be a recurrent nova in the case of the 16-17th mag star is the quiescent object (vsnet-campaign-nova 238). The nova was extremely rapidly declining (vsnet-campaign-nova 259), and then, the rate became moderate in the early March (vsnet-campaign-nova 261). The fading stopped at 11.2-11.4mag in the early March (vsnet-campaign-nova 272). After this short plateau, the object again faded rapidly (vsnet-campaign-nova 276). The nova stopped its rapid decline and remained at V=14.3 in the early May (vsnet-campaign-nova 296).
Other related articles: vsnet-campaign-nova 226, 228, 229, 230, 231, 234, 235, 237, 239, 241, 243, 240, 244, 245, 246, 247, 248, 251, 254, 255, 256, 263, 264, 265, 266, 269, 278, 291,
Links:
Nova Sgr 2001 VSNET page:
http://www.kusastro.kyoto-u.ac.jp/vsnet/Novae/nsgr01.html
Chart by B. Sumner:
http://joevp.20m.com/charts/hscharts/South_up/