CCD images by Antonio Giambersio
CCD images by Antonio Giambersio
There was a temporary minimum of ~7.5mag around September 9, and then, the object gradually recovered to 6.8-7.0mag before it again started fading (vsnet-campaign-nova 546). The slow fading was terminated by a rebrightening to 6.9mag on September 11 (vsnet-campaign-nova 554). T. Kato noted that there seems to be ~2 days periodicity of oscillations in reported magnitude to VSNET (vsnet-campaign-nova 555). The oscillations were weakened in the early September (vsnet-campaign-nova 566). The slow fading was interrupted on September 16 when a sudden fading to 8th mag was reported (vsnet-campaign-nova 569). The fading then continued (vsnet-campaign-nova 576), and then, after the object faded to 8.7-8.9mag, it again slightly brightened to 8.4-8.5mag on September 23 (vsnet-campaign-nova 577). The smooth fading was reported after October (vsnet-campaign-nova 645).
Other related articles: vsnet-campaign-nova 516, 518, 519, 520, 522, 523, 526, 527, 528, 530, 531, 532, 534, 537, 538, 539, 540, 541, 545, 548, 551, 553, 559, 560, 565, 567, 568, 571, 573, 574, 575, 581, 585, 587, 588, 590, 593, 608, 610, 612, 616, 617, 618, 620, 621, 624, 629, 632, 633, 642
Links:
Spectrum by M. Fujii:
http://www1.harenet.ne.jp/~aikow/V4740_Sgr.gif
High resolution spectrum of nova Sgr 2001 #3 by C. Buil:
http://www.astrosurf.com/buil/us/nsgr/nsgr.htm
