V1280 Scorpii [SEP] constellation
V1280 Scorpii
V1280 Scorpii (or Nova Scorpii 2007) is a nova observed in February 2007 in the constellation Scorpius, just south of M62. The nova was a 9th magnitude object when it was discovered independently by Yuji Nakamura and Yukio Sakurai from Japan, around February 4, and peaked at magnitude 3.9 on February 17.
Announced by the IAU in Electronic Telegram No. 835 and Circular No. 8803
23 days after discovery, dust formation was found to be occurring in the ejecta, consistent with the classification of
of Deneb, and reached magnitude 2.0 (nearly as bright as Deneb). The most recent were V1280 Scorpii, which reached magnitude 3.7 on 17 February 2007, and Nova Delphini 2013. Nova Centauri 2013 was discovered 2 December 2013 and so far, is the brightest nova of this millennium, reaching magnitude 3.3.
Stellar evolution of novae Helium novae.
A helium nova (undergoing a helium flash) is a proposed category of nova events that lacks hydrogen lines in its spectrum. This may be