V1280 Scorpii
V1280 Scorpii (also Nova Scorpii 2007 ) is a nova that was first observed in February 2007 in the constellation Scorpio south of M62 . The nova belonged to the 9th magnitude when it was discovered around February 4, 2007 independently of Yuji Nakamura and Yukio Sakurai from Japan . On February 17th, 2007 it reached its peak with a brightness of 3.79 m , making it one of the brightest novenas of the last decades. The rise to the maximum was unusually slow. The decline suddenly accelerated after the maximum, then slowed down again and showed variations until about three months later it had a preliminary minimum brightness of 15 m . The system 104 then brightened days after the maximum unexpectedly to 3 m , and was then dimmed again with a minimum of 16 m was achieved. It then brightened up again and currently holds around 10.5 m (as of 2008). It is estimated that the system has exceeded a total amount of dust greater than 30 times the mass of the earth . With an X-ray image it was observed that the system and its shell are the “only second carbon-rich, dust-forming nova” that can be seen at these wavelengths. This form of exact examination of the nova’s dust cover is important to understand how dust is created in the universe . In addition, it also offers the possibility of testing methods of determining distance using the expansion rate of dust bowls.
Coordinates
- Right ascension : 16 h 57 m 41 p. 26
- Declination : −32 ° 20 '35 ".6
Web links
Individual evidence
- ↑ V1280 Sco (Nova Scorpii 2007) . In: American Association of Variable Star Observers website , January 23, 2012. Retrieved November 23, 2017.
- ↑ 1651-32 V1280 SCO = NOVA SCORPII 2007 ( Memento from April 19, 2012 in the Internet Archive ).