Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aspc..404...90a&link_type=abstract
The Eighth Pacific Rim Conference on Stellar Astrophysics: A Tribute to Kam-Ching Leung ASP Conference Series, Vol. 404, proceed
Astronomy and Astrophysics
Astrophysics
2
Scientific paper
We report our optical and near-infrared observations of 4 classical novae at the Higashi-Hiroshima Observatory, Japan. These novae show unusual features in their light curves. V2362 Cyg experienced a rebrightening about 240 days after the maximum. The behavior is similar to V1493 Aql. After the rebrightening maximum, we obtained the strong evidence of a dust formation. V1280 Sco is a dust formation nova. The dust formation was found at its early phase of the outburst. We found that the object did not show any declines in Ks-band. The result indicates that the dust component remains in outer shells of V1280 Sco. We also observed V458 Vul and V5558 Sgr which experienced rebrightenings or flares, but their durations and amplitudes were shorter and smaller than V2362 Cyg. V5558 Sgr is a very slow nova and showed many some striking rebrightenings which was similar to V723 Cas which was also very slow nova. In V458 Vul, our spectral observation indicates that the P-Cyg profiles reappeared during rebrightenings.
Arai Akira
Kanata Team
Kawabata Koji S.
Kino Motoki
Ohsugi Takashi
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