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Optical and Near-Infrared Observations of Classical Nova V1723 Aql

  • M. Nagashima (a1), A. Arai (a1), M. Isogai (a1), T. Arasaki (a1), E. Kitao (a1), G. Taguchi (a1), Y. Ikeda (a1), H. Kawakita (a1), M. Yamanaka (a2), R. Itoh (a2), M. Sasada (a2), T. Okushima (a2), M. Uemura (a2), K. S. Kawabata (a2), H. L. Worters (a3) and D. P. Smits (a4)...

Abstract

Optical and near-infrared observations of novae give us useful information for understanding the diversity of nova eruptions. Classical nova V1723 Aql was discovered by F. Kabashima and K. Nishiyama on 2010 September 11. We have conducted photometric and spectroscopic observations of V1723 Aql in both optical and near-infrared (NIR) wavelength regions since its discovery. The V-band decline time by 2 mag after the maximum, t2, was ~12 d. The apparent Fe II emission lines were also seen in the optical spectra. The Rc- and Ic-band light curves exhibited rapid declines (0.16 mag d−1 in Rc) 20 days after the visual maximum, while the NIR (J, H, and Ks) showed slow decline rates (~0.07 mag d−1). This rapid reddening suggests that dust particles formed during the very early phase of the expansion in V1723 Aql.

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References

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Cohen, J. D., 1985 ApJ, 292, 90
Das, R. K., 2000 MNRAS, 391, 1874
Downes, R. A. & Duerbeck, H. W., 2000 ApJ, 120, 2007
Kawabata, K. S.et al., 2008 SPIE, 7014E, 151
Watanabe, M.et al., 2005 PASP, 117, 870
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