Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Fujii, Mitsugu"'
We present early-stage analyses of low-resolution ($R=1000$) optical spectra and near-infrared light curves of the bright Type II supernova (SN II) 2023ixf in the notable nearby face-on spiral galaxy M101, which were obtained from $t=1.7$ to $8.0$ d.
Externí odkaz:
http://arxiv.org/abs/2306.00263
Autor:
Tampo, Yusuke, Nogami, Daisaku, Kato, Taichi, Ayani, Kazuya, Naito, Hiroyuki, Narita, Norio, Fujii, Mitsugu, Hashimoto, Osamu, Honda, Kenzo Kinugasa Satoshi, Takahashi, Hidenori, Narusawa, Shin-ya, Sakamoto, Makoto, Imada, Akira
We present our spectroscopic observations of V455 Andromedae during the 2007 superoutburst. Our observations cover this superoutburst from around the optical peak of the outburst to the post-superoutburst stage. During the early superhump phase, the
Externí odkaz:
http://arxiv.org/abs/2201.09094
Autor:
Urakawa, Seitaro, Fujii, Mitsugu, Hanayama, Hidekazu, Takahashi, Jun, Terai, Tsuyoshi, Oshima, Osamu
We present visible spectroscopic observations of a near-earth object (NEO) 2012 DA14. The asteroid 2012 DA14 came close to the surface of the Earth on February 15, 2013 at a distance of 27,700 km. Its estimated diameter is around 45 m. The physical p
Externí odkaz:
http://arxiv.org/abs/1306.2111
Autor:
Tanaka, Jumpei, Nogami, Daisaku, Fujii, Mitsugu, Ayani, Kazuya, Kato, Taichi, Maehara, Hiroyuki, Kiyota, Seiichiro, Nakajima, Kazuhiro
We report on the spectral evolution of the enigmatic, very slow nova V5558 Sgr, based on the low-resolution spectra obtained at the Fujii-Bisei Observatory and the Bisei Astronomical Observatory, Japan during a period of 2007 April 6 to 2008 May 3. V
Externí odkaz:
http://arxiv.org/abs/1105.1614
We report on the spectral evolution of 6 classical novae, V1186 Sco, V2540 Oph, V4745 Sgr, V5113 Sgr, V458 Vul, and V378 Ser, based on the low-resolution spectra obtained at the Fujii-Bisei Observatory and the Bisei Astronomical Observatory, Japan. I
Externí odkaz:
http://arxiv.org/abs/1010.5611
Autor:
Yamanaka, Masayuki, Uemura, Makoto, Kawabata, Koji S., Fujii, Mitsugu, Tanabe, Kenji, Imamura, Kazuyoshi, Komatsu, Tomoyuki, Arai, Akira, Sasada, Mahito, Itoh, Ryosuke, Harao, Tatsuya, Kunitomi, Nanae, Nagae, Osamu, Nose, Mikiha, Ohsugi, Takashi, Okushima, Takako, Sakimoto, Kiyoshi, Yoshida, Michitoshi
We present early spectroscopy of the recurrent nova U~Sco during the outburst in 2010. We successfully obtained time-series spectra at $t_{\rm d}=$0.37--0.44~d, where $t_{\rm d}$ denotes the time from the discovery of the present outburst. This is th
Externí odkaz:
http://arxiv.org/abs/1008.2843
Autor:
Hiroi, Kazuo, Nogami, Daisaku, Ueda, Yoshihiro, Moritani, Yuuki, Soejima, Yuichi, Imada, Akira, Hashimoto, Osamu, Kinugasa, Kenzo, Honda, Satoshi, Narusawa, Shin-ya, Sakamoto, Makoto, Iizuka, Ryo, Matsuda, Kentaro, Naito, Hiroyuki, Iijima, Takashi, Fujii, Mitsugu
We carried out an international spectroscopic observation campaign of the dwarf nova GW Librae (GW Lib) during the 2007 superoutburst. Our observation period covered the rising phase of the superoutburst, maximum, slowly decaying phase (plateau), and
Externí odkaz:
http://arxiv.org/abs/0904.3425
Akademický článek
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Autor:
Zagury, Frederic, Fujii, Mitsugu
Publikováno v:
New Astronomy, 2003, 8, p.549-556
We analyze and fit visible spectra of a red horizon at sunrise. The shape of the spectra consist of a blue continuum followed by a red bump. The reddest spectra are well fitted by the product of a spectrum of extinguished sunlight (Rayleigh extinctio
Externí odkaz:
http://arxiv.org/abs/astro-ph/0601152
Autor:
Zagury, Frédéric ∗, Fujii, Mitsugu
Publikováno v:
In New Astronomy 2003 8(6):549-556