Spectroscopic Follow-up Observation of the 2021 outburst of the recurrent nova RS Ophiuchi
ATel #14838; Kenta Taguchi, Toshiya Ueta, Keisuke Isogai (Kyoto University)
on 9 Aug 2021; 15:05 UT
Credential Certification: Keisuke Isogai (isogai@kusastro.kyoto-u.ac.jp)
Subjects: Optical, Cataclysmic Variable, Nova, Transient
Referred to by ATel #: 14844, 14846, 14849, 14850, 14851, 14855, 14857, 14858, 14860, 14864, 14882, 14885, 14886, 14894, 14909
We report our low-resolution spectra of RS Ophiuchi taken from 2021-08-09.443 UT to 2021-08-09.446 UT using the fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. 2019) mounted on the 3.8-m Seimei telescope (Kurita et al. 2020) at Okayama Observatory of Kyoto University.
As had been predicted in #13810, the first outburst since 2006 of the recurrent nova RS Ophiuchi has just occurred.
It was discovered and reported to vsnet-alert by Keith Geary ([vsnet-alert 26131]).
Also, the Large Area Telescope (LAT) on the Fermi Gamma-ray space telescope discovered it independently (#14834).
Our spectrum has Fe II, O I, and prominent Balmer lines. All of them listed here have a P Cygni profile. The velocity of the Hβ emission line is ∼ 2600 km/s. The profile and velocity indicate that this outburst is indeed a nova eruption, as is expected.
Our Spectrum
