10 papers
Identification of a superbright nova in our Galaxy: revisiting the light curve analyses of the candidate novae CP Lac, CP Pup, V838 Her, V597 Pup, V5583 Sgr, and V5589 Sgr
Izumi Hachisu, Mariko Kato
The two very fast novae in our Galaxy, V1500 Cyg and V1674 Her, reached the absolute magnitude of . These brightest novae are identified as superbri…
A multiwavelength light curve analysis of the very fast nova V1723 Sco
Izumi Hachisu, Mariko Kato
We have analyzed multiwavelength light curves of the very fast nova V1723 Sco, based on our fully self-consistent nova explosion models. The time-stretching method gives the distan…
Upper bound of ejecta mass in a nova outburst
Izumi Hachisu, Mariko Kato
We present the maximum ejecta mass and the maximum ratio of ejecta mass and accreted mass of a nova for various white…
Formation of an optically thick shocked shell in the very fast nova V1674 Herculis: the origin of superbrightness
Izumi Hachisu, Maiko Kato
V1674 Her is the fastest ( day) classical nova in our Galaxy and its absolute peak of is one magnitude brighter than typical very fast nova…
Fully self-consistent nova explosion models reproducing light curves of KT Eri, V339 Del, V597 Pup, and SMC NOVA 2016-10a
Mariko Kato, Izumi Hachisu, Hideyuki Saio
The rising phase toward the optical maximum of a classical nova is one of the last frontiers of nova study. Constructing free-free emission model light curves based on our fully se…
Optical detection of the X-ray flash in the very fast nova V1674 Her: Optical contribution of the irradiated accretion disk
Izumi Hachisu, Mariko Kato
V1674 Her is one of the fastest and brightest novae, characterized by dense optical photometry in the pre-maximum phase, a rise from to 7 mag, in one-fourth of a day. We pre…