Smart Kanata: A framework for autonomous decision-making in rapid follow-up observations of cataclysmic variables

被引：0

作者：

Uemura, Makoto ^{[1
]}

Koga, Yuzuki ^{[2
]}

Sazaki, Ryosuke ^{[2
]}

Yukino, Tomoya ^{[3
,4
]}

Nakaoka, Tatsuya ^{[1
]}

Imazawa, Ryo ^{[2
]}

Kato, Taichi ^{[5
]}

Nogami, Daisaku ^{[5
]}

Isogai, Keisuke ^{[5
,6
]}

Kojiguchi, Naoto ^{[5
]}

Taguchi, Kenta ^{[5
]}

Tampo, Yusuke ^{[5
,7
,8
]}

Maehara, Hiroyuki ^{[9
]}

Ikeda, Shiro ^{[10
]}

机构：

[1] Hiroshima Univ, Hiroshima Astrophys Sci Ctr, Kagamiyama 1-3-1, Higashihiroshima, Hiroshima 7398526, Japan

[2] Hiroshima Univ, Grad Sch Adv Sci & Engn, Dept Phys, 1-3-1 Kagamiyama, Higashihiroshima, Hiroshima 7398526, Japan

[3] Univ Tokyo, Inst Astron, Grad Sch Sci, 2-21-1 Osawa, Mitaka, Tokyo 1810015, Japan

[4] Univ Tokyo, Grad Sch Sci, Dept Astron, 7-3-1 Hongo,Bunkyo Ku, Tokyo 1130033, Japan

[5] Kyoto Univ, Dept Astron, Kitashirakawa Oiwake Cho,Sakyo Ku, Kyoto, Kyoto 6068502, Japan

[6] Univ Tokyo, Grad Sch Arts & Sci, Dept Multidisciplinary Sci, 3-8-1 Komaba, Meguro, Tokyo 1538902, Japan

[7] South African Astron Observ, POB 9, ZA-7935 Cape Town, South Africa

[8] Univ Cape Town, Dept Astron, Private Bag X3, ZA-7701 Rondebosch, South Africa

[9] Natl Inst Nat Sci, Subaru Telescope Okayama Branch Off, Natl Astron Observ Japan, 3037-5 Honjo,Kamogata Cho, Asakuchi, Okayama 7190232, Japan

[10] Inst Stat Math, 10-3 Midori Cho, Tachikawa, Tokyo 1908562, Japan

来源：

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN | 2025年

基金：

日本学术振兴会;

关键词：

accretion; accretion disks; methods: observational; novae; cataclysmic variables; stars: dwarf novae; DIGITAL SKY SURVEY; EARLY SPECTROSCOPY; CLASSICAL NOVAE; MIRA VARIABLES; MASS EJECTION; CATALOG; STARS; OUTBURST; CLASSIFICATION; IDENTIFICATION;

D O I：

10.1093/pasj/psae112

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Studying the early stages of transient events provides crucial information about the fundamental physical processes in cataclysmic variables (CVs). However, determining an appropriate observation mode immediately after the discovery of a new transient presents challenges due to significant uncertainties regarding its nature. We developed a framework designed for autonomous decision-making in prompt follow-up observations of CVs using the Kanata 1.5 m telescope. The system, named Smart Kanata, first estimates the class probabilities of variable star types using a generative model. It then selects the optimal observation mode from three possible options based on the mutual information calculated from the class probabilities. We have operated the system for similar to 300 d and obtained 21 samples, among which automated observations were successfully performed for a nova and a microlensing event. In the time-series spectra of the nova V4370 Oph, we detected a rapid deepening of the absorption component of the H alpha line. These initial results demonstrate the capability of Smart Kanata in facilitating rapid observations and improving our understanding of outbursts and eruptions of CVs and other galactic transients.

引用

页码：219 / 236

页数：18

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