Introduction to “stellar and interstellar physics team” FY2013 http://milkyway.sci.kagoshima-u.ac.jp/~imai/research.html Hiroshi Imai Department of Physics and Astronomy, Graduate School of Science, Kagoshima University Radio Movie SiO v=1 J=1-0 masers around TX Cam (Diamond & Kemball 2003) Biweekly, 112-frame, monitoring observations with the VLBA (Gonidakis et al. 2010) Our goals: multi-line (H2O, SiO) and Multi-transition radio movies Main research themes • Stellar and interstellar astrophysics – Mass loss from dying stars AGB stars, OH/IR stars, pre-planetary and planetary nebulae – Stellar pulsation of long period variable stars Mira and semi-regular/irregular variable stars – Astronomical masers microwave amplification by stimulated emission of radiation OH, H2O, SiO, (HCN, CH3OH, …) Star forming regions, circumstellar envelopes, Extragalactic circumnuclear disks • Life of stars in the Milky Way – Annual parallax and secular motions of maser sources – Orbit determinations of target stars for exploring stellar evolution and star formation process • Study on ongoing/future large radio interferometers – Square Kilometer Array (SKA): 2020~ – Australian SKA Pathfinder (ASKAP): 2014~ – RadioAstron (Russian space VLBI): 2013~ Research activities • Used facilities: radio interferometers – – – – – – – – – VERA: VLBI Exploration of Radio Astrometry JVN: Japanese VLBI Network ALMA: Atacama Large Millimeter-submillimeter Array VLBA: Very Long Baseline Array EVLA: Extended Very Large Array EVN: European VLBI Network LBA: Australia Long Baseline Array ATCA: Australia Telescope Compact Array RadioAstron (Space VLBI) – – – – EAVN: East Asian VLBI Network (JVN+KVN+CVN) APT: Asian-Pacific Telescopes (EAVN+LBA) SKA: Square Kilometer Array ASKAP: Australia SKA Pathfinder • Planed future facilities • Current major contributions – Interferometry data analysis pipeline scripts – Scientific observation simulations – Study on maser physics and final stellar evolution Radio telescopes International collaboration (latest) Organizations • University of Hong-Kong (China) • University of Calgary (Canada) • Max-Plank Institute for Radio Astronomy (Germany) • Australia Telescope National Facilities (Australia) • University of West Australia (Australia) • University of Tasmania (Australia) • Korea Astronomy and Space Science Institute (Korea) • Ural Federal University (Russia) • ASTRON (Netherlands) International projects • GASKAP (Galactic ASKAP Spectral Line Survey) • RadioAstron Key Science Project (Masers) • Evolved Stars sub-Working Group for KVN+VERA International studentship/fellowship Visiting foreign students / researchers in 2013 • Gabor Orosz (from Budapest University of Technology and Economics) • Chong, Sze Ning (from University of Hong-Kong) • Chibueze, James Okwe (from University of Nigeria) Application to international studentship (short/long stay for graduate student) • Joint Institute for VLBI in Europe (Netherlands) • International Centre for Radio Astronomy Research (Australia) • Other institutes or universities in collaboration (Korea, Australia, South Africa, ….) 研究課題： 学部生向き (1/2) 2013年度は1 or 2人募集 今井は西オーストラリア大学に長期滞在 (2012年5月ー2013年3月まで、 2013年度は約２カ月間） 出張中は、Skype会議、電子メール等による定期的指導 博士前期課程進学希望者のみ受け入れ（2013年度限りの条件） • VERA+KVN (Korean VLBI Network)共同観測 – 試験データ解析、科学的研究、研究計画立案補助 • VERA単独アストロメトリ – 年周視差計測： RadioAstron KSP 対象天体 • その他 (次頁、後日相談） 研究課題： 学部生向き (2/2) • LBA（Australia)関係 – 大小マゼラン雲H2Oメーザー源及び位置参照電波源に関する研究 • ALMA関係 – 観測計画書作成のための情報収集・シミュレーション 対象： 「宇宙の噴水」天体、惑星状星雲 – 初期データの解析 – ASTEを使ったCI (496GHz)輝線探査 • SKA (Square Kilometer Array)関係 – 研究課題の検討のための情報収集と各種シミュレーション – Galactic Australia SKA Pathfinder Spectral Line Survey (GASKAP)関連 • RadioAstron (Space VLBI)国際共同観測 – 高輝度水酸基、水蒸気メーザー源の物理学 • そのほか – 赤外線天文衛星「あかり」データを用いたOH/IR星に関する研究
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