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Direct Imaging Explorations for Companions from the Subaru/IRD Strategic Program II; Discovery of a Brown-dwarf Companion around a Nearby Mid-M-dwarf LSPM J1446+4633

  • Authors: Taichi Uyama, Masayuki Kuzuhara, Charles Beichman, Teruyuki Hirano, Takayuki Kotani, Qier An, Timothy D. Brandt, Markus Janson, Dimitri Mawet, Mayuko Mori, Bun'ei Sato, Denitza Stoeva, Motohide Tamura, Masataka Aizawa, Bryson Cale, Thomas Henning, Hiroyuki Tako Ishikawa, Norio Narita, Masahiro Ogihara, Aniket Sanghi, Trifon Trifonov, Jerry Xuan, Eiji Akiyama, Hiroki Harakawa, Klaus Hodapp, Masato Ishizuka, Shane Jacobson, Eiichiro Kokubo, Mihoko Konishi, Tomoyuki Kudo, Takashi Kurokawa, Jungmi Kwon, Jun Nishikawa, Masashi Omiya, Takuma Serizawa, Huan-Yu Teng, Akitoshi Ueda, Sebastien Vievard

Taichi Uyama et al 2025 The Astronomical Journal 170 .

  • Provider: AAS Journals

Caption: Figure 3.

Common proper-motion test of the companion candidate around J1446. The blue and orange crosses indicate the relative location to the central star (ΔR.A. for x-axis and Δdecl. for y-axis). The gray solid line indicates a trajectory of a zero proper-motion background star and the red cross indicates an expected position of the background-star case in the second epoch. We insert the zoomed-in panel for the relative astrometry of the first and second epochs, whose error bars are small in the original panel.

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