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WINERED High-resolution Near-infrared Line Catalog: A-type Star (2018)
Journal Article
Sameshima, H., Ikeda, Y., Matsunaga, N., Fukue, K., Kobayashi, N., Kondo, S., …Yoshikawa, T. (2018). WINERED High-resolution Near-infrared Line Catalog: A-type Star. Astrophysical Journal Supplement, 239(2), Article 19. https://doi.org/10.3847/1538-4365/aae924

We present a catalog of absorption lines in the z', Y, and J bands that we identified in 21 Lyn, a slowly rotating A0.5 V star. We detected 155 absorption features in the high-resolution (0.90–1.35 μm, R = 28,000) spectrum obtained with the WINERED s... Read More about WINERED High-resolution Near-infrared Line Catalog: A-type Star.

X-ray reverberation lags of the Fe–K line due to AGN disc winds (2018)
Journal Article
Mizumoto, M., Ebisawa, K., Tsujimoto, M., Done, C., Hagino, K., & Odaka, H. (2019). X-ray reverberation lags of the Fe–K line due to AGN disc winds. Monthly Notices of the Royal Astronomical Society, 482(4), 5316-5326. https://doi.org/10.1093/mnras/sty3056

Short X-ray reverberation lags are seen across a broad Fe–K energy band in more than 20 active galactic nuclei (AGNs). This broad iron line feature in the lag spectrum is most significant in super-Eddington sources such as Ark 564 (L/LEdd ∼ 1) and 1H... Read More about X-ray reverberation lags of the Fe–K line due to AGN disc winds.

A newly identified emission-line region around P Cygni (2018)
Journal Article
Mizumoto, M., Kobayashi, N., Hamano, S., Ikeda, Y., Kondo, S., Sameshima, H., …Maehara, H. (2018). A newly identified emission-line region around P Cygni. Monthly Notices of the Royal Astronomical Society, 481(1), 793-805. https://doi.org/10.1093/mnras/sty2239

We present a high-resolution (R ≃ 20  000) near-infrared (9100–13 500Å) long-slit spectrum of P Cygni obtained with the newly commissioned WINERED spectrograph in Japan. In the obtained spectrum, we have found that the velocity profiles of the [Fe II... Read More about A newly identified emission-line region around P Cygni.

X-ray short-time lags in the Fe-K energy band produced by scattering clouds in active galactic nuclei (2018)
Journal Article
Mizumoto, M., Done, C., Hagino, K., Ebisawa, K., Tsujimoto, M., & Odaka, H. (2018). X-ray short-time lags in the Fe-K energy band produced by scattering clouds in active galactic nuclei. Monthly Notices of the Royal Astronomical Society, 478(1), 971-982. https://doi.org/10.1093/mnras/sty1114

X-rays illuminating the accretion disc in active galactic nuclei give rise to an iron K line and its associated reflection spectrum which are lagged behind the continuum variability by the light-travel time from the source to the disc. The measured l... Read More about X-ray short-time lags in the Fe-K energy band produced by scattering clouds in active galactic nuclei.