activity
20122025
most citedKinematics of classical Cepheids in the Nuclear Stellar Disk

38 citations · 400 across the 35 of their papers we have counts for

collaborators

35 papers

astro-ph.GA2025★ 8 cited

MAGIS (Measuring Abundances of red super Giants with Infrared Spectroscopy) project I. Establishment of an abundance analysis procedure for red supergiants and its evaluation with nearby stars

Daisuke Taniguchi, Noriyuki Matsunaga, Naoto Kobayashi +11

[Abbreviated] Context. Given their high luminosities (L>~10^4Lsun), red supergiants (RSGs) are good tracers of the chemical abundances of the young stellar population in the Milky…

astro-ph.EP2024

[N I] 10400/10410 Å Lines as Possible Disk Wind Tracers in a Young Intermediate-Mass Star

Haruki Katoh, Chikako Yasui, Yuji Ikeda +10

In this study, we performed high-resolution near-infrared (NIR) spectroscopy (R = 28,000; -1.35 m) with a high signal-to-noise ratio on HD 200775, a very young (${\sim…

astro-ph.CO2024★ 1 cited

First Result for Dark Matter Search by WINERED

Wen Yin, Taiki Bessho, Yuji Ikeda +10

The identity of dark matter has been a mystery in astronomy, cosmology, and particle theory for about a century. Bessho, Ikeda, and Yin (2022), three of the current authors, propos…

astro-ph.EP2024

A High-Resolution Non-Detection of Escaping Helium In The Ultra-Hot Neptune LTT 9779b: Evidence for Weakened Evaporation

Shreyas Vissapragada, Patrick McCreery, Leonardo A. Dos Santos +16

The recent discovery of ``ultra-hot'' ( day) Neptunes has come as a surprise: some of these planets have managed to retain gaseous envelopes despite being close enough to th…

astro-ph.IM2024

WARP: The Data Reduction Pipeline for the WINERED spectrograph

Satoshi Hamano, Yuji Ikeda, Shogo Otsubo +8

We present a data reduction pipeline written in Python for data obtained with the near-infrared cross-dispersed echelle spectrograph, WINERED, which yields a 0.911.35 m spect…

astro-ph.GA2023

The globular cluster VVV CL002 falling down to the hazardous Galactic centre

D. Minniti, N. Matsunaga, J. G. Fernandez-Trincado +15

Context. The Galactic centre is hazardous for stellar clusters because of the strong tidal force. Supposedly, many clusters were destroyed and contributed stars to the crowded stel…