activity
20152026
most citedDo Kepler superflare stars really include slowly-rotating Sun-like stars ? - Results using APO 3.5m telescope spectroscopic observations and Gaia-DR2 data -

160 citations · 703 across the 26 of their papers we have counts for

collaborators
Showing 2020Show all

4 papers · 1 filter

astro-ph.SR2020★ 108 cited

Statistical Properties of Superflares on Solar-type Stars: Results Using All of the Kepler Primary Mission Data

Soshi Okamoto, Yuta Notsu, Hiroyuki Maehara +5

We report the latest statistical analyses of superflares on solar-type (G-type main-sequence; effective temperature is 5100 - 6000 K) stars using all of the primary missio…

astro-ph.SR2020★ 88 cited

Time-resolved spectroscopy and photometry of an M dwarf flare star YZ Canis Minoris with OISTER and TESS: Blue asymmetry in H line during the non-white light flare

Hiroyuki Maehara, Yuta Notsu, Kousuke Namekata +15

In this paper, we present the results from spectroscopic and photometric observations of the M-type flare star YZ CMi in the framework of the Optical and Infrared Synergetic Telesc…

astro-ph.SR2020★ 21 cited

Starspot mapping with adaptive parallel tempering I: Implementation of computational code

Kai Ikuta, Hiroyuki Maehara, Yuta Notsu +7

Starspots are thought to be regions of locally strong magnetic fields, similar to sunspots, and they can generate photometric brightness modulations. To deduce stellar and spot pro…

astro-ph.SR2020★ 33 cited

Temporal Evolution of Spatially-Resolved Individual Star Spots on a Planet-Hosting Solar-type Star: Kepler 17

Kosuke Namekata, James R. A. Davenport, Brett M. Morris +9

Star spot evolution is visible evidence of the emergence/decay of the magnetic field on stellar surface, and it is therefore important for the understanding of the underlying stell…