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researcher

Keiichi Ohnaka

4 papers hereh-index 14 citations4 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • first author1
  • last author2

Across the 3 of 4 papers where every author was matched, so the position is known.

fields
  • astro-ph.SR3
  • astro-ph1

identity via Semantic Scholar / OpenAlex

activity
20052026
most citedFirst AMBER/VLTI observations of hot massive stars

2 citations · 2 across the 4 of their papers we have counts for

collaborators
Showing astro-ph.SRShow all

3 papers · 1 filter

astro-ph.SR2026

A phoenix rises from the ashes: WOH G64 is still a red supergiant, for now

Jacco Th. van Loon, Keiichi Ohnaka

For a long time, WOH G64 was known as the most extreme red supergiant outside our Galaxy. However, in a matter of years it has faded, its pulsations have become suppressed and the…

astro-ph.SR2025

Low- and high-velocity `water fountains': different evolutionary stages

Roldán A. Cala, Luis F. Miranda, José F. Gómez +1

`Water fountains' (WFs) are optically obscured evolved stars, most of them thought to be in the post-asymptotic giant branch (post-AGB) phase, characterized by H2​O maser emiss…

astro-ph.SR2013

VLA survey of the 22 GHz H2O masers toward 10 silicate carbon stars

K. Ohnaka, D. A. Boboltz, G. Mulitz-Schimel +2

Despite their carbon-rich photospheres, silicate carbon stars show evidence of oxygen-rich circumstellar material, which is considered to exist in disks. Silicate carbon stars repr…

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Not affiliated with arXiv. Researcher data from Semantic Scholar (ODC-BY) and OpenAlex.