82 citations · 96 across the 3 of their papers we have counts for
3 papers
UBVRI photometry of Betelgeuse over 23 years since 1999
Yojiro Ogane, Osamu Ohshima, Daisuke Taniguchi +1
We report the results of our continuous UBVRI-band photometry of Betelgeuse from 1999 to 2022 using the same photometric system. There are two advantages in our observation: (1) we…
Solar rotation inferred from radial velocities of the sun-as-a-star during the 2012 May 21 eclipse
Yoichi Takeda, Osamu Ohshima, Eiji Kambe +6
With an aim to examine how much information of solar rotation can be obtained purely spectroscopically by observing the sun-as-a-star during the 2012 May 21 eclipse at Okayama Astr…
A Possible Spin-Orbit Misalignment in the Transiting Eccentric Planet HD 17156b
Norio Narita, Bun'ei Sato, Osamu Ohshima +1
We present simultaneous photometric and spectroscopic observations of HD 17156b spanning a transit on UT 2007 November 12. This system is of special interest because of its 21-day…