activity
20152022
most citedPresolar stardust in asteroid Ryugu

36 citations · 65 across the 5 of their papers we have counts for

collaborators

5 papers

astro-ph.EP2022★ 36 cited

Presolar stardust in asteroid Ryugu

Jens Barosch, Larry R. Nittler, Jianhua Wang +121

We have conducted a NanoSIMS-based search for presolar material in samples recently returned from C-type asteroid Ryugu as part of JAXA's Hayabusa2 mission. We report the detection…

astro-ph.EP2020★ 7 cited

Variable refractory lithophile element compositions of planetary building blocks: insights from components of enstatite chondrites

Takashi Yoshizaki, Richard D. Ash, Marc D. Lipella +2

Chondrites are sediments of materials left over from the earliest stage of the solar system history. Based on their undifferentiated nature and less fractionated chemical compositi…

astro-ph.EP2019★ 3 cited

Chemically defining the building blocks of the Earth

Takashi Yoshizaki, Richard D. Ash, Tetsuya Yokoyama +2

Chondrites are undifferentiated sediments of material left over from the earliest solar system and are widely considered as representatives of the unprocessed building blocks of th…

astro-ph.GA2017★ 18 cited

Chemical evolution of 244Pu in the solar vicinity and its implication for the properties of r-process production

Takuji Tsujimoto, Tetsuya Yokoyama, Kenji Bekki

Meteoritic abundances of r-process elements are analyzed to deduce the history of chemical enrichment by r-process from the beginning of disk formation to the present time in the s…

astro-ph.SR2015★ 1 cited

Doppler shift of the quiet region measured by meridional scans with the EUV Imaging Spectrometer onboard Hinode

N. Kitagawa, H. Hara, T. Yokoyama

Spatially averaged (> 50'') EUV spectral lines in the transition region of solar quiet regions are known to be redshifted. Because the mechanism underlying this phenomenon is uncle…