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Ikshu Gautam
Observed names:
GAUTAM, Ikshu,
Gautam, Ikshu,
I. Gautam
Institution:
Institute of Science Tokyo
Observed institutions:
Maharaja Sayajirao University of Baroda,
Tokyo Institute of Technology,
Physical Research Laboratory,
Natural History Museum,
Tohoku University,
ETH Zurich,
Institute of Science Tokyo,
Institute of Geochemistry and Petrology
show all 8
ORCID:
0000-0002-0415-9428
Observed ORCID:
0000-0002-0415-9428
OpenAlex ID:
A5010193634
Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites
2022
·
Tetsuya Yokoyama
, Kazuhide Nagashima
, et al.
·
Science
·
387
Ryugu’s nucleosynthetic heritage from the outskirts of the Solar System
2022
·
Timo Hopp
, Nicolas Dauphas
, et al.
·
Science Advances
·
110
PDF
Oxygen isotopes of anhydrous primary minerals show kinship between asteroid Ryugu and comet 81P/Wild2
2022
·
Noriyuki Kawasaki
, Kazuhide Nagashima
, et al.
·
Science Advances
·
71
PDF
Contribution of Ryugu-like material to Earth’s volatile inventory by Cu and Zn isotopic analysis
2022
·
Marine Paquet
, Frederic Moynier
, et al.
·
Nature Astronomy
·
60
Water circulation in Ryugu asteroid affected the distribution of nucleosynthetic isotope anomalies in returned sample
2023
·
Tetsuya Yokoyama
, Meenakshi Wadhwa
, et al.
·
Science Advances
·
44
PDF
Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu
2023
·
Wataru Fujiya
, Noriyuki Kawasaki
, et al.
·
Nature Geoscience
·
44
PDF
Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu
2023
·
Ann N. Nguyen
, Prajkta Mane
, et al.
·
Science Advances
·
40
PDF
Presolar Stardust in Asteroid Ryugu
2022
·
Jens Barosch
, Larry R. Nittler
, et al.
·
The Astrophysical Journal Letters
·
40
PDF
The Ni isotopic composition of Ryugu reveals a common accretion region for carbonaceous chondrites
2024
·
Fridolin Spitzer
, Thorsten Kleine
, et al.
·
Science Advances
·
36
The Solar System calcium isotopic composition inferred from Ryugu samples
2022
·
F. Moynier
, W. Dai
, et al.
·
Geochemical Perspectives Letters
·
27
PDF
Pervasive aqueous alteration in the early Solar System revealed by potassium isotopic variations in Ryugu samples and carbonaceous chondrites
2023
·
Yan Hu
, Frédéric Moynier
, et al.
·
Icarus
·
19
PDF
Disequilibrium oxygen isotope distribution among aqueously altered minerals in Ryugu asteroid returned samples
2024
·
Noriko T. Kita
, Kouki Kitajima
, et al.
·
Meteoritics and Planetary Science
·
18
PDF
Evaluation of the Residual Mass Fractionation in High‐Precision Cr Isotopic Analysis with TIMS
2023
·
Tetsuya Yokoyama
, Yusuke Ohkuma
, et al.
·
Geostandards and Geoanalytical Research
·
16
PDF
Late fluid flow in a primitive asteroid revealed by Lu–Hf isotopes in Ryugu
2025
·
Tsuyoshi Iizuka
, Takazo Shibuya
, et al.
·
Nature
·
13
PDF
The Magnesium Isotope Composition of Samples Returned from Asteroid Ryugu
2023
·
Martin Bizzarro
, Martin Schiller
, et al.
·
The Astrophysical Journal Letters
·
13
PDF
The Oxygen Isotopic Composition of Samples Returned from Asteroid Ryugu with Implications for the Nature of the Parent Planetesimal
2023
·
Haolan Tang
, Edward D. Young
, et al.
·
The Planetary Science Journal
·
12
PDF
Neodymium‐142 deficits and samarium neutron stratigraphy of C‐type asteroid (162173) Ryugu
2023
·
Zachary A. Torrano
, Michelle K. Jordan
, et al.
·
Meteoritics and Planetary Science
·
11
PDF
Nucleosynthetic s-Process Depletion in Mo from Ryugu samples returned by Hayabusa2
2023
·
N. Nakanishi
, T. Yokoyama
, et al.
·
Geochemical Perspectives Letters
·
11
PDF
Hydrogen Isotopic Composition of Hydrous Minerals in Asteroid Ryugu
2023
·
Laurette Piani
, Kazuhide Nagashima
, et al.
·
The Astrophysical Journal Letters
·
11
PDF
Role of fractionation correction in accurate determination of 142Nd/144Nd by TIMS: A case study of 1.48 Ga alkaline rocks from Khariar, India
2017
·
Ikshu Gautam
, Jyotiranjan S. Ray
, et al.
·
Chemical Geology
·
11
Pyrrhotites in asteroid 162173 Ryugu: Records of the initial changes on their surfaces with aqueous alteration
2024
·
Hiroharu Yui
, Shu-hei Urashima
, et al.
·
Geochimica et Cosmochimica Acta
·
7
Hydrogen in magnetite from asteroid Ryugu
2024
·
J. Aléon
, S. Mostefaoui
, et al.
·
Meteoritics and Planetary Science
·
6
PDF
Five-stage multielement separation procedure: A unique and essential tool for the multi-isotopic analyses of precious (<30 mg) extraterrestrial materials
2025
·
Ikshu Gautam
, Tetsuya Yokoyama
, et al.
·
GEOCHEMICAL JOURNAL
·
4
PDF
Zirconium isotope composition indicates s‐process depletion in samples returned from asteroid Ryugu
2024
·
Maria Schönbächler
, Manuela A. Fehr
, et al.
·
Meteoritics and Planetary Science
·
4
PDF
The parent bodies of Ryugu and Ivuna formed before those of other carbonaceous chondrites
2026
·
Noriyuki Kawasaki
, Kazuhide Nagashima
, et al.
·
Science
·
3
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Works count:
43
Citation count:
1,029
H-index:
13
I10-index:
20
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