Hiroki Harakawa

825 total citations
12 papers, 110 citations indexed

About

Hiroki Harakawa is a scholar working on Astronomy and Astrophysics, Instrumentation and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Hiroki Harakawa has authored 12 papers receiving a total of 110 indexed citations (citations by other indexed papers that have themselves been cited), including 12 papers in Astronomy and Astrophysics, 3 papers in Instrumentation and 1 paper in Atomic and Molecular Physics, and Optics. Recurrent topics in Hiroki Harakawa's work include Stellar, planetary, and galactic studies (12 papers), Astrophysics and Star Formation Studies (11 papers) and Astro and Planetary Science (7 papers). Hiroki Harakawa is often cited by papers focused on Stellar, planetary, and galactic studies (12 papers), Astrophysics and Star Formation Studies (11 papers) and Astro and Planetary Science (7 papers). Hiroki Harakawa collaborates with scholars based in Japan, United States and Austria. Hiroki Harakawa's co-authors include Masashi Omiya, Bun’ei Sato, Yoichi Takeda, Tomoyuki Kudo, Eiji Kambe, Motohide Tamura, Masayuki Kuzuhara, Jun Nishikawa, K. W. Hodapp and M. Yoshida and has published in prestigious journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society and Publications of the Astronomical Society of Japan.

In The Last Decade

Hiroki Harakawa

11 papers receiving 101 citations

Peers

Countries citing papers authored by Hiroki Harakawa

Since Specialization

Citations

This map shows the geographic impact of Hiroki Harakawa's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Hiroki Harakawa with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Hiroki Harakawa more than expected).

Fields of papers citing papers by Hiroki Harakawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Hiroki Harakawa. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Hiroki Harakawa. The network helps show where Hiroki Harakawa may publish in the future.

Co-authorship network of co-authors of Hiroki Harakawa

This figure shows the co-authorship network connecting the top 25 collaborators of Hiroki Harakawa. A scholar is included among the top collaborators of Hiroki Harakawa based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Hiroki Harakawa. Hiroki Harakawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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12 of 12 papers shown

#	Work	Indexed citations
1	Transit spectroscopy of K2-33b with subaru/IRD: Spin-Orbit alignment and tentative atmospheric helium 2024 ·Monthly Notices of the Royal Astronomical Society ·Teruyuki Hirano, Eric Gaidos, Hiroki Harakawa, K. W. Hodapp, Takayuki Kotani, Tomoyuki Kudo, Takashi Kurokawa, Masayuki Kuzuhara, Andrew W. Mann, Jun Nishikawa, Masashi Omiya, Takuma Serizawa, Motohide Tamura, Pa Chia Thao, Akitoshi Ueda, Sébastien Vievard	6
2	Planet(esimal)s around stars with TESS (PAST) III: A search for triplet He i in the atmospheres of two 200 Myr-old planets 2022 ·Monthly Notices of the Royal Astronomical Society ·Eric Gaidos, Teruyuki Hirano, (unknown), Hiroki Harakawa, K. W. Hodapp, Shane Jacobson, Takayuki Kotani, Tomoyuki Kudo, Takashi Kurokawa, Masayuki Kuzuhara, Jun Nishikawa, Masashi Omiya, Takuma Serizawa, Motohide Tamura, Akitoshi Ueda, Sébastien Vievard	11
3	Optical spectroscopic monitoring of the symbiotic star MWC 560 before and after the 2018 unpredicted brightening 2021 ·Publications of the Astronomical Society of Japan ·(unknown), Naoya Fukuda, (unknown), Bun’ei Sato, (unknown), (unknown), Masashi Omiya, Hiroki Harakawa, Eiji Kambe, Hiroyuki Maehara, Hideyuki Izumiura	1
4	Zodiacal Exoplanets in Time (ZEIT). XIV. He i Transit Spectroscopy of the 650 Myr Hyades Planet K2-136c 2021 ·Research Notes of the AAS ·Eric Gaidos, Teruyuki Hirano, Masashi Omiya, Masayuki Kuzuhara, Takayuki Kotani, Motohide Tamura, Hiroki Harakawa, Tomoyuki Kudo	4
5	Zodiacal exoplanets in time – XIII. Planet orbits and atmospheres in the V1298 Tau system, a keystone in studies of early planetary evolution 2021 ·Monthly Notices of the Royal Astronomical Society ·Eric Gaidos, Teruyuki Hirano, C. A. Beichman, John H. Livingston, Hiroki Harakawa, K. W. Hodapp, Masato Ishizuka, Shane Jacobson, Mihoko Konishi, Takayuki Kotani, Tomoyuki Kudo, Takashi Kurokawa, Masayuki Kuzuhara, Jun Nishikawa, Masashi Omiya, Takuma Serizawa, Motohide Tamura, Akitoshi Ueda, Sébastien Vievard	11
6	Precision radial velocity measurements by the forward-modeling technique in the near-infrared 2020 ·Publications of the Astronomical Society of Japan ·Teruyuki Hirano, Masayuki Kuzuhara, Takayuki Kotani, Masashi Omiya, Tomoyuki Kudo, Hiroki Harakawa, Sébastien Vievard, Takashi Kurokawa, Jun Nishikawa, Motohide Tamura, K. W. Hodapp, Masato Ishizuka, Shane Jacobson, Mihoko Konishi, Takuma Serizawa, Akitoshi Ueda, Eric Gaidos, Bun’ei Sato	17
7	A Mass Limit for the Young Transiting Planet V1298 Tau b 2019 ·Research Notes of the AAS ·Charles Beichman, Teruyuki Hirano, Trevor J. David, Takayuki Kotani, Lynne A. Hillenbrand, Gautam Vasisht, David R. Ciardi, Hiroki Harakawa, Tomoyuki Kudo, Masashi Omiya, Masayuki Kuzuhara, Motohide Tamura	4
8	Sulfur and zinc abundances of red giant stars† 2016 ·Publications of the Astronomical Society of Japan ·Yoichi Takeda, Masashi Omiya, Hiroki Harakawa, Bun’ei Sato	15
9	FIVE NEW EXOPLANETS ORBITING THREE METAL-RICH, MASSIVE STARS: TWO-PLANET SYSTEMS INCLUDING LONG-PERIOD PLANETS AND AN ECCENTRIC PLANET 2015 ·The Astrophysical Journal ·Hiroki Harakawa, Bun’ei Sato, Masashi Omiya, Debra A. Fischer, Yasunori Hori, Shigeru Ida, Eiji Kambe, M. Yoshida, Hideyuki Izumiura, Hisashi Koyano, S. Nagayama, Yasuhiro Shimizu, Norio Okada, Kiichi Okita, Akihiro Sakamoto, Tomoyasu Yamamuro	12
10	A possible substellar companion to the intermediate-mass giant HD 175679 2012 ·Research in Astronomy and Astrophysics ·Liang Wang, Bun’ei Sato, Gang Zhao, Yujuan Liu, Kunio Noguchi, Hiroyasu Ando, Hideyuki Izumiura, Eiji Kambe, Masashi Omiya, Hiroki Harakawa, Fan Liu, Xiaoshu Wu, Yoichi Takeda, M. Yoshida, Eiichiro Kokubo	7
11	Search for Low-Mass Planets Around Late-M Dwarfs Using IRD 2012 ·Proceedings of the International Astronomical Union ·Masashi Omiya, Bun’ei Sato, Hiroki Harakawa, Masayuki Kuzuhara, Teruyuki Hirano, Norio Narita, (unknown)	0
12	A DOUBLE PLANETARY SYSTEM AROUND THE EVOLVED INTERMEDIATE-MASS STAR HD 4732 2012 ·The Astrophysical Journal ·Bun’ei Sato, Masashi Omiya, Robert A. Wittenmyer, Hiroki Harakawa, Makiko Nagasawa, Hideyuki Izumiura, Eiji Kambe, Yoichi Takeda, M. Yoshida, Yoichi Itoh, Hiroyasu Ando, Eiichiro Kokubo, Shigeru Ida	22

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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