Ryan Leaman

2.7k total citations · 1 hit paper
59 papers, 1.9k citations indexed

About

Ryan Leaman is a scholar working on Astronomy and Astrophysics, Instrumentation and Computational Mechanics. According to data from OpenAlex, Ryan Leaman has authored 59 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 55 papers in Astronomy and Astrophysics, 34 papers in Instrumentation and 3 papers in Computational Mechanics. Recurrent topics in Ryan Leaman's work include Galaxies: Formation, Evolution, Phenomena (51 papers), Stellar, planetary, and galactic studies (48 papers) and Astronomy and Astrophysical Research (34 papers). Ryan Leaman is often cited by papers focused on Galaxies: Formation, Evolution, Phenomena (51 papers), Stellar, planetary, and galactic studies (48 papers) and Astronomy and Astrophysical Research (34 papers). Ryan Leaman collaborates with scholars based in Germany, Spain and United States. Ryan Leaman's co-authors include Don A. VandenBerg, K. Brogaard, L. Casagrande, Glenn van de Ven, J. Trevor Mendel, J. Falcón‐Barroso, G. Battaglia, Andrew A. Cole, Alan W. McConnachie and M. Lyubenova and has published in prestigious journals such as Nature, The Astrophysical Journal and Monthly Notices of the Royal Astronomical Society.

In The Last Decade

Ryan Leaman

55 papers receiving 1.8k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

THE AGES OF 55 GLOBULAR CLUSTERS AS DETERMINED USING AN IMPROVED $\Delta V^{\rm HB}_{\rm TO}$ METHOD ALONG WITH COLOR-MAGNITUDE DIAGRAM CONSTRAINTS, AND THEIR IMPLICATIONS FOR BROADER ISSUES

2013 321 citations Ryan Leaman et al. The Astrophysical Journal profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Ryan Leaman Germany	26	1.8k	965	101	56	53	59	1.9k
M. Lyubenova Germany	26	1.4k 0.8×	874 0.9×	78 0.8×	68 1.2×	61 1.2×	62	1.5k
Patrick R. Durrell United States	26	1.7k 0.9×	941 1.0×	100 1.0×	55 1.0×	58 1.1×	66	1.7k
P. Coelho Brazil	21	1.6k 0.8×	949 1.0×	70 0.7×	59 1.1×	40 0.8×	56	1.6k
David Martínez‐Delgado Spain	29	2.4k 1.3×	1.2k 1.3×	156 1.5×	57 1.0×	46 0.9×	74	2.4k
Gergö Popping Germany	25	1.7k 0.9×	738 0.8×	221 2.2×	73 1.3×	50 0.9×	69	1.8k
Alexandre Roman–Lopes Chile	22	1.8k 1.0×	827 0.9×	80 0.8×	38 0.7×	35 0.7×	68	1.8k
Ling Zhu China	24	1.1k 0.6×	663 0.7×	76 0.8×	67 1.2×	57 1.1×	67	1.2k
R. F. J. van der Burg United States	26	1.6k 0.9×	1.0k 1.0×	200 2.0×	50 0.9×	69 1.3×	58	1.7k
C. J. Walcher Germany	25	1.8k 1.0×	868 0.9×	117 1.2×	80 1.4×	72 1.4×	39	1.8k
B. Ziegler Germany	25	1.8k 1.0×	1.0k 1.1×	164 1.6×	54 1.0×	67 1.3×	78	1.8k

Countries citing papers authored by Ryan Leaman

Since Specialization

Citations

This map shows the geographic impact of Ryan Leaman'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 Ryan Leaman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ryan Leaman more than expected).

Fields of papers citing papers by Ryan Leaman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ryan Leaman. 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 Ryan Leaman. The network helps show where Ryan Leaman may publish in the future.

Co-authorship network of co-authors of Ryan Leaman

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan Leaman. A scholar is included among the top collaborators of Ryan Leaman 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 Ryan Leaman. Ryan Leaman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Wisnioski, Emily, et al.. (2025). Evolution of gas velocity dispersion in discs from z ∼ 8 to z ∼ 0.5. Monthly Notices of the Royal Astronomical Society. 544(3). 2777–2794.

Taibi, Salvatore, G. Battaglia, Martin M. Roth, et al.. (2024). From gas to stars: MUSEings on the internal evolution of IC 1613. Astronomy and Astrophysics. 689. A88–A88. 1 indexed citations

Larsen, S. S., et al.. (2024). Detailed chemical composition of the globular cluster Sextans A GC-1 on the outskirts of the Local Group. Astronomy and Astrophysics. 685. A154–A154. 3 indexed citations

Ven, Glenn van de, et al.. (2023). Total mass slopes and enclosed mass constrained by globular cluster system dynamics. Astronomy and Astrophysics. 681. A46–A46. 1 indexed citations

Neumayer, Nadine, et al.. (2022). The origin of stars in the inner 500 parsecs in TNG50 galaxies. Monthly Notices of the Royal Astronomical Society. 519(4). 5202–5235. 11 indexed citations

Kacharov, N., Nadine Neumayer, Nora Lützgendorf, et al.. (2022). A Deep View into the Nucleus of the Sagittarius Dwarf Spheroidal Galaxy with MUSE. III. Discrete Multicomponent Population-dynamical Models Based on the Jeans Equations. The Astrophysical Journal. 939(2). 118–118. 13 indexed citations

Fahrion, Katja, M. Hilker, Ryan Leaman, et al.. (2022). Nuclear star cluster formation in star-forming dwarf galaxies. Astronomy and Astrophysics. 667. A101–A101. 26 indexed citations

Fahrion, Katja, M. Lyubenova, Glenn van de Ven, et al.. (2021). Diversity of nuclear star cluster formation mechanisms revealed by their star formation histories. Springer Link (Chiba Institute of Technology). 41 indexed citations

Norris, Mark A., et al.. (2021). Mapping accreted stars in early-type galaxies across the mass–size plane. Monthly Notices of the Royal Astronomical Society. 507(2). 3089–3112. 16 indexed citations

10.

Álamo-Martínez, Karla, Ana L. Chies-Santos, Michael A. Beasley, et al.. (2021). Globular cluster systems of relic galaxies. Monthly Notices of the Royal Astronomical Society. 503(2). 2406–2422. 6 indexed citations

11.

Zhu, Ling, Glenn van de Ven, Ryan Leaman, et al.. (2020). Disentangling the formation history of galaxies via population-orbit superposition: method validation. Monthly Notices of the Royal Astronomical Society. 496(2). 1579–1597. 34 indexed citations

12.

Fahrion, Katja, M. Lyubenova, M. Hilker, et al.. (2020). The Fornax 3D project: Non-linear colour–metallicity relation of globular clusters. Springer Link (Chiba Institute of Technology). 25 indexed citations

13.

Bittner, A., P. Sánchez–Blázquez, Dimitri A. Gadotti, et al.. (2020). Inside-out formation of nuclear discs and the absence of old central spheroids in barred galaxies of the TIMER survey. Astronomy and Astrophysics. 643. A65–A65. 54 indexed citations

14.

Fahrion, Katja, M. Lyubenova, Glenn van de Ven, et al.. (2019). Constraining nuclear star cluster formation using MUSE-AO observations of the early-type galaxy FCC 47. Springer Link (Chiba Institute of Technology). 29 indexed citations

15.

Weisz, Daniel R., Andrew A. Cole, Andrew E. Dolphin, et al.. (2019). Star formation at the edge of the Local Group: a rising star formation history in the isolated galaxy WLM. Monthly Notices of the Royal Astronomical Society. 490(4). 5538–5550. 33 indexed citations

16.

Norris, Mark A., Glenn van de Ven, Sheila J. Kannappan, Eva Schinnerer, & Ryan Leaman. (2019). Is there a fundamental upper limit to the mass of a star cluster?. Monthly Notices of the Royal Astronomical Society. 488(4). 5400–5408. 14 indexed citations

17.

Taibi, Salvatore, G. Battaglia, Giuliano Iorio, et al.. (2019). Kinematic and metallicity properties of the Aquarius dwarf galaxy from FORS2 MXU spectroscopy. Astronomy and Astrophysics. 634. A10–A10. 11 indexed citations

18.

Taibi, Salvatore, G. Battaglia, N. Kacharov, et al.. (2018). Stellar chemo-kinematics of the Cetus dwarf spheroidal galaxy. Springer Link (Chiba Institute of Technology). 24 indexed citations

19.

Beasley, Michael A., Ignacio Trujillo, Ryan Leaman, & Mireia Montes. (2018). A single population of red globular clusters around the massive compact galaxy NGC 1277. Nature. 555(7697). 483–486. 56 indexed citations

20.

Lisker, T., Joachim Janz, Glenn van de Ven, et al.. (2017). Young, metal-enriched cores in early-type dwarf galaxies in the Virgo cluster based on colour gradients. Springer Link (Chiba Institute of Technology). 21 indexed citations

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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