Bret Lehmer

6.9k total citations · 1 hit paper
87 papers, 3.1k citations indexed

About

Bret Lehmer is a scholar working on Astronomy and Astrophysics, Nuclear and High Energy Physics and Instrumentation. According to data from OpenAlex, Bret Lehmer has authored 87 papers receiving a total of 3.1k indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Astronomy and Astrophysics, 34 papers in Nuclear and High Energy Physics and 17 papers in Instrumentation. Recurrent topics in Bret Lehmer's work include Galaxies: Formation, Evolution, Phenomena (76 papers), Astrophysical Phenomena and Observations (67 papers) and Astrophysics and Cosmic Phenomena (31 papers). Bret Lehmer is often cited by papers focused on Galaxies: Formation, Evolution, Phenomena (76 papers), Astrophysical Phenomena and Observations (67 papers) and Astrophysics and Cosmic Phenomena (31 papers). Bret Lehmer collaborates with scholars based in United States, United Kingdom and Greece. Bret Lehmer's co-authors include W. N. Brandt, D. M. Alexander, F. E. Bauer, Antara Basu‐Zych, A. Zezas, Donald P. Schneider, Tassos Fragos, A. Ptak, A. E. Hornschemeier and C. Vignali and has published in prestigious journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society and The Astrophysical Journal Supplement Series.

In The Last Decade

Bret Lehmer

82 papers receiving 3.0k 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.

Fitting AGN/Galaxy X-Ray-to-radio SEDs with CIGALE and Improvement of the Code

2022 109 citations Guang Yang, M. Boquien 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
Bret Lehmer United States	30	3.1k	1.0k	773	88	44	87	3.1k
L. Christensen Germany	30	2.8k 0.9×	742 0.7×	758 1.0×	103 1.2×	53 1.2×	115	2.9k
I. Hook United Kingdom	27	3.0k 1.0×	755 0.7×	975 1.3×	120 1.4×	66 1.5×	88	3.1k
S. C. Gallagher United States	28	2.9k 0.9×	718 0.7×	701 0.9×	64 0.7×	36 0.8×	98	3.0k
R. Della Ceca Italy	36	4.0k 1.3×	1.8k 1.8×	675 0.9×	90 1.0×	43 1.0×	137	4.1k
A. E. Hornschemeier United States	32	3.5k 1.2×	1.2k 1.2×	850 1.1×	108 1.2×	36 0.8×	92	3.6k
F. J. Carrera Spain	31	2.9k 0.9×	1.0k 1.0×	546 0.7×	71 0.8×	42 1.0×	131	3.0k
Ian D. McGreer United States	24	2.2k 0.7×	588 0.6×	671 0.9×	78 0.9×	72 1.6×	40	2.3k
C. N. Tadhunter United Kingdom	38	3.9k 1.3×	1.5k 1.5×	767 1.0×	67 0.8×	45 1.0×	156	4.0k
Nadia L. Zakamska United States	38	4.2k 1.4×	798 0.8×	1.2k 1.5×	76 0.9×	41 0.9×	122	4.3k
Fuyan Bian United States	25	2.3k 0.8×	470 0.5×	698 0.9×	75 0.9×	79 1.8×	85	2.4k

Countries citing papers authored by Bret Lehmer

Since Specialization

Citations

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

Fields of papers citing papers by Bret Lehmer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Bret Lehmer

This figure shows the co-authorship network connecting the top 25 collaborators of Bret Lehmer. A scholar is included among the top collaborators of Bret Lehmer 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 Bret Lehmer. Bret Lehmer 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

Lehmer, Bret, et al.. (2026). ADF22-WEB: ALMA and JWST (Sub)kiloparsec-scale Views of Dusty Star-forming Galaxies in a z ≈ 3 Protocluster. The Astrophysical Journal. 997(1). 79–79.

Umehata, Hideki, Charles C. Steidel, Ian Smail, et al.. (2025). ADF22-WEB: A giant barred spiral starburst galaxy in the z = 3.1 SSA22 protocluster core. Publications of the Astronomical Society of Japan. 77(2). 432–445. 6 indexed citations

Lebouteiller, V., Bret Lehmer, Antara Basu‐Zych, et al.. (2025). Emission-line Diagnostics for IMBHs in Dwarf Galaxies: Accounting for Black Hole Seeding and Ultraluminous X-Ray Source Excitation. The Astrophysical Journal. 993(1). 154–154.

Williams, Benjamin F., Breanna A. Binder, Bret Lehmer, et al.. (2024). Monitoring the X-Ray Variability of Bright X-Ray Sources in M33. The Astrophysical Journal. 961(2). 168–168.

Geda, Robel, et al.. (2024). The High-mass X-Ray Binary Luminosity Functions of Dwarf Galaxies. The Astrophysical Journal. 965(1). 67–67. 4 indexed citations

Misra, Devina, Konstantinos Kovlakas, Tassos Fragos, et al.. (2023). X-ray luminosity function of high-mass X-ray binaries: Studying the signatures of different physical processes using detailed binary evolution calculations. Astronomy and Astrophysics. 672. A99–A99. 14 indexed citations

Lehmer, Bret, et al.. (2023). The Large Deficit of HMXB Emission from Luminous Infrared Galaxies: The Case of the Circumnuclear Starburst Ring in NGC 7552. The Astrophysical Journal. 952(1). 22–22. 4 indexed citations

Basu‐Zych, Antara, Benjamin D. Johnson, P. Tzanavaris, et al.. (2023). Modeling the High-energy Ionizing Output from Simple Stellar and X-Ray Binary Populations. The Astrophysical Journal. 960(1). 13–13. 15 indexed citations

Yang, Guang, M. Boquien, W. N. Brandt, et al.. (2022). Fitting AGN/Galaxy X-Ray-to-radio SEDs with CIGALE and Improvement of the Code. The Astrophysical Journal. 927(2). 192–192. 109 indexed citations breakdown →

10.

Lehmer, Bret, Rafael T. Eufrasio, Antara Basu‐Zych, et al.. (2022). The Stellar-age Dependence of X-Ray Emission from Normal Star-forming Galaxies in the GOODS Fields. The Astrophysical Journal. 926(1). 28–28. 14 indexed citations

11.

Kovlakas, Konstantinos, A. Zezas, Jeff J. Andrews, et al.. (2021). The Heraklion Extragalactic Catalogue (HECATE): a value-added galaxy catalogue for multimessenger astrophysics. Monthly Notices of the Royal Astronomical Society. 506(2). 1896–1915. 24 indexed citations

12.

Lehmer, Bret, Rafael T. Eufrasio, Antara Basu‐Zych, et al.. (2021). The Metallicity Dependence of the High-mass X-Ray Binary Luminosity Function. The Astrophysical Journal. 907(1). 17–17. 62 indexed citations

13.

Kovlakas, Konstantinos, A. Zezas, Jeff J. Andrews, et al.. (2020). A census of ultraluminous X-ray sources in the local Universe. Monthly Notices of the Royal Astronomical Society. 498(4). 4790–4810. 56 indexed citations

14.

Hornschemeier, A. E., Daniel R. Wik, Mihoko Yukita, et al.. (2018). Black Holes and Neutron Stars in Nearby Galaxies: Insights from NuSTAR. The Astrophysical Journal. 864(2). 150–150. 15 indexed citations

15.

Brightman, Murray, Mislav Baloković, Michael Koss, et al.. (2018). A Long Hard-X-Ray Look at the Dual Active Galactic Nuclei of M51 with NuSTAR. The Astrophysical Journal. 867(2). 110–110. 11 indexed citations

16.

Yukita, Mihoko, A. Ptak, A. E. Hornschemeier, et al.. (2017). Identification of the Hard X-Ray Source Dominating the E > 25 keV Emission of the Nearby Galaxy M31. The Astrophysical Journal. 838(1). 47–47. 5 indexed citations

17.

Calhau, João, David Sobral, Andra Stroe, et al.. (2016). The growth of typical star-forming galaxies and their supermassive black holes across cosmic time sincez∼ 2. Monthly Notices of the Royal Astronomical Society. 464(1). 303–311. 9 indexed citations

18.

Lehmer, Bret, J. Tyler, A. E. Hornschemeier, et al.. (2015). THE 0.3–30 keV SPECTRA OF POWERFUL STARBURST GALAXIES:NuSTARANDCHANDRAOBSERVATIONS OF NGC 3256 AND NGC 3310. The Astrophysical Journal. 806(1). 126–126. 22 indexed citations

19.

Basu‐Zych, Antara, Bret Lehmer, A. E. Hornschemeier, et al.. (2013). The X-Ray Star Formation Story as Told by Lyman Break Galaxies in the 4 Ms CDF-S. Leiden Repository (Leiden University). 52 indexed citations

20.

Buat, V., J. Braine, Daniel A. Dale, et al.. (2012). Calibration of Star-Formation Rate Measurements Across the Electromagnetic Spectrum. Proceedings of the International Astronomical Union. 10(H16). 495–527. 1 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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