Ian U. Roederer

4.3k citations

89 papers · 2.2k indexed · 1 hit paper · h-index 27

Impact in

Instrumentation top 1%
- Astronomy and Astrophysical Research
Astronomy and Astrophysics top 1%
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Gamma-ray bursts and supernovae
- Astro and Planetary Science
- Pulsars and Gravitational Waves Research

Papers in ⓘ

Instrumentation 27
- Astronomy and Astrophysical Research 27
Astronomy and Astrophysics 81
- Stellar, planetary, and galactic studies 75
- Astrophysics and Star Formation Studies 34
- Gamma-ray bursts and supernovae 30
- Astro and Planetary Science 25
- Astrophysical Phenomena and Observations 4

Co-authors: C. Sneden (18 shared papers)Anna Frebel (29 shared papers)J. J. Cowan (18 shared papers)Stephen A. Shectman (6 shared papers)J. E. Lawler (17 shared papers)Vinicius M. Placco (27 shared papers)Timothy C. Beers (23 shared papers)George W. Preston (4 shared papers)
Journals: The Astrophysical Journal (30 papers)Monthly Notices of the Royal Astronomical Society (17 papers)The Astrophysical Journal Supplement Series (7 papers)The Astronomical Journal (6 papers)The Astrophysical Journal Letters (6 papers)
Partner nations: United States Australia Brazil

In The Last Decade

Ian U. Roederer

80 papers receiving 2.1k citations

Hit Papers

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A SEARCH FOR STARS OF VERY LOW METAL ABUNDANCE. VI. DETAILED ABUNDANCES OF 313 METAL-POOR STARS 2014 · 286 citations

Peers

Countries citing papers authored by Ian U. Roederer

Since Specialization

Citations

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

Fields of papers citing papers by Ian U. Roederer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ian U. Roederer. 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 Ian U. Roederer. The network helps show where Ian U. Roederer may publish in the future.

Co-authors

The 25 scholars most cited alongside Ian U. Roederer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Ian U. Roederer Line = papers co-authored together Ian U. Roederer links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 89 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	A SEARCH FOR STARS OF VERY LOW METAL ABUNDANCE. VI. DETAILED ABUNDANCES OF 313 METAL-POOR STARS The Astronomical Journal ·Ian U. Roederer, George W. Preston, Ian B. Thompson, Stephen A. Shectman, C. Sneden, Greg Burley, Daniel D. Kelson Hit paper breakdown →	2014	286
2	OBSERVATIONAL CONSTRAINTS ON FIRST-STAR NUCLEOSYNTHESIS. I. EVIDENCE FOR MULTIPLE PROGENITORS OF CEMP-NO STARS The Astrophysical Journal ·Jinmi Yoon, Timothy C. Beers, Vinicius M. Placco, Kaitlin C. Rasmussen, D. Carollo, Siyu He, Terese T. Hansen, Ian U. Roederer, Jeff Zeanah	2016	121
3	Iron and neutron-capture element abundance variations in the globular cluster M2 (NGC 7089)★ Monthly Notices of the Royal Astronomical Society ·David Yong, Ian U. Roederer, F. Grundahl, G. S. Da Costa, Amanda I. Karakas, John E. Norris, Wako Aoki, C. K. Fishlock, A. F. Marino, A. P. Milone, Luke J. Shingles	2014	102
4	NEW HUBBLE SPACE TELESCOPE OBSERVATIONS OF HEAVY ELEMENTS IN FOUR METAL-POOR STARS The Astrophysical Journal Supplement Series ·Ian U. Roederer, J. E. Lawler, Jennifer Sobeck, Timothy C. Beers, J. J. Cowan, Anna Frebel, Inese I. Ivans, H. Schatz, C. Sneden, Ian B. Thompson	2012	83
5	ELEMENTAL ABUNDANCE DIFFERENCES IN THE 16 CYGNI BINARY SYSTEM: A SIGNATURE OF GAS GIANT PLANET FORMATION? The Astrophysical Journal ·I. Ramírez, J. Meléndez, D. Cornejo, Ian U. Roederer, J. R. Fish	2011	79
6	RR-Lyrae-type pulsations from a 0.26-solar-mass star in a binary system Nature ·G. Pietrzyński, I. B. Thompson, W. Gieren, D. Graczyk, K. Stȩpień, G. Bono, P. G. Prada Moroni, B. Pilecki, A. Udalski, I. Soszyński, George W. Preston, N. Nardetto, A. McWilliam, Ian U. Roederer, Marek Górski, P. Konorski, J. Storm	2012	76
7	THE END OF NUCLEOSYNTHESIS: PRODUCTION OF LEAD AND THORIUM IN THE EARLY GALAXY The Astrophysical Journal ·Ian U. Roederer, Karl Kratz, Anna Frebel, N. Christlieb, B. Pfeiffer, J. J. Cowan, C. Sneden	2009	75
8	High precision differential abundance measurements in globular clusters: chemical inhomogeneities in NGC 6752★ Monthly Notices of the Royal Astronomical Society ·David Yong, J. Meléndez, F. Grundahl, Ian U. Roederer, John E. Norris, A. P. Milone, A. F. Marino, P. Coelho, B. McArthur, K. Lind, R. Collet, M. Asplund	2013	69
9	Linemake: An Atomic and Molecular Line List Generator Research Notes of the AAS ·Vinicius M. Placco, C. Sneden, Ian U. Roederer, J. E. Lawler, E. A. Den Hartog, Neda Hejazi, Zachary G. Maas, P. F. Bernath	2021	60
10	The double sub-giant branch of NGC 6656 (M 22): a chemical characterization Astronomy and Astrophysics ·A. F. Marino, A. P. Milone, C. Sneden, M. Bergemann, Robert P. Kraft, George Wallerstein, S. Cassisi, A. Aparicio, M. Asplund, L. R. Bedin, M. Hilker, K. Lind, Y. Momany, G. Piotto, Ian U. Roederer, P. B. Stetson, M. Zoccali	2012	54
11	THE CHEMICAL ABUNDANCES OF STARS IN THE HALO (CASH) PROJECT. II. A SAMPLE OF 14 EXTREMELY METAL-POOR STARS, The Astrophysical Journal ·Julie K. Hollek, Anna Frebel, Ian U. Roederer, Christopher Sneden, Matthew Shetrone, Timothy C. Beers, Sung-Ju Kang, Christopher Thom	2011	54
12	The R-Process Alliance: A Comprehensive Abundance Analysis of HD 222925, a Metal-poor Star with an Extreme R-process Enhancement of [Eu/H] = −0.14* The Astrophysical Journal ·Ian U. Roederer, Charli M. Sakari, Vinicius M. Placco, Timothy C. Beers, Rana Ezzeddine, Anna Frebel, Terese T. Hansen	2018	51
13	Evidence for an Aspherical Population III Supernova Explosion Inferred from the Hyper-metal-poor Star HE 1327–2326^∗ The Astrophysical Journal ·Rana Ezzeddine, Anna Frebel, Ian U. Roederer, Nozomu Tominaga, Jason Tumlinson, Miho N. Ishigaki, K. Nomoto, Vinicius M. Placco, Wako Aoki	2019	46
14	NEW ABUNDANCE DETERMINATIONS OF CADMIUM, LUTETIUM, AND OSMIUM IN THE r -PROCESS ENRICHED STAR BD +17 3248 ^, The Astrophysical Journal Letters ·Ian U. Roederer, Christopher Sneden, J. E. Lawler, J. J. Cowan	2010	46
15	M2FS: the Michigan/Magellan Fiber System Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE ·Mario Mateo, John I. Bailey, Jeffrey D. Crane, Stephen A. Shectman, I. Thompson, Ian U. Roederer, Bruce C. Bigelow, Steve Gunnels	2012	42
16	Nine new metal-poor stars on the subgiant and red horizontal branches with high levels of r-process enhancement★ Monthly Notices of the Royal Astronomical Society ·Ian U. Roederer, J. J. Cowan, George W. Preston, Stephen A. Shectman, Christopher Sneden, I. B. Thompson	2014	40
17	Europium, Samarium, and Neodymium Isotopic Fractions in Metal‐Poor Stars The Astrophysical Journal ·Ian U. Roederer, J. E. Lawler, C. Sneden, J. J. Cowan, Jennifer Sobeck, C. A. Pilachowski	2008	40
18	HEAVY-ELEMENT DISPERSION IN THE METAL-POOR GLOBULAR CLUSTER M92 The Astronomical Journal ·Ian U. Roederer, C. Sneden	2011	38
19	Chemical abundances in bright giants of the globular cluster M62 (NGC 6266)★ Monthly Notices of the Royal Astronomical Society ·David Yong, Alan Alves Brito, G. S. Da Costa, J. Alonso-García, Amanda I. Karakas, M. Pignatari, Ian U. Roederer, Wako Aoki, C. K. Fishlock, F. Grundahl, John E. Norris	2014	34
20	GERMANIUM, ARSENIC, AND SELENIUM ABUNDANCES IN METAL-POOR STARS* The Astrophysical Journal ·Ian U. Roederer	2012	33

About Ian U. Roederer

Ian U. Roederer is a scholar working on Instrumentation, Astronomy and Astrophysics, Nuclear and High Energy Physics, Geophysics and Computational Mechanics, having authored 89 papers that have together received 2.2k indexed citations. Recurring topics across this work include Stellar, planetary, and galactic studies (75 papers), Astrophysics and Star Formation Studies (34 papers), Gamma-ray bursts and supernovae (30 papers), Astronomy and Astrophysical Research (27 papers), Astro and Planetary Science (25 papers), Astronomical and nuclear sciences (18 papers), Nuclear physics research studies (13 papers) and Astrophysical Phenomena and Observations (4 papers). The work is most often cited by research in Instrumentation (785 citations), Astronomy and Astrophysics (2.1k citations), Nuclear and High Energy Physics (417 citations), Geophysics (58 citations) and Atomic and Molecular Physics, and Optics (109 citations). Ian U. Roederer has collaborated with scholars based in United States, Australia and Brazil. Frequent co-authors include C. Sneden, Anna Frebel, J. J. Cowan, Stephen A. Shectman, J. E. Lawler, Vinicius M. Placco, Timothy C. Beers, George W. Preston, Ian B. Thompson and Daniel D. Kelson. Their work appears in journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society, The Astrophysical Journal Supplement Series, The Astronomical Journal and The Astrophysical Journal Letters.

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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