I. Ramírez

8.5k citations

79 papers · 5.1k · 3 hit papers · h-index 40

Impact in

Instrumentation top 0.5%
- Astronomy and Astrophysical Research
Astronomy and Astrophysics top 0.5%
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astro and Planetary Science
- Gamma-ray bursts and supernovae
- Solar and Space Plasma Dynamics
- Galaxies: Formation, Evolution, Phenomena

Papers in

Astronomy and Astrophysics 76
- Stellar, planetary, and galactic studies 74
- Astro and Planetary Science 55
- Astrophysics and Star Formation Studies 43
- Gamma-ray bursts and supernovae 8
- Solar and Space Plasma Dynamics 4
Instrumentation 22
- Astronomy and Astrophysical Research 22

Co-authors: J. Meléndez (58 shared papers)M. Asplund (46 shared papers)L. Casagrande (20 shared papers)David Yong (22 shared papers)Carlos Allende Prieto (5 shared papers)S. Feltzing (4 shared papers)S. Cassisi (2 shared papers)David L. Lambert (9 shared papers)
Journals: Astronomy and Astrophysics (24 papers)The Astrophysical Journal (18 papers)Monthly Notices of the Royal Astronomical Society (8 papers)The Astronomical Journal (3 papers)The Astrophysical Journal Letters (2 papers)
Partner nations: United States Brazil Australia

In The Last Decade

I. Ramírez

76 papers receiving 4.8k citations

I. Ramírez's Hit Papers

align trajectories log scale

New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s) 2011 · 502 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2011 Astronomy and Astrophysics
2011 Scientific Electronic Library Online (São Paulo Research Foundation, Latin American and Caribbean Center on Health Sciences Information, Conselho Nacional de Desenvolvimento Científico e Tecnológico)
2010 Astronomy and Astrophysics

Peers

Countries citing papers authored by I. Ramírez

Since Specialization

Citations

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

Fields of papers citing papers by I. Ramírez

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside I. Ramírez, 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 I. Ramírez Line = papers co-authored together I. Ramírez links everyone, so they are left out of the graph.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Showing the 20 most-cited of 79 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s) Astronomy and Astrophysics ·L. Casagrande, Ralph Schönrich, M. Asplund, S. Cassisi, I. Ramírez, J. Meléndez, T. Bensby, S. Feltzing Hit paper breakdown →	2011	502
2	An absolutely calibratedT_effscale from the infrared flux method Astronomy and Astrophysics ·L. Casagrande, I. Ramírez, J. Meléndez, M. S. Bessell, M. Asplund Hit paper breakdown →	2010	396
3	New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey Scientific Electronic Library Online (São Paulo Research Foundation, Latin American and Caribbean Center on Health Sciences Information, Conselho Nacional de Desenvolvimento Científico e Tecnológico) ·L. Casagrande, (unknown), M. Asplund, S. Cassisi, I. Ramírez, J. Meléndez, T. Bensby, S. Feltzing Hit paper breakdown →	2011	356
4	The Effective Temperature Scale of FGK Stars. II.T_eff: Color : [Fe/H] Calibrations The Astrophysical Journal ·I. Ramírez, J. Meléndez	2005	349
5	Accurate abundance patterns of solar twins and analogs Astronomy and Astrophysics ·I. Ramírez, J. Meléndez, M. Asplund	2009	195
6	The Effective Temperature Scale of FGK Stars. I. Determination of Temperatures and Angular Diameters with the Infrared Flux Method The Astrophysical Journal ·I. Ramírez, J. Meléndez	2005	147
7	Chemical similarities between Galactic bulge and local thick disk red giants: O, Na, Mg, Al, Si, Ca, and Ti Astronomy and Astrophysics ·Alan Alves-Brito, J. Meléndez, M. Asplund, I. Ramírez, David Yong	2010	144
8	Chemical similarities between Galactic bulge and local thick disk red giant stars Astronomy and Astrophysics ·J. Meléndez, M. Asplund, Alan Alves-Brito, Kátia Cunha, B. Barbuy, M. S. Bessell, C. Chiappini, K. C. Freeman, I. Ramírez, Verne V. Smith, David Yong	2008	128
9	FUNDAMENTAL PARAMETERS AND CHEMICAL COMPOSITION OF ARCTURUS The Astrophysical Journal ·I. Ramírez, Carlos Allende Prieto	2011	125
10	Oxygen abundances in nearby stars Astronomy and Astrophysics ·I. Ramírez, Carlos Allende Prieto, David L. Lambert	2006	122
11	The Solar Twin Planet Search Astronomy and Astrophysics ·I. Ramírez, J. Meléndez, Jacob L. Bean, M. Asplund, Megan Bedell, TalaWanda R. Monroe, L. Casagrande, Lucas Schirbel, S. Dreizler, Johanna Teske, Marcelo Tucci Maia, Alan Alves-Brito, Patrick Baumann	2014	118
12	LITHIUM ABUNDANCES IN NEARBY FGK DWARF AND SUBGIANT STARS: INTERNAL DESTRUCTION, GALACTIC CHEMICAL EVOLUTION, AND EXOPLANETS The Astrophysical Journal ·I. Ramírez, J. R. Fish, David L. Lambert, Carlos Allende Prieto	2012	108
13	The remarkable solar twin HIP 56948: a prime target in the quest for other Earths Astronomy and Astrophysics ·J. Meléndez, M. Bergemann, Judith G. Cohen, M. Endl, Amanda I. Karakas, I. Ramírez, William D. Cochran, David Yong, Phillip J. MacQueen, Chiaki Kobayashi, M. Asplund	2012	107
14	Large Excess of Heavy Nitrogen in Both Hydrogen Cyanide and Cyanogen from Comet 17P/Holmes The Astrophysical Journal ·D. Bockelée-Morvan, N. Biver, E. Jehin, A. L. Cochran, H. Wiesemeyer, J. Manfroid, Damien Hutsemékers, C. Arpigny, J. Boissier, William D. Cochran, P. Colom, J. Crovisier, Nikola Milutinović, Ramón Moreno, J. X. Prochaska, I. Ramírez, R. Schulz, J. M. Zucconi	2008	96
15	Confirmation of Errors inHipparcosParallaxes fromHubble Space TelescopeFine Guidance Sensor Astrometry of the Pleiades The Astronomical Journal ·David R. Soderblom, E. Nelan, G. F. Benedict, B. McArthur, I. Ramírez, W. J. Spiesman, B. F. Jones	2005	93
16	Lithium depletion in solar-like stars: no planet connection Springer Link (Chiba Institute of Technology) ·Patrick Baumann, I. Ramírez, J. Meléndez	2010	82
17	STELLAR CHEMICAL ABUNDANCES: IN PURSUIT OF THE HIGHEST ACHIEVABLE PRECISION The Astrophysical Journal ·Megan Bedell, J. Meléndez, Jacob L. Bean, I. Ramírez, Paulo Leite, M. Asplund	2014	80
18	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
19	A possible signature of terrestrial planet formation in the chemical composition of solar analogs Springer Link (Chiba Institute of Technology) ·I. Ramírez, M. Asplund, Patrick Baumann, J. Meléndez, T. Bensby	2010	77
20	18 Sco: A SOLAR TWIN RICH IN REFRACTORY AND NEUTRON-CAPTURE ELEMENTS. IMPLICATIONS FOR CHEMICAL TAGGING The Astrophysical Journal ·J. Meléndez, I. Ramírez, Amanda I. Karakas, David Yong, TalaWanda R. Monroe, Megan Bedell, M. Bergemann, M. Asplund, Marcelo Tucci Maia, Jacob L. Bean, J.-D. do Nascimento, M. Bazot, Alan Alves-Brito, Fabrício C. Freitas, (unknown)	2014	74

About I. Ramírez

I. Ramírez is a scholar working on Astronomy and Astrophysics, Instrumentation, Nuclear and High Energy Physics, Aerospace Engineering and Atomic and Molecular Physics, and Optics, having authored 79 papers that have together received 5.1k indexed citations. Recurring topics across this work include Stellar, planetary, and galactic studies (74 papers), Astro and Planetary Science (55 papers), Astrophysics and Star Formation Studies (43 papers), Astronomy and Astrophysical Research (22 papers), Gamma-ray bursts and supernovae (8 papers), Astronomical and nuclear sciences (7 papers), Solar and Space Plasma Dynamics (4 papers) and Adaptive optics and wavefront sensing (2 papers). The work is most often cited by research in Instrumentation (1.9k citations), Astronomy and Astrophysics (4.9k citations), Nuclear and High Energy Physics (412 citations), Geophysics (105 citations) and Atmospheric Science (133 citations). I. Ramírez has collaborated with scholars based in United States, Brazil and Australia. Frequent co-authors include J. Meléndez, M. Asplund, L. Casagrande, David Yong, Carlos Allende Prieto, S. Feltzing, S. Cassisi, David L. Lambert, M. S. Bessell and Alan Alves-Brito. Their work appears in journals such as Astronomy and Astrophysics, The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society, 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.

Explore authors with similar magnitude of impact

I. Ramírez

Impact in

Papers in i

In The Last Decade

I. Ramírez

I. Ramírez's Hit Papers

Peers

Countries citing papers authored by I. Ramírez

Fields of papers citing papers by I. Ramírez

All Works

About I. Ramírez

Explore authors with similar magnitude of impact

Papers in