S. M. Viegas

1.3k total citations
48 papers, 853 citations indexed

About

S. M. Viegas is a scholar working on Astronomy and Astrophysics, Instrumentation and Spectroscopy. According to data from OpenAlex, S. M. Viegas has authored 48 papers receiving a total of 853 indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Astronomy and Astrophysics, 15 papers in Instrumentation and 5 papers in Spectroscopy. Recurrent topics in S. M. Viegas's work include Stellar, planetary, and galactic studies (31 papers), Astrophysics and Star Formation Studies (30 papers) and Galaxies: Formation, Evolution, Phenomena (22 papers). S. M. Viegas is often cited by papers focused on Stellar, planetary, and galactic studies (31 papers), Astrophysics and Star Formation Studies (30 papers) and Galaxies: Formation, Evolution, Phenomena (22 papers). S. M. Viegas collaborates with scholars based in Brazil, United States and Israel. S. M. Viegas's co-authors include Ruth Gruenwald, A. Rodríguez-Ardila, M. Contini, M. Prieto, R. E. S. Clegg, J. A. S. Lima, Gary Steigman, M. G. Pastoriza, M. G. Pastoriza and T. A. A. Sigut and has published in prestigious journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society and Computer Physics Communications.

In The Last Decade

S. M. Viegas

44 papers receiving 816 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S. M. Viegas Brazil	17	829	131	116	49	23	48	853
H. Hippelein Germany	15	637 0.8×	249 1.9×	92 0.8×	37 0.8×	9 0.4×	45	670
U. Mebold Germany	14	724 0.9×	126 1.0×	156 1.3×	19 0.4×	23 1.0×	76	738
Linda Dressel United States	14	802 1.0×	173 1.3×	240 2.1×	51 1.0×	7 0.3×	39	838
R. D. Cohen United States	18	1.3k 1.5×	200 1.5×	313 2.7×	50 1.0×	11 0.5×	51	1.3k
M. L. Lykins United States	8	524 0.6×	86 0.7×	90 0.8×	53 1.1×	14 0.6×	10	555
P. D. Dobbie United Kingdom	23	1.3k 1.6×	346 2.6×	176 1.5×	41 0.8×	25 1.1×	53	1.3k
Javier Álvarez-Márquez Spain	13	605 0.7×	205 1.6×	53 0.5×	32 0.7×	26 1.1×	21	637
M. Camenzind Germany	16	811 1.0×	76 0.6×	304 2.6×	41 0.8×	12 0.5×	66	842
T. G. Hawarden United Kingdom	15	547 0.7×	124 0.9×	74 0.6×	25 0.5×	9 0.4×	43	564
S. A. Grandi United States	15	597 0.7×	71 0.5×	145 1.3×	59 1.2×	20 0.9×	39	626

Countries citing papers authored by S. M. Viegas

Since Specialization

Citations

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

Fields of papers citing papers by S. M. Viegas

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S. M. Viegas. 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 S. M. Viegas. The network helps show where S. M. Viegas may publish in the future.

Co-authorship network of co-authors of S. M. Viegas

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

All Works

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

20 of 20 papers shown

Rodríguez-Ardila, A., M. G. Pastoriza, S. M. Viegas, T. A. A. Sigut, & Anil K. Pradhan. (2004). Molecular hydrogen and [Fe II] in Active Galactic Nuclei. Springer Link (Chiba Institute of Technology). 78 indexed citations

Contini, M., A. Rodríguez-Ardila, & S. M. Viegas. (2003). The narrow line region of Ark 564. Astronomy and Astrophysics. 408(1). 101–109. 13 indexed citations

Martins, Lucimara P., S. M. Viegas, & Ruth Gruenwald. (2003). Ultraviolet Continuum, Physical Conditions, and Filling Factor in Active Galactic Nuclei. The Astrophysical Journal. 587(2). 562–570. 4 indexed citations

Viegas, S. M., et al.. (2002). Physical conditions in quasi-stellar object absorbers from fine-structure absorption lines. Monthly Notices of the Royal Astronomical Society. 329(1). 135–148. 54 indexed citations

Monteiro, H., Ruth Gruenwald, C. Morisset, & S. M. Viegas. (2002). Are all annular planetary nebulae really closed shells. LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas). 12. 170–170. 1 indexed citations

Martins, Lucimara P. & S. M. Viegas. (2002). Gas temperature and excitation classes in planetary nebulae. Astronomy and Astrophysics. 387(3). 1074–1082. 5 indexed citations

Contini, M., S. M. Viegas, & M. Prieto. (2002). The signature of high-velocity gas in the spectra of NGC 4151. Astronomy and Astrophysics. 386(2). 399–414. 10 indexed citations

Souza, R. de, S. M. Viegas, & Ruth Gruenwald. (2002). Optical Photometry and the Continuum of Active Galactic Nuclei. The Astrophysical Journal. 579(2). 517–529.

Rodríguez-Ardila, A., S. M. Viegas, M. G. Pastoriza, & L. Prato. (2002). Infrared FeiiEmission in Narrow‐Line Seyfert 1 Galaxies. The Astrophysical Journal. 565(1). 140–154. 29 indexed citations

10.

Contini, M. & S. M. Viegas. (2001). A Grid of Composite Models for the Simulation of Starburst Galaxy and H ii Region Spectra. The Astrophysical Journal Supplement Series. 137(1). 75–115. 14 indexed citations

11.

Viegas, S. M., Ruth Gruenwald, & Gary Steigman. (2000). Ionization Corrections for Low‐Metallicity HiiRegions and the Primordial Helium Abundance. The Astrophysical Journal. 531(2). 813–819. 34 indexed citations

12.

Prieto, M. & S. M. Viegas. (2000). On the Ionizing Continuum in Active Galactic Nuclei: Clues from theInfrared Space Observatory. The Astrophysical Journal. 532(1). 238–246. 15 indexed citations

13.

Morisset, C., Ruth Gruenwald, & S. M. Viegas. (2000). Morphology and Kinematics of Planetary Nebulae. I. A New Modeling Tool. The Astrophysical Journal. 533(2). 931–937. 6 indexed citations

14.

Viegas, S. M., et al.. (1997). Young Galaxies and QSO Absorption-Line Systems. ASPC. 114. 1 indexed citations

15.

Viegas, S. M. & M. Contini. (1997). Shocks and Photoionization in the Narrow-Line Region. International Astronomical Union Colloquium. 159. 365–377.

16.

Viegas, S. M., et al.. (1997). Spectroscopy of Seyfert 2 Galaxies, Liners, and H(II) Galaxies.. The Astronomical Journal. 114. 1345–1345. 39 indexed citations

17.

Viegas, S. M., et al.. (1997). Theoretical Emission‐Line Profiles of Active Galactic Nuclei and the Unified Model. I. The Face‐on Torus. The Astrophysical Journal. 474(2). 616–622. 3 indexed citations

18.

Gruenwald, Ruth & S. M. Viegas. (1995). Temperature fluctuations in planetary nebulae.. A&A. 303. 535.

19.

Gruenwald, Ruth & S. M. Viegas. (1992). Line-of-sight results from H II region models. The Astrophysical Journal Supplement Series. 78. 153–153. 30 indexed citations

20.

Viegas, S. M. & E. M. de Gouveia Dal Pino. (1992). The origin of the optical emission lines associated with extragalactic radio sources. The Astrophysical Journal. 384. 467–467. 10 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.

Explore authors with similar magnitude of impact