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Physics
Switzerland
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Physics 145 340 327 9 9 861 75982

Stéphane Udry publications per year

The chart shows the history of publications by Stéphane Udry between 1961 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Stéphane Udry published across 61 years, from 1961 to 2021, averaging 12.6 papers a year. Output peaked at 65 publications in 2020. 128 of the 766 publications appeared in the last two years.

No. of publications
20 40 60
Bar chart. Horizontal axis: year, 1961 to 2021. Vertical axis: number of publications, 0 to 65. Peak 65 publications in 2020. 1961: 1 publication 1962: 0 publications 1963: 0 publications 1964: 0 publications 1965: 0 publications 1966: 0 publications 1967: 0 publications 1968: 0 publications 1969: 0 publications 1970: 0 publications 1971: 0 publications 1972: 0 publications 1973: 0 publications 1974: 0 publications 1975: 0 publications 1976: 0 publications 1977: 0 publications 1978: 0 publications 1979: 0 publications 1980: 0 publications 1981: 0 publications 1982: 0 publications 1983: 0 publications 1984: 0 publications 1985: 0 publications 1986: 0 publications 1987: 1 publication 1988: 0 publications 1989: 0 publications 1990: 1 publication 1991: 1 publication 1992: 0 publications 1993: 2 publications 1994: 0 publications 1995: 0 publications 1996: 1 publication 1997: 5 publications 1998: 11 publications 1999: 7 publications 2000: 9 publications 2001: 11 publications 2002: 11 publications 2003: 18 publications 2004: 30 publications 2005: 29 publications 2006: 21 publications 2007: 37 publications 2008: 40 publications 2009: 41 publications 2010: 53 publications 2011: 38 publications 2012: 20 publications 2013: 32 publications 2014: 29 publications 2015: 30 publications 2016: 27 publications 2017: 38 publications 2018: 37 publications 2019: 57 publications 2020: 65 publications 2021: 63 publications
1961 2021

766 publications in total across all disciplines

View publications per year as a table
Stéphane Udry: publications per year, 1961 to 2021
Year Publications
1961 1
1962 0
1963 0
1964 0
1965 0
1966 0
1967 0
1968 0
1969 0
1970 0
1971 0
1972 0
1973 0
1974 0
1975 0
1976 0
1977 0
1978 0
1979 0
1980 0
1981 0
1982 0
1983 0
1984 0
1985 0
1986 0
1987 1
1988 0
1989 0
1990 1
1991 1
1992 0
1993 2
1994 0
1995 0
1996 1
1997 5
1998 11
1999 7
2000 9
2001 11
2002 11
2003 18
2004 30
2005 29
2006 21
2007 37
2008 40
2009 41
2010 53
2011 38
2012 20
2013 32
2014 29
2015 30
2016 27
2017 38
2018 37
2019 57
2020 65
2021 63
Total 766
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Stéphane Udry publication distribution in Physics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Physics in 2026. The highlighted bar marks where Stéphane Udry sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 70 bars. Horizontal axis: publications, 103–122 to 1,469+. Vertical axis: number of scientists, 0 to 162. Most scientists, 162, have 323–342 publications. The last bar groups every scientist with 1,469 publications or more. The highlighted bar, 843–862 publications, is where this scientist sits. 103–122 publications: 7 scientists 123–142 publications: 10 scientists 143–162 publications: 31 scientists 163–182 publications: 35 scientists 183–202 publications: 53 scientists 203–222 publications: 81 scientists 223–242 publications: 85 scientists 243–262 publications: 112 scientists 263–282 publications: 114 scientists 283–302 publications: 126 scientists 303–322 publications: 136 scientists 323–342 publications: 162 scientists 343–362 publications: 155 scientists 363–382 publications: 156 scientists 383–402 publications: 134 scientists 403–422 publications: 145 scientists 423–442 publications: 147 scientists 443–462 publications: 131 scientists 463–482 publications: 131 scientists 483–502 publications: 116 scientists 503–522 publications: 106 scientists 523–542 publications: 103 scientists 543–562 publications: 87 scientists 563–582 publications: 84 scientists 583–602 publications: 94 scientists 603–622 publications: 70 scientists 623–642 publications: 76 scientists 643–662 publications: 60 scientists 663–682 publications: 54 scientists 683–702 publications: 60 scientists 703–722 publications: 48 scientists 723–742 publications: 64 scientists 743–762 publications: 48 scientists 763–782 publications: 37 scientists 783–802 publications: 43 scientists 803–822 publications: 34 scientists 823–842 publications: 36 scientists 843–862 publications: 32 scientists 863–882 publications: 32 scientists 883–902 publications: 31 scientists 903–922 publications: 25 scientists 923–942 publications: 15 scientists 943–962 publications: 24 scientists 963–982 publications: 13 scientists 983–1,002 publications: 21 scientists 1,003–1,022 publications: 21 scientists 1,023–1,042 publications: 16 scientists 1,043–1,062 publications: 9 scientists 1,063–1,082 publications: 19 scientists 1,083–1,102 publications: 11 scientists 1,103–1,122 publications: 17 scientists 1,123–1,142 publications: 11 scientists 1,143–1,162 publications: 7 scientists 1,163–1,182 publications: 4 scientists 1,183–1,202 publications: 10 scientists 1,203–1,222 publications: 8 scientists 1,223–1,242 publications: 16 scientists 1,243–1,262 publications: 4 scientists 1,263–1,282 publications: 10 scientists 1,283–1,302 publications: 5 scientists 1,303–1,322 publications: 7 scientists 1,323–1,342 publications: 4 scientists 1,343–1,362 publications: 8 scientists 1,363–1,382 publications: 6 scientists 1,383–1,402 publications: 7 scientists 1,403–1,422 publications: 3 scientists 1,423–1,442 publications: 4 scientists 1,443–1,462 publications: 4 scientists 1,463–1,468 publications: 3 scientists 1,469+ publications: 100 scientists
103–122 publications 1,469+

This scientist: 861 publications — 87th percentile

87% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,469 publications or more.

View publications distribution as a table
Number of Physics scientists by publication count, Research.com 2026 ranking edition. Based on 3,678 ranked scientists.
Publications Scientists This scientist
103–122 7
123–142 10
143–162 31
163–182 35
183–202 53
203–222 81
223–242 85
243–262 112
263–282 114
283–302 126
303–322 136
323–342 162
343–362 155
363–382 156
383–402 134
403–422 145
423–442 147
443–462 131
463–482 131
483–502 116
503–522 106
523–542 103
543–562 87
563–582 84
583–602 94
603–622 70
623–642 76
643–662 60
663–682 54
683–702 60
703–722 48
723–742 64
743–762 48
763–782 37
783–802 43
803–822 34
823–842 36
843–862 32 861
863–882 32
883–902 31
903–922 25
923–942 15
943–962 24
963–982 13
983–1,002 21
1,003–1,022 21
1,023–1,042 16
1,043–1,062 9
1,063–1,082 19
1,083–1,102 11
1,103–1,122 17
1,123–1,142 11
1,143–1,162 7
1,163–1,182 4
1,183–1,202 10
1,203–1,222 8
1,223–1,242 16
1,243–1,262 4
1,263–1,282 10
1,283–1,302 5
1,303–1,322 7
1,323–1,342 4
1,343–1,362 8
1,363–1,382 6
1,383–1,402 7
1,403–1,422 3
1,423–1,442 4
1,443–1,462 4
1,463–1,468 3
1,469+ 100
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Stéphane Udry D-index placement in Physics in 2026

The chart shows the D-index (discipline H-index) distribution of Physics scientists ranked by Research.com in 2026. The highlighted bar marks where Stéphane Udry sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 59 bars. Horizontal axis: D-Index, 70–71 to 185+. Vertical axis: number of scientists, 0 to 167. Most scientists, 167, have 80–81 D-Index. The last bar groups every scientist with 185 D-Index or more. The highlighted bar, 144–145 D-Index, is where this scientist sits. 70–71 D-Index: 76 scientists 72–73 D-Index: 110 scientists 74–75 D-Index: 143 scientists 76–77 D-Index: 153 scientists 78–79 D-Index: 144 scientists 80–81 D-Index: 167 scientists 82–83 D-Index: 167 scientists 84–85 D-Index: 166 scientists 86–87 D-Index: 132 scientists 88–89 D-Index: 155 scientists 90–91 D-Index: 134 scientists 92–93 D-Index: 137 scientists 94–95 D-Index: 102 scientists 96–97 D-Index: 112 scientists 98–99 D-Index: 110 scientists 100–101 D-Index: 116 scientists 102–103 D-Index: 97 scientists 104–105 D-Index: 103 scientists 106–107 D-Index: 87 scientists 108–109 D-Index: 90 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 78 scientists 114–115 D-Index: 75 scientists 116–117 D-Index: 67 scientists 118–119 D-Index: 69 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 59 scientists 124–125 D-Index: 53 scientists 126–127 D-Index: 42 scientists 128–129 D-Index: 41 scientists 130–131 D-Index: 33 scientists 132–133 D-Index: 32 scientists 134–135 D-Index: 45 scientists 136–137 D-Index: 19 scientists 138–139 D-Index: 24 scientists 140–141 D-Index: 28 scientists 142–143 D-Index: 31 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 20 scientists 148–149 D-Index: 12 scientists 150–151 D-Index: 16 scientists 152–153 D-Index: 24 scientists 154–155 D-Index: 23 scientists 156–157 D-Index: 15 scientists 158–159 D-Index: 15 scientists 160–161 D-Index: 11 scientists 162–163 D-Index: 17 scientists 164–165 D-Index: 12 scientists 166–167 D-Index: 11 scientists 168–169 D-Index: 9 scientists 170–171 D-Index: 9 scientists 172–173 D-Index: 11 scientists 174–175 D-Index: 4 scientists 176–177 D-Index: 8 scientists 178–179 D-Index: 5 scientists 180–181 D-Index: 3 scientists 182–183 D-Index: 4 scientists 184 D-Index: 4 scientists 185+ D-Index: 99 scientists
70–71 D-Index 185+

This scientist: 145 D-Index — 91st percentile

91% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 185 D-Index or more.

View D-Index distribution as a table
Number of Physics scientists by D-index, Research.com 2026 ranking edition. Based on 3,678 ranked scientists.
D-Index Scientists This scientist
70–71 76
72–73 110
74–75 143
76–77 153
78–79 144
80–81 167
82–83 167
84–85 166
86–87 132
88–89 155
90–91 134
92–93 137
94–95 102
96–97 112
98–99 110
100–101 116
102–103 97
104–105 103
106–107 87
108–109 90
110–111 67
112–113 78
114–115 75
116–117 67
118–119 69
120–121 60
122–123 59
124–125 53
126–127 42
128–129 41
130–131 33
132–133 32
134–135 45
136–137 19
138–139 24
140–141 28
142–143 31
144–145 22 145
146–147 20
148–149 12
150–151 16
152–153 24
154–155 23
156–157 15
158–159 15
160–161 11
162–163 17
164–165 12
166–167 11
168–169 9
170–171 9
172–173 11
174–175 4
176–177 8
178–179 5
180–181 3
182–183 4
184 4
185+ 99
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Research.com Recognitions

  • 2026 - Research.com Physics in Switzerland Leader Award
  • 2025 - Research.com Physics in Switzerland Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Astronomy
  • Exoplanet
  • Planet

His scientific interests lie mostly in Astrophysics, Exoplanet, Planet, Astronomy and Planetary system. In the subject of general Astrophysics, his work in Radial velocity, Stars, Rogue planet and Orbital eccentricity is often linked to Angular diameter distance, thereby combining diverse domains of study. His biological study spans a wide range of topics, including Spectral line, Light curve, Optics and Exosphere.

His work in Planet covers topics such as Orbital period which are related to areas like Rotation period. In general Astronomy study, his work on Hot Jupiter, Brown dwarf, Giant planet and Redshift quantization often relates to the realm of Lyman-alpha forest, thereby connecting several areas of interest. His study in Planetary system is interdisciplinary in nature, drawing from both Metallicity, Terrestrial planet and Stellar rotation.

His most cited work include:

  • Metals in the exosphere of the highly irradiated planet WASP-12b (311 citations)
  • Efficient identification of exoplanetary transit candidates from SuperWASP light curves (308 citations)
  • The Broadband Infrared Emission Spectrum of the Exoplanet HD 189733b (271 citations)

What are the main themes of his work throughout his whole career to date?

His primary areas of investigation include Astrophysics, Planet, Exoplanet, Astronomy and Radial velocity. In most of his Astrophysics studies, his work intersects topics such as Transit. The study incorporates disciplines such as Metallicity, Light curve and Radius in addition to Planet.

His Exoplanet research incorporates themes from Spectral line, Neptune, Minimum mass and Jupiter. His Radial velocity research is multidisciplinary, incorporating perspectives in Super-Earth, Orbital eccentricity, Photometry and Circumstellar habitable zone. His Planetary system research integrates issues from Astrobiology, Terrestrial planet and Stellar rotation.

He most often published in these fields:

  • Astrophysics (82.43%)
  • Planet (70.30%)
  • Exoplanet (50.50%)

What were the highlights of his more recent work (between 2016-2021)?

  • Astrophysics (82.43%)
  • Planet (70.30%)
  • Exoplanet (50.50%)

In recent papers he was focusing on the following fields of study:

Stéphane Udry focuses on Astrophysics, Planet, Exoplanet, Radial velocity and Planetary system. Stéphane Udry interconnects Spectral line and Radius in the investigation of issues within Astrophysics. His Planet study is focused on Astronomy in general.

He has included themes like Brown dwarf, Jupiter, Line, Spectroscopy and Neptune in his Exoplanet study. Stéphane Udry combines subjects such as Spectrograph, Light curve, Orbital elements, Super-Earth and Circumstellar habitable zone with his study of Radial velocity. His Planetary system study integrates concerns from other disciplines, such as Stellar rotation and Terrestrial planet.

Between 2016 and 2021, his most popular works were:

  • Helium in the eroding atmosphere of an exoplanet (174 citations)
  • Atmospheric characterization of Proxima b by coupling the SPHERE high-contrast imager to the ESPRESSO spectrograph (106 citations)
  • The HARPS search for southern extra-solar planets - XLI. A dozen planets around the M dwarfs GJ 3138, GJ 3323, GJ 273, GJ 628, and GJ 3293 (85 citations)

In his most recent research, the most cited papers focused on:

  • Astronomy
  • Astrophysics
  • Solar System

Astrophysics, Planet, Exoplanet, Planetary system and Radial velocity are his primary areas of study. His work on Stars, Hot Jupiter, Photometry and Telescope as part of general Astrophysics research is frequently linked to Context, thereby connecting diverse disciplines of science. His research investigates the connection between Planet and topics such as Orbital elements that intersect with problems in Brown dwarf and Low Mass.

The various areas that Stéphane Udry examines in his Exoplanet study include Spectroscopy, Solar System, Neptune and Exosphere. His study looks at the relationship between Planetary system and fields such as Terrestrial planet, as well as how they intersect with chemical problems. His Radial velocity study frequently draws connections to adjacent fields such as Circumstellar habitable zone.

Best Publications

  • The Geneva-Copenhagen survey of the Solar neighbourhood - Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs

    Birgitta Nordström;Birgitta Nordström;M. Mayor;J. Andersen;J. Holmberg

  • The PLATO 2.0 Mission

    H. Rauer;C. Catala;C. Aerts;T. Appourchaux

  • Transiting Exoplanet Survey Satellite (TESS)

    George R. Ricker;Joshua N. Winn;Roland Vanderspek;David W. Latham

  • No planet for HD 166435

    D. Queloz;G. W. Henry;J. P. Sivan;S. L. Baliunas

  • The PLATO 2.0 mission

    H. Rauer;H. Rauer;C. Catala;C. Aerts;T. Appourchaux

  • A super-Earth transiting a nearby low-mass star

    David Charbonneau;Zachory Kaczmarczyk Berta;Jonathan M Irwin;Christopher J. Burke

  • S B 9 : The ninth catalogue of spectroscopic binary orbits

    Dimitri Pourbaix;Dimitri Pourbaix;Andrei A. Tokovinin;Alen H. Batten;Francis C. Fekel

  • The CORALIE survey for southern extra-solar planets VII. Two short-period Saturnian companions to HD108147 and HD168746

    F. Pepe;M. Mayor;F. Galland;D. Naef

  • The HARPS search for southern extra-solar planets - XVII. Super-Earth and Neptune-mass planets in multiple planet systems HD 47 186 and HD 181 433

    François Bouchy;M. Mayor;C. Lovis;S. Udry

  • The HARPS search for southern extra-solar planets - XXXI. The M-dwarf sample

    Xavier Bonfils;X. Delfosse;Stéphane Udry;T. Forveille

  • Spectroscopic parameters for 451 stars in the HARPS GTO planet search program - Stellar [Fe/H] and the frequency of exo-Neptunes

    S Sousa;N C Santos;M Mayor;S Udry

  • ELODIE metallicity-biased search for transiting Hot Jupiters. II. A very hot Jupiter transiting the bright K star HD 189733

    F. Bouchy;S. Udry;M. Mayor;C. Moutou

  • Harps-N: the new planet hunter at TNG

    Rosario Cosentino;Christophe Lovis;Francesco Pepe;Andrew Collier Cameron

  • An Earth-mass planet orbiting α Centauri B

    Xavier Dumusque;Francesco Alfonso Pepe;Christophe Lovis;Damien Segransan

  • SPHERE: A ‘Planet Finder’ Instrument for the VLT

    Jean-Luc Beuzit;Markus Feldt;Kjetil Dohlen;David Mouillet

  • Local kinematics of K and M giants from CORAVEL/Hipparcos/Tycho-2 data: Revisiting the concept of superclusters

    Benoît Famaey;Alain Jorissen;Xavier Luri;Michel Mayor

  • WASP-12b: The hottest transiting planet yet discovered

    L. Hebb;A. Collier-Cameron;B. Loeillet;D. Pollacco

  • The HARPS search for southern extra-solar planets: XVIII. An Earth-mass planet in the GJ 581 planetary system

    Michel Mayor;X. Bonfils;X. Bonfils;T. Forveille;X. Delfosse

  • Spin-orbit angle measurements for six southern transiting planets New insights into the dynamical origins of hot Jupiters

    A. H. M. J. Triaud;A. Collier Cameron;D. Queloz;D. R. Anderson

  • A giant comet-like cloud of hydrogen escaping the warm Neptune-mass exoplanet GJ 436b

    David Ehrenreich;Vincent Bourrier;Peter J. Wheatley;Alain Lecavelier des Etangs

Frequent Co-Authors

Michel Mayor
Michel Mayor University of Geneva
Nuno C. Santos
Nuno C. Santos University of Porto
Damien Ségransan
Damien Ségransan University of Geneva
Didier Queloz
Didier Queloz University of Cambridge
Francesco Pepe
Francesco Pepe University of Geneva
Michaël Gillon
Michaël Gillon University of Liège
Guillaume Hébrard
Guillaume Hébrard Institut d'Astrophysique de Paris
David Ehrenreich
David Ehrenreich University of Geneva
Claire Moutou
Claire Moutou Centre national de la recherche scientifique, CNRS
Frederic Pont
Frederic Pont University of Exeter

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