Gibor Basri

born: May 3, 1951.

place: Ft. Collins, Colorado

pre-doctoral insitutions: B.Sc. (Physics) 1973 Stanford University;

doctoral institution: Ph.D. in astrophysics (1979) University of Colorado

Specialization: Astrophysics; Thesis: Supergiant Chromospheres

current employment. Full Professor Astronomy University of California at Berkeley


In 1979, Gibor Basri received his Ph.D. in astrophysics at the University of Colorado at Boulder, not far from his hometown in Fort Collins. He has been at the University of California at Berkeley since 1982. One of the more inventive classes he has taught there in recent years is called "The Science in Science Fiction." With a long list of technical publications that would be the envy of any professor in his field, Basri is probably best know for his research on substellar objects known as "brown dwarfs" or "failed stars" which emit so little light they were not detectable until 1995 when using the 10-meter Keck Telescope, the team he headed helped to confirm their existence. Basri published an article on the discovery of brown dwarfs in the April 2000 issue of the prestigious journal Scientific American.


Publications in Refereed Journals

  1. "High Resolution Vidicon Spectrophotometry. I. Variable Mass Loss from Arcturus and the Hypothesis of Giant Convective Elements", 1977, Ap.J.211, 453, Chiu, Adams, Basri, Linsky, Maran, Hobbs.
  2. "Stellar Model Chromospheres. VII. Capella (G5III+), Pollux (K0III), and Aldebaran (K5III)", 1978, Ap.J. 220, 962, Kelch, Linsky, Basri, Chiu, Chang, Maran, Furenlid.
  3. "IUE Observations of Cool Stars: alpha Aur, HR 1099, lambda And, and epsilon Eri", Nature 275, 389, 1978, Linsky, Ayres, Basri, Morrison, et al.
  4. "Lyman-alpha Rocket Spectra and Models of the Quiet and Active Solar Chromosphere Based on Partial Redistribution Diagnostics", Ap.J.230, 924, 1979, Basri, Linsky, Bartoe, Brueckner, VanHoosier.
  5. "Outer Atmospheres of Cool Stars. II. Mg II Flux Profiles and Chromospheric Radiative Loss Rates", Ap.J. 234, 1023, 1979, Basri & Linsky.
  6. "Outer Atmospheres of Cool Stars. III. Cool Stellar Winds", 1980, Ap.J.235, 519, Haisch, Linsky, Basri.
  7. "Formation of Chromospheric Resonance Line Profiles in Supergiants" , 1980, Ap.J. 242, 1133, Basri.
  8. "Outer Atmospheres of Cool Stars. VII. High Resolution, Absolute Flux Profiles of the Mg II h and k Lines in Stars of Spectral Type F8 to M5", 1980, Ap.J. Supp. 44, 383, Stencel, Mullan, Linsky, Basri, Worden.
  9. "Outer Atmospheres of Cool Stars. VIII. IUE Observations and Chromospheric Models for the Supergiant Stars beta Draconis, epsilon Geminorum, and alpha Orionis", 1981, Ap.J. 251, 162, Basri, Linsky, Eriksson.
  10. "Outer Atmospheres of Cool Stars. XII. High Dispersion IUE Spectra of Five Late-Type Dwarfs and Giants", Ap.J. 256, 550, 1982, Ayres, Linsky, Basri, Landsman, Henry, Moos, Stencel.
  11. "The Enigmatic H-alpha Line of FK Comae: Last Stages of a Coalesing Binary"", 1982, Ap.J. 260, 735, Walter & Basri.
  12. 12."The Soft X-ray Spectrum of Sirius B: The Photospheric Hypothesis", 1982, Ap.J. 261, L81, Martin, Basri, Lampton, Kahn.
  13. 13."Extreme Ultraviolet Spectrophotometry of the Hot White Dwarf HZ43: Detection of He II in the Stellar Atmosphere", 1982, Ap.J. 262, 717, Malina, Bowyer, Basri.
  14. 14."Ultraviolet and X-ray Detection of the 56 Peg System (K0IIp+WD): Evidence for Accretion of a Cool Stellar Wind onto a White Dwarf", 1982, Ap.J.263, 269, Schindler, Stencel, Linsky, Basri, Helfand.
  15. 15."First Observations of Extra-solar Coronal Structure: Activity in the AR Lacertae System", 1982, Ap.J. 267, 665, Walter, Gibson, Basri.
  16. 16."The Chromospheric Hypothesis for T Tauri Stars", 1984, Ap.J.277, 725, Calvet, Basri, Kuhi.
  17. 17."An Analysis of Scattered Light in Low Dispersion IUE Spectra", 1984, Astr. & Ap. 144, 161, Basri, Clarke, Haisch.
  18. 18."A Study of GOV-G5V Solar-type Stars with IUE Spectra", 1985, Ap.J. Suppl. 58, 179, Haisch & Basri.
  19. 19."Simultaneous Observations of CaII and MgII Emission in T Tauri Stars", 1985, Ap.J. 293, 575, Calvet, Basri, Imhoff, Giampapa.
  20. 20."Stellar Activity in Synchronized Binaries I. Dependence on Rotation", 1985, Ap.J. 298, 761, Basri, Laurent, Walter.
  21. 21."Stellar Activity in Synchronized Binaries: II. A Correlation Analysis, with Single Stars", 1987, Ap.J. 316, 377, Basri.
  22. 22."The Atmospheres of T Tauri Stars. I. Calibrated High-Resolution Observations of Moderately Active Stars", 1987, Ap. J. 318, 823, Finkenzeller & Basri.
  23. 23."Accretion Disks Around T Tauri Stars", 1988, Ap. J. 330, 350, Bertout, Basri, Bouvier.
  24. 24."Physical Realism and the Analysis of Stellar Magnetic Fields", 1988, Ap.J. 330, 274, Basri & Marcy.
  25. 25."Observations of the Type II Supernova 1986I in M99", 1989, A.J.97, 186, 12th in list of 24 authors, C.R. Pennypacker 1st.
  26. 26."Accretion Disks Around T Tauri Stars. II. Balmer Emission", 1989, Ap.J.341, 340, Basri & Bertout.
  27. 27."Physical Realism and the Analysis of Stellar Magnetic Fields. II. K Dwarfs", 1989, Ap.J. 345, 414, Marcy & Basri.
  28. 28."Photospheric Activity on Main Sequence Stars", 1989, P.A.S.P.101, 528, Basri, Wilcots, Stout.
  29. 29."Physical Realism in the Analysis of Stellar Magnetic Fields. III. Flux Tubes and Multi-component Atmospheres", 1990, Ap. J. 360, 650, Basri, Marcy, Valenti.
  30. 30."Hamilton Echelle Spectra of Young Stars I. Optical Veiling", 1990, Ap.J. 363, 654, Basri & Batalha.
  31. 31."The Young Cluster in NGC 1275: H-alpha Linewidth and Star-Formation Properties", 1990, A.J. 100, 1805, Shields, Fillipenko, Basri.
  32. 32."The Temperature Scale of Hot DA White Dwarfs: Temperatures from Far-Ultraviolet Continuum Fluxes", 1990, Ap.J. 359, 483, Finley, Basri, Bowyer.
  33. 33."The Lithium Resonance Line in T Tauri Stars", 1991, Astr. & Ap. 252, 625, Basri, Martín, Bertout.
  34. 34."Limits on the Magnetic Flux on Pre-main Sequence Stars", 1992, Ap. J. 390, 622, Basri, Marcy, Valenti.
  35. 35."CCD Photometry of T Tauri Stars", 1992, P.A.S.P. 104, 1144, Richter, Basri, Perlmutter, Pennypacker.
  36. 36."The Atmospheres of T Tauri Stars. II. Chromospheric Line Fluxes and Veiling", 1993, Ap.J. 412, 363, Batalha & Basri.
  37. 37."A Synoptic Study of H-alpha Line Profile Variability in the T Tauri Star SU Aurigae", 1993, Ap. J. Suppl. 89, 321, Giampapa, Basri, Johns, Imhoff.
  38. 38."T Tauri Stars in Blue", 1993, A.J. 106 2024, Valenti, Basri, Johns.
  39. 39."A Far Ultraviolet Flare on a Pleiades G Dwarf", 1994, Ap. J.420, L33, Ayres, Stauffer, Simon, Stern, Antiochos, Basri, Bookbinder, Brown, Doschek, Linsky, Ramsey, Walter.
  40. 40."Zeeman Enhancement of Lines in Extremely Active K Dwarfs", 1994, Ap.J.431, 844, Basri & Marcy.
  41. 41."A Search for Lithium in Pleiades Brown Dwarf Candidates Using the Keck HIRES Echelle", 1994, Ap.J. 428, L57, Marcy, Basri, Graham.
  42. 42."Infrared Zeeman Analysis of Epsilon Eridani", 1995, Ap.J.439, 939, Valenti, Marcy, Basri.
  43. 43."A Surprise at the Bottom of the Main Sequence - Rapid rotation and no H-alpha Emission", 1995, A.J. 109, 762, Basri & Marcy.
  44. 44."Hamilton Echelle Spectra of Young Stars II: Time Series Analysis of H-alpha Variations", 1995, A.J. 109, 2800, Johns, Basri.
  45. 45."The Line Profile Variability of SU Aur", 1995, Ap.J. 449, 341, Johns & Basri.
  46. 46."Lithium in Brown Dwarf Candidates: The Mass and Age of the Faintest Pleiades Stars", 1996, Ap.J. 458, 600, Basri, Marcy, Graham.
  47. 47."The Narrow Emission Lines of T Tauri Stars", 1996, Ap.J. Supp.103, 211, Batalha, Stout-Batalha, Basri, Terra.
  48. 48."Night-Sky High-Resolution Spectral Atlas of OH and O2 Emission Lines for Echelle Spectrogram Wavelength Calibration", 1996, P.A.S.P.108, 277, Osterbrock, Fulbright, Martel, Keane, Trager, Basri.
  49. 49."Dynamic Processes in Be Star Atmospheres. IV. Common Attributes of Line Profile `Dimples" ", 1996, Ap.J. 469, 336, Smith, Plett, Johns, Basri, Thomson, Aufdenberg.
  50. 50."Pressure Broadening in VB10: High Resolution Spectroscopy with Keck", 1996, M.N.R.A.S. 283, 821, Schweitzer, Hauschildt, Allard, Basri.
  51. 51."Brown Dwarfs in the Pleiades Cluster Confirmed by the Lithium Test", 1996, Ap.J. 469, L53, Rebolo, Martín , Basri, Marcy, Zapatero-Osorio.
  52. 52."The Spectral Variability of the T Tauri Star DF Tau", 1997, Ap. J. 474, 433, Johns-Krull & Basri.
  53. 53."Lithium in Very Low-Mass Stars in the Pleiades" 1997, A.J.113, 296, Oppenheimer, Basri, Nakajima, Kulkarni.
  54. 54."Dynamic Processes in Be Star Atmospheres. V. Helium Line Emissions from the Outer Atmosphere of lambda Eridani", 1997, Ap.J.481, 467, Smith, Cohen, Hubeny, Plett, Basri, Johns-Krull, MacFarlane, Hirata.
  55. 55."The Classical T Tauri Spectroscopic Binary DQ Tau.I. Orbital Elements and Light Curves", 1997, A.J. 113, 1841, Mathieu, Stassun, Basri, Jensen, Johns-Krull, Valenti, Hartmann.
  56. 56."Hamilton Echelle Spectroscopy of the 6 March 1993 Solar Flare", 1997, Ap.J.Supp. 112, 221,Johns-Krull, Hawley, Basri, Valenti.
  57. 57."The Classical T Tauri Spectroscopic Binary DQ Tau.II. Emission Line Variations with Orbital Phase", 1997, A.J. 114, 781, Basri, Johns-Krull, Mathieu.
  58. 58."The Temperature Scale and Mass Distribution of Hot DA White Dwarfs", 1997, Ap.J. 488, 375, Finley, Koester, Basri.
  59. 59."Keck HIRES Spectra of the Brown Dwarf DENIS-P J1228.2-1547", 1997, Astr. & Ap. 327, L29, Martín, Basri, Delfosse, Forveille.
  60. 60."New Brown Dwarfs in the Pleiades Cluster", 1997, Ap.J. 491, L81, Zapatero-Osorio, Rebolo, Martín, Basri, Magazzù.
  61. 61."A New Pleiades Member at the Lithium Substellar Boundary", 1998, Ap.J.499, L61, Martín, Basri, Gallegos, Rebolo, Zapatero-Osorio, Bejar.
  62. 62."The First L-type Brown Dwarf in the Pleiades", 1998, Ap.J.507, L41, Martín, Basri, Zapatero-Osorio, Rebolo, García-López
  63. 63."Discovery of a Very Low-Mass Binary with HST/NICMOS", 1998, Ap.J.509, L113, Martín, Basri, Brandner, Bouvier, Zapatero-Osorio, Rebolo, Stauffer, Allard, Baraffe, Hodgkin.
  64. 64."The Mass and Age of Very Low Mass Members of the Open Cluster alpha Persei", 1999, Ap.J. 510, 266, Basri & Martín.
  65. 65."A Search for Companions to Nearby Brown Dwarfs: The Binary DENIS-P J1228.2-1547", 1999, Science 283, 1718, Martín, Brandner, Basri.
  66. 66."The Lithium Test in Young Brown Dwarf Candidates", 1999, A.J.118, 1005, Martín, Delfosse, Basri, Goldman, Forveille, Zapatero-Osorio.
  67. 67."Evidence of a Supernova Origin for the Black-Hole in GRO J1655-40 (Nova Scorpii 1994)", 1999, Nature 401, 142, Israelian, Rebolo, Basri, Casares, Martín.
  68. 68."An L-type Substellar Object in Orion: Reaching the Mass Boundary Between Brown Dwarfs and Giant Planets", 1999, Ap.J. 524, 115, Zapatero-Osorio, Béjar, Rebolo, Martín, Basri.
  69. 69."PPl15: The First Brown Dwarf Spectroscopic Binary", 1999, A.J.118, 2460, Basri & Martín.
  70. 70."Spectroscopic Classification of Late-M and L Field Dwarfs", 1999, A.J.118, 2466, Martín, Basri, Zapatero-Osorio.
  71. 71."Accretion-induced Lithium Line Enhancements in Classical T Tauri Stars: RW Aurigae", 2000, Ap.J. 532, 474, Stout-Batalha, Batalha, Basri.
  72. 72."An Effective Temperature Scale for the Late M and L Dwarfs, from Resonance Absorption Lines of Cs I and Rb I", 2000, Ap.J. 538, 363, Basri, Mohanty, Allard, Hauschildt, Delfosse, Martín, Forveille, Goldman.
  73. 73."Profiles of Strong Permitted Lines in Classical T Tauri Stars", 2000, A.J. 119, 1881, Alencar & Basri.
  74. 74."A Survey for Low-Mass Stars and Brown Dwarfs in the Upper Sco OB Association", 2000, A.J. 120, 479, Ardila, Martín, Basri.
  75. 75."Chandra Detection of an X-Ray Flare from the Brown Dwarf LP 944-20", 2000, Ap.J. 538, L141, Rutledge, Basri, Martín, Bildsten.
  76. 76."Ultraviolet Spectral Variability in the Classical T Tauri Star BP Tau", 2000, Ap.J. 539, 834, Ardila & Basri.
  77. 77."Membership and Muliplicity Among Very Low Mass Stars and Brown Dwarfs in the Pleiades Cluster", 2000, Ap.J. 543, 299, Martín, Brandner, Bouvier, Luhman, Stauffer, Basri, Zapatero-Osorio, Barrado.
  78. 78."Oxygen in the Very Early Galaxy", 2000, Ap.J., 551, 833, Israelian, Rebolo, Garcia-Lopez, Bonifacio, Molaro, Basri, Shchukina.
  79. 79."The Spectral Variability of the Classical T Tauri Star DR Tau'', 2001, A.J., 122, 3335, Alencar, Johns-Krull, Basri.
  80. 80."Observations of T-Tauri Stars Using HST-GHRS: I. Far Ultraviolet Emission Lines'', 2002, Ap.J., 566, 1100, Ardila, Basri, Walter, Valenti, Johns-Krull.
  81. 81."Observations of T-Tauri Stars Using HST-GHRS: II. MgII and Optical Lines'', 2002, Ap.J., 567, 1013, Ardila, Basri, Walter, Valenti, Johns-Krull.
  82. 82."Activity in very cool stars: Magnetic dissipation in late M and L dwarf atmospheres'', 2002, Ap.J., 571, 469, Mohanty, Basri, Shu, Allard, Chabrier.
  83. 83. "Probing Disk Accretion in Young Brown Dwarfs", 2002, Ap.J.,578, L141, Jayawardana, Mohanty, Basri.
  84. 84. "Lithium Abundances in Wide Binaries with Solar-Type Twin Components", 2002, Ap.J., 579, 437, Martín, Basri, Pavlenko, Yura.
  85. 85. "Low Mass Stars and Brown Dwarfs in Taurus-Auriga", 2003, Ap.J.,582, 1109, White, Basri.
  86. 86. "Rotation and Activity in Mid-M to L Field Dwarfs", 2003, Ap.J.,583, 451, Mohanty, Basri.
  87. 87. "Evidence for a T Tauri Phase in Young Brown Dwarfs", 2003, Ap.J., 592, 282, Jayawardhana, Mohanty, Basri.
  88. 88. "Multiplicity of Nearby Free-Floating Ultracool Dwarfs: A Hubble Space Telescope WFPC2 Search for Companions", 2003, A.J., 126, 1526, Bouy, Brandner, Martín, Delfosse, Allard, Basri.
  89. 89. "Eclipses by circumstellar material in the T Tauri star AA Tau. II. Evidence for non-stationary magnetospheric accretion", 2003, A&A, 409, 169, Bouvier, Grankin, Alencar, Dougados, Fernández, Basri, Batalha, Guenther, et al.
  90. 90. "Oxygen and magnesium abundance in the ultra-metal-poor giants CS 22949-037 and CS 29498-043: Challenges in models of atmospheres", 2004, A&A, 419, 1095, Isaelian, Shchukina, Rebolo, Basri, González Hernández, Kajino.
  91. 91. "X-Ray Properties of Pre-Main-Sequence Stars in the Orion Nebula Cluster with Known Rotation Periods", 2004, A.J., 127, 3537, Stassun, Ardila, Barsony, Basri, Mathieu.
  92.  92. "Measuring Fundamental Parameters of Substellar Objects. I. Surface Gravities", 2004, Ap.J., 609, 854, Mohanty, Basri, Jayawardhana, Allard, Hauschildt, Ardila.
  93. 93. "Measuring Fundamental Parameters of Substellar Objects. II. Masses and Radii", 2004, Ap.J.609, 885, Mohanty, Jayawardhana, Basri.
  94. 94. "First Determination of the Dynamical Mass of a Binary L Dwarf", 2004,  A&A, 423, 341, Bouy,Duchêne, Köhler, Brandner, Bouvier,Martín, Ghez, Delfosse, Forveille, Allard, Baraffe, Basri, Close, McCabe.



references: Fikes: From Banneker to Best: Some Stellar Careers In Astronomy and Astrophysics; Dr. Basri's web site;


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