John Gizis

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http://www.physics.udel.edu/contact/people/gizis.php

Articles in Scholarly Journals [Incomplete List]

  1. A Chandra X-ray detection of the L dwarf binary Kelu-1
    Astronomy and Astrophysics, vol. 471, no. 3, pp. L63–L66, 2007
  2. Erratum: "Identification of New M Dwarfs in the Solar Neighborhood" ([URL ADDRESS="/cgi-bin/resolve?2006AJ....132..866R" STATUS="OKAY"]AJ, 132, 866 [2006][/URL])
    The Astronomical Journal, vol. 133, no. 3, p. 1208, 2007
  3. Infrared Observations of a Mid-L Dwarf with Strong Ha Emission
    The Astrophysical Journal, vol. 659, no. 1, pp. 675–679, 2007
  4. Characterizing the Disk around the TW Hydrae Association Brown Dwarf 2MASSW J1207334-393254
    The Astrophysical Journal, vol. 661, no. 1, pp. 354–360, 2007
  5. 2MASSW J0746425+200322: Is the Secondary a Star or Brown Dwarf?
    The Astronomical Journal, vol. 131, no. 1, pp. 638–639, 2006
  6. The Two Micron All Sky Survey (2MASS)
    The Astronomical Journal, vol. 131, no. 2, pp. 1163–1183, 2006
  7. Spitzer Observations of Two TW Hydrae Association Brown Dwarfs
    The Astrophysical Journal, vol. 639, no. 2, pp. L79–L82, 2006
  8. RI Photometry of 2MASS-selected Late M and L Dwarfs
    Publications of the Astronomical Society of the Pacific, vol. 118, no. 843, pp. 659–670, 2006
  9. Erratum: "Spectroscopic Survey of M Dwarfs within 100 Parsecs of the Sun" ([URL ADDRESS="/cgi-bin/resolve?2005AJ....130.1871B" STATUS="OKAY"]AJ, 130, 1871 [2005][/URL])
    The Astronomical Journal, vol. 131, no. 6, pp. 3136–3138, 2006
  10. Identification of New M Dwarfs in the Solar Neighborhood
    The Astronomical Journal, vol. 132, no. 2, pp. 866–872, 2006
  11. Spitzer Observations of Nearby M Dwarfs
    The Astrophysical Journal, vol. 650, no. 2, pp. 1133–1139, 2006
  12. Halo Stars near the Hydrogen?burning Limit: The M/L Subdwarf Transition1
    The Astronomical Journal, vol. 132, no. 6, pp. 2372–2375, 2006
  13. The Magnetic Properties of an L Dwarf Derived from Simultaneous Radio, X-Ray, and Ha Observations
    The Astrophysical Journal, vol. 627, no. 2, pp. 960–973, 2005
  14. Probing the LHS Catalog. II. Faint Proper-Motion Stars
    Publications of the Astronomical Society of the Pacific, vol. 117, no. 833, pp. 676–698, 2005
  15. A Deep Look at the T-Type Brown Dwarf Binary e Indi Bab with Chandra and the Australia Telescope Compact Array
    The Astrophysical Journal, vol. 625, no. 1, pp. L63–L66, 2005
  16. Spectroscopic Survey of M Dwarfs within 100 Parsecs of the Sun
    The Astronomical Journal, vol. 130, no. 4, pp. 1871–1879, 2005
  17. First Ultraviolet Spectrum of a Brown Dwarf: Evidence for H2 Fluorescence and Accretion
    The Astrophysical Journal, vol. 630, no. 1, pp. L89–L91, 2005
  18. A Chandra Observation of a TW Hydrae Association Brown Dwarf
    The Astrophysical Journal, vol. 608, no. 2, pp. L113–L115, 2004
  19. A Flaring L5 Dwarf: The Nature of Ha Emission in Very Low Mass (Sub)Stellar Objects
    The Astronomical Journal, vol. 125, no. 1, pp. 343–347, 2003
  20. Binarity in Brown Dwarfs: T Dwarf Binaries Discovered with the Hubble Space Telescope Wide Field Planetary Camera 2
    The Astrophysical Journal, vol. 586, no. 1, pp. 512–526, 2003
  21. Hubble Space Telescope Observations of Binary Very Low Mass Stars and Brown Dwarfs
    The Astronomical Journal, vol. 125, no. 6, pp. 3302–3310, 2003
  22. The First Substellar Subdwarf? Discovery of a Metal-poor L Dwarf with Halo Kinematics
    The Astrophysical Journal, vol. 592, no. 2, pp. 1186–1192, 2003
  23. The Spectra of T Dwarfs. I. Near-Infrared Data and Spectral Classification
    The Astrophysical Journal, vol. 564, no. 1, pp. 421–451, 2002
  24. Effective Temperatures of Late L Dwarfs and the Onset of Methane Signatures
    The Astrophysical Journal, vol. 566, no. 1, pp. 435–441, 2002
  25. A Search for Variability in the Active T Dwarf 2MASS 1237+6526
    The Astronomical Journal, vol. 123, no. 5, pp. 2744–2753, 2002
  26. The Palomar/MSU Nearby Star Spectroscopic Survey. III. Chromospheric Activity, M Dwarf Ages, and the Local Star Formation History
    The Astronomical Journal, vol. 123, no. 6, pp. 3356–3369, 2002
  27. High-Resolution Spectroscopy of Ultracool M Dwarfs
    The Astronomical Journal, vol. 124, no. 1, pp. 519–540, 2002
  28. Brown Dwarfs and the TW Hydrae Association
    The Astrophysical Journal, vol. 575, no. 1, pp. 484–492, 2002
  29. Astrometry and Photometry for Cool Dwarfs and Brown Dwarfs
    The Astronomical Journal, vol. 124, no. 2, pp. 1170–1189, 2002
  30. The Palomar/MSU Nearby Star Spectroscopic Survey. IV. The Luminosity Function in the Solar Neighborhood and M Dwarf Kinematics
    The Astronomical Journal, vol. 124, no. 5, pp. 2721–2738, 2002
  31. ASTRONOMY: Enhanced: Brown Dwarfs
    Science, vol. 294, no. 5543, pp. 801–802, 2001
  32. A Search for L Dwarf Binary Systems
    The Astronomical Journal, vol. 121, no. 1, pp. 489–502, 2001
  33. CorMASS: A Compact and Efficient Near-Infrared Spectrograph for Studying Low-Mass Objects
    Publications of the Astronomical Society of the Pacific, vol. 113, no. 780, pp. 227–239, 2001
  34. Near-Infrared Spectral Classification of Late M and L Dwarfs
    The Astronomical Journal, vol. 121, no. 3, pp. 1710–1721, 2001
  35. A 2MASS L Dwarf Companion to the Nearby K Dwarf GJ 1048
    The Astronomical Journal, vol. 121, no. 4, pp. 2185–2188, 2001
  36. Substellar Companions to Main-Sequence Stars: No Brown Dwarf Desert at Wide Separations
    The Astrophysical Journal, vol. 551, no. 2, pp. L163–L166, 2001
  37. Brown Dwarf Companions to G-Type Stars. I. Gliese 417B and Gliese 584C
    The Astronomical Journal, vol. 121, no. 6, pp. 3235–3253, 2001
  38. Analysis of Keck HIRES Spectra of Early L-Type Dwarfs
    The Astrophysical Journal, vol. 555, no. 1, pp. 368–379, 2001
  39. Three Newly Discovered M-Dwarf Companions of Solar Neighborhood Stars
    Publications of the Astronomical Society of the Pacific, vol. 113, no. 785, pp. 814–820, 2001
  40. Three Wide-Separation L Dwarf Companions from the Two Micron All Sky Survey: Gliese 337C, Gliese 618.1B, and HD 89744B
    The Astronomical Journal, vol. 122, no. 4, pp. 1989–2000, 2001
  41. Discovery of a Brown Dwarf Companion to Gliese 570ABC: A 2MASS T Dwarf Significantly Cooler than Gliese 229B
    The Astrophysical Journal, vol. 531, no. 1, pp. L57–L60, 2000
  42. An Improved Red Spectrum of the Methane or T Dwarf SDSS 1624+0029: The Role of the Alkali Metals
    The Astrophysical Journal, vol. 533, no. 2, pp. L155–L158, 2000
  43. [ITAL]Hubble Space Telescope[/ITAL] Observations of M Subdwarfs
    Publications of the Astronomical Society of the Pacific, vol. 112, no. 771, pp. 610–613, 2000
  44. 2MASS Discoveries of Cool, Dust-enshrouded Carbon Stars out of the Galactic Plane
    Publications of the Astronomical Society of the Pacific, vol. 112, no. 776, pp. 1315–1319, 2000
  45. A Global Photometric Analysis of 2MASS Calibration Data
    The Astronomical Journal, vol. 120, no. 6, pp. 3340–3350, 2000
  46. Four Nearby L Dwarfs
    The Astronomical Journal, vol. 119, no. 1, pp. 369–377, 2000
  47. Detection of Ha Emission in a Methane (T Type) Brown Dwarf
    The Astronomical Journal, vol. 120, no. 1, pp. 473–478, 2000
  48. 67 Additional L Dwarfs Discovered by the Two Micron All Sky Survey
    The Astronomical Journal, vol. 120, no. 1, pp. 447–472, 2000
  49. New Neighbors from 2MASS: Activity and Kinematics at the Bottom of the Main Sequence
    The Astronomical Journal, vol. 120, no. 2, pp. 1085–1099, 2000
  50. Discovery of a Bright Field Methane (T-Type) Brown Dwarf by 2MASS
    The Astronomical Journal, vol. 120, no. 2, pp. 1100–1105, 2000
  51. Two nearby M dwarf binaries from the Two Micron All Sky Survey
    Monthly Notices of the Royal Astronomical Society, vol. 311, no. 2, pp. 385–388, 2000
  52. M Subdwarfs: The Population II Luminosity Function
    The Astronomical Journal, vol. 117, no. 1, pp. 508–520, 1999
  53. A 2MASS Survey for Brown Dwarfs toward the Hyades
    The Astronomical Journal, vol. 118, no. 2, pp. 997–1004, 1999
  54. Dwarfs Cooler than “M”: The Definition of Spectral Type “L” Using Discoveries from the 2 Micron All-Sky Survey (2MASS)
    The Astrophysical Journal, vol. 519, no. 2, pp. 802–833, 1999
  55. L Dwarfs and the Substellar Mass Function
    The Astrophysical Journal, vol. 521, no. 2, pp. 613–629, 1999
  56. Discovery of Four Field Methane (T-Type) Dwarfs with the Two Micron All-Sky Survey
    The Astrophysical Journal, vol. 522, no. 1, pp. L65–L68, 1999
  57. BRI 0021-0214: Another Surprise at the Bottom of the Main Sequence
    The Astrophysical Journal, vol. 527, no. 2, pp. L105–L107, 1999
  58. The Lower Main Sequence and the Orbital Period Distribution of Cataclysmic Variable Stars
    The Astrophysical Journal, vol. 496, no. 1, pp. 352–363, 1998
  59. High Chromospheric Activity in M Subdwarfs
    The Astronomical Journal, vol. 115, no. 5, pp. 2053–2058, 1998
  60. The Distance to NGC 6397 by M-Subdwarf Main-Sequence Fitting
    The Astronomical Journal, vol. 116, no. 6, pp. 2929–2935, 1998
  61. M-Subdwarfs: Spectroscopic Classification and the Metallicity Scale
    The Astronomical Journal, vol. 113, p. 806, 1997
  62. Low-Mass Binaries and the Stellar Luminosity Function
    The Astronomical Journal, vol. 113, p. 2246, 1997
  63. Low-Mass Binaries in the Hyades: A Scarcity of Brown Dwarfs
    The Astronomical Journal, vol. 114, p. 1992, 1997
  64. Faint M-Dwarfs and the Structure of the Galactic Disk
    Publications of the Astronomical Society of the Pacific, vol. 109, p. 559, 1997
  65. Probing the LHS Catalog. I. New Nearby Stars and the Coolest Subdwarf
    Publications of the Astronomical Society of the Pacific, vol. 109, p. 849, 1997
  66. M Subdwarf Secondaries: A Test of the Metallicity Scale
    Publications of the Astronomical Society of the Pacific, vol. 109, p. 1233, 1997
  67. GJ 1230: A Nearby Triple System
    The Astronomical Journal, vol. 111, p. 365, 1996
  68. The Palomar/MSU Nearby Star Spectroscopic Survey.II.The Southern M Dwarfs and Investigation of Magnetic Activity
    The Astronomical Journal, vol. 112, p. 2799, 1996
  69. Low-Mass Binaries in the Hyades
    The Astronomical Journal, vol. 110, p. 1248, 1995
  70. The Palomar/MSU Nearby-Star Spectroscopic Survey. I. The Northern M Dwarfs -Bandstrengths and Kinematics
    The Astronomical Journal, vol. 110, p. 1838, 1995
  71. Trigonometric Parallaxes and the HR Diagram at the Bottom of the Main Sequence
    The Astronomical Journal, vol. 110, p. 3014, 1995