Seth Redfield

WELCOME! to the web site of Seth Redfield at Wesleyan University in Middletown CT, where I am an Assistant Professor in the Astronomy Department. These pages outline my research interests, which focus on the three-dimensional structure of the Local Interstellar Medium (LISM) and its influence on the heliosphere and astrospheres, circumstellar and planetary systems around nearby stars, stellar and exoplanetary atmospheres, and high-resolution spectroscopy.

Three-Dimensional Morphology of the Local Interstellar Medium
  • Modeling the structure of the Local Interstellar Cloud (LIC)
  • LISM absorption lines in FUV, UV, and optical spectra of nearby stars
  • Physical properties of the LISM: morphology, shape, extent, kinematics, ionization, temperature, turbulence, origins, evolution, etc....
  • Relationship between the LISM and our heliosphere and other astrospheres: and ultimately their impact on planetary atmospheric processes
    Extrasolar Planets
  • Magnetic Interactions
  • Exoplanetary Atmospheric Absorption
    Circumstellar Disks
  • Debris Disks
  • Time-variable Inner Gas Disk Absorption
    Stellar Atmospheres
  • FUV and UV high-resolution stellar spectroscopy
  • Super-rotational broadening of coronal and transition region lines
  • Broad and narrow component fitting to transition region lines
  • Sodium Absorption from the Exoplanetary Atmosphere of HD189733b Detected In the Optical Transmission Spectrum,
    S. Redfield, M. Endl, W.D. Cochran, & L. Koesterke, ApJL, 673, L87 (2008)
    The Structure of the Local Interstellar Medium IV: Dynamics, Morphology, Physical Properties, and Implications of Cloud-Cloud Interactions,
    S. Redfield, & J.L. Linsky, ApJ, 673, in press (2008)
    Gas Phase Absorption by the Edge-on Debris Disk Surrounding HD32297,
    S. Redfield, ApJL, 656, L97 (2007)
    The Local Interstellar Medium,
    S. Redfield, in ASP Conf. Ser. 352, New Horizons in Astronomy, 79 (2006)
    The Structure of the Local Interstellar Medium. III. Temperature and Turbulence,
    S. Redfield, & J.L. Linsky, ApJ, 613, 1004 (2004)
    A Far Ultraviolet Spectroscopic Explorer Survey of Coronal Forbidden Lines in Late-Type Stars,
    S. Redfield, T.R. Ayres, J.L. Linsky, T.B. Ake, A.K. Dupree, R.D. Robinson, & P.R. Young, ApJ, 585, 993 (2003)
    George Antheil's Second Sonata: The Airplane,
    S. Redfield, Sonus: A Journal of Investigations into Global Musical Possibilities, v. 22, no. 2, p. 56 (2002)
    The Three-dimensional Structure of the Warm Local Interstellar Medium. II. The Colorado Model of the Local Interstellar Cloud,
    S. Redfield, & J.L. Linsky, ApJ, 534, 825 (2000)
    A full list of my published papers and conference proceedings.
    Popular articles that describe my work:
  • Travels with Sol,
               R. Johnson, StarDate, v. 32, p. 4 (Mar/Apr 2004)
  • Mapping the Local Interstellar Cloud,
               Sky & Telescope, v. 99, no. 4, p. 17 (Apr 2000)
  • Mapping the Interstellar Cloud We Live In,
               B. Schwarzschild, Physics Today, v. 53, no. 1, p. 17 (Jan 2000)
  • The LIC Model Column Density Calculator , a web-based tool to predict the
    H I column density associated with the LIC in any direction (Redfield & Linsky 2000).

    The LISM Kinematic Calculator , a web-based tool to predict the radial and
    transverse velocities of LISM clouds for any direction. Also calculates which LISM clouds are traversed by any given sight line (Redfield & Linsky 2008).
  • Animation of an orbit around the Local Interstellar Cloud.
  • Visualizations of the Local Interstellar Cloud: Semi-opaque and Opaque
  • ASTR 1110: General Astronomy - Solar System (Univ. of Colorado, Summer 2002)
    Deceiphering Stars - Teacher Development Workshop (McDonald Obs., 2006)
    Between the Stars - Teacher Development Workshop (McDonald Obs., 2007)

    Seth Redfield (sredfield _at_
    Astronomy Department
    Van Vleck Observatory
    Wesleyan University
    Middletown, CT 06459

    Tel: 860-685-3669 or FAX: 860-685-2131