Contents

• List of Figures
• List of Tables
• Introduction
  • T Tauri Stars: Overview
  • Testing the Magnetospheric Accretion Model
  • Hydrogen Emission Lines in T Tauri Stars
• Observations
  • UKIRT
  • CGS4
  • Data Acquisition
    • Setting Up Procedure
      • The CONFIG File
    • Taking Data
    • Observing an Astronomical Object
  • Sample of Observed T Tauri Stars
  • Observing Run: 1994
  • Observing Run: 1995
• Data Reduction
  • General Procedure
    • Bad Pixel Masking
    • Bias Subtraction
    • Flat Fielding
    • Interleaving
    • Sky Subtraction
    • Optimal Extraction
    • De-rippling
    • Wavelength Calibration
    • Atmospheric Transmission and Instrumental Response
    • Flux Calibration
  • UT9410 Observing Run: Data Reduction
    • De-rippling
    • Wavelength Calibration
    • Atmospheric Transmission and Instrumental Response
    • Continuum Normalization
  • UT1295 Observing Run: Data Reduction
    • De-rippling
    • CVF Fringing
    • Wavelength Calibration
    • Atmospheric Transmission and Instrumental Response
    • Continuum Normalization
  • Noise Considerations
  • Velocity Scale
  • Spectra
• Veiling
  • Computational Method
  • Choice of Template Star
  • Binaries and Veiling
  • Results
  • Discussion of Veiling Results
    • General Discussion
    • How Reliable are the Veiling Results?
      • Spectral Type Mismatch
      • (J-K) Colours
      • Comparison With Other Work
  • Conclusion
• Line Profiles: Observations
  • Line Profile Classification
  • Line Parameters
    • Line Parameters: Computational Method
    • Line Parameters: Results
  • Statistics
    • Full Width at Half Maximum (FWHM)
    • Wing Maximum Velocity ( and )
    • Velocity of the Line Peak ()
    • Asymmetry Factor (Af)
    • The Type I Line Profiles
    • The Type II and Type III Line Profiles
    • The Type IV R Line Profiles
  • Discussion
    • Comparison with Accretion/Wind Models
    • The IPC Line Profiles
    • The Type I Line Profiles
    • Viewing Angle Effects
    • Multiple Systems
    • Comparison with other Pa /Br Line Profile Data
    • Line Profile Variability
  • Conclusion
• Line Profiles: Modeling
  • Computational Method
    • CLOUDY
    • Line Profiles
    • Implementation
  • Input Parameters
  • Tests
  • Results
    • Wind Models
    • Accretion Models
  • Conclusions
• Epilogue
  • Line Profiles
  • Veiling
  • Future Directions
• Histograms: Method for Computation
• Publications
• References
• About this document ...