248 citations · 853 across the 12 of their papers we have counts for
12 papers
Continuum And Line Emission From Accretion Shocks at T Tauri Stars I. Correlations With Shock Parameters
John Kwan
Fourteen models are calculated with the shock velocity ranging from 200 to 330 km s and pre-shock hydrogen nucleon density ranging from to $4\times 10^{1…
Interpreting Near Infrared Hydrogen Line Ratios in T Tauri Stars
Suzan Edwards, John Kwan, William Fischer +4
In accreting young stars one of the prominent spectral features in the near infrared is the Paschen and Brackett series in emission. We examine hydrogen line ratios for 16 classica…
Characterizing the IYJ Excess Continuum Emission in T Tauri Stars
William Fischer, Suzan Edwards, Lynne Hillenbrand +1
We present the first characterization of the excess continuum emission of accreting T Tauri stars between optical and near-infrared wavelengths. With nearly simultaneous spectra fr…
Origins of the H, He I, and Ca II Line Emission in Classical T Tauri Stars
John Kwan, William Fischer
We perform local excitation calculations to obtain line opacities and emissivity ratios and compare them with observed properties of H, He I, O I, Ca II, and Na I lines to determin…
Redshifted Absorption at He I 10830 as a Probe of the Accretion Geometry of T Tauri Stars
William Fischer, John Kwan, Suzan Edwards +1
We probe the geometry of magnetospheric accretion in classical T Tauri stars by modeling red absorption at He I 10830 via scattering of the stellar and veiling continua. Under the…
Modeling T Tauri Winds from He I 10830 Profiles
John Kwan, Suzan Edwards, William Fischer
The high opacity of He I 10830 makes it an exceptionally sensitive probe of the inner wind geometry of accreting T Tauri stars. In this line blueshifted absorption below the contin…