248 citations · 853 across the 12 of their papers we have counts for
6 papers · 1 filter
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…
Non-Equilibrium Ionization Model for Stellar Cluster Winds and its Application
Li Ji, Q. Daniel Wang, John Kwan
We have developed a self-consistent physical model for super stellar cluster winds based on combining a 1-D steady-state adiabatic wind solution and a non-equilibrium ionization ca…
Probing T Tauri Accretion and Outflow with 1 Micron Spectroscopy
Suzan Edwards, William Fischer, Lynne Hillenbrand +1
In a high dispersion 1 micron survey of 39 classical T Tauri stars veiling is detected in 80%, and He I 10830 and Pgamma line emission in 97% of the stars. On average, the 1 micron…
He I 10830 as a Probe of Winds in Accreting Young Stars
S. Edwards, W. Fischer, J. Kwan +2
He I 10830 profiles acquired with Keck's NIRSPEC for 6 young low mass stars with high disk accretion rates (AS 353A, DG Tau, DL Tau, DR Tau, HL Tau and SVS 13) provide new insight…
FeII and FeI emission in IRAS 07598+6508 and PHL 1092
John Kwan, Fu-zhen Cheng, Li-Zhi Fang +2
One of the puzzles in understanding the spectra of active galactic nuclei (AGN) is the origin of the FeII emission. FeI emission, if present, will help reveal the physical conditio…