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X-Ray Determination of the Variable Rate of Mass Accretion onto TW Hydrae
(IOP Publishing, 2012-11-05)
Diagnostics of electron temperature (Te), electron density (ne), and hydrogen column density (NH) from the Chandra High Energy Transmission Grating spectrum of He-like Ne ix in TW Hydrae (TW Hya), in conjunction with a ...
The TW Hydrae association: trigonometric paralaxes and kinematic analysis
(EDP SciencesLes Ulis, 2014)
Context. The nearby TW Hydrae association (TWA) is currently a benchmark for the study of the formation and evolution of young
low-mass stars, circumstellar disks, and the imaging detection of planetary companions. For ...
CO and dust properties in the TW hya disk from high-resolution ALMA observations
(IOP Publishing Ltd, 2018)
We analyze high angular resolution ALMA observations of the TW Hya disk to place constraints on the CO and dust properties. We present new, sensitive observations of the (CO)-C-12 J = 3 - 2 line at a spatial resolution of ...
SSSPM J1102-3431 brown dwarf characterization from accurate proper motion and trigonometric parallax
(EDP SCIENCES S A, 2008)
Context. In 2005, Scholz and collaborators discovered, in a proper motion survey, a young brown dwarf SSSPM J1102-3431 (SSSPM J1102) of spectral type M8.5, probable member of the TW Hydrae Association and possible companion ...
TW Hya: Spectral Variability, X-Rays, and Accretion Diagnostics
(Iop Publishing, 2012-04-17)
The nearest accreting T Tauri star, TW Hya was intensively and continuously observed over ~17 days with spectroscopic and photometric measurements from four continents simultaneous with a long segmented exposure using the ...
Kinematic analysis and membership status of TWA22 AB
(EDP SCIENCES S A, 2009)
Context. TWA22 was initially regarded as a member of the TW Hydrae association (TWA). In addition to being one of the youngest (approximate to 8 Myr) and nearest (approximate to 20 pc) stars to Earth, TWA22 has proven to ...