Results 71 to 80 of about 57,378 (307)
The large-scale magnetic field and poleward mass accretion of the classical T Tauri star TW Hya [PDF]
, 2011 We report here results of spectropolarimetric observations of the ≃8 Myr classical T Tauri star (cTTS) TW Hya carried out with ESPaDOnS at the Canada–France–Hawaii Telescope in the framework of the ‘Magnetic Protostars and Planets’ programme, and ...
J. Donati +11 more
semanticscholar +1 more source
Dust Around T Tauri Stars [PDF]
Journal of Astronomy and Space Sciences, 2011 To reproduce the multiple broad peaks and the fine spectral features in the spectral energy distributions (SEDs) of T Tauri stars, we model dust around T Tauri stars using a radiative transfer model for multiple isothermal circumstellar dust shells. We calculate the radiative transfer model SEDs for multiple dust shells using the opacity functions for ...
Kyung-Won Suh, Young-Joo Kwon
openaire +2 more sources
A LAMOST Spectroscopic Study of T Tauri Stars in the Orion OB1a Subassociation
The Astronomical Journal, 2023 We present a spectroscopic analysis of T Tauri stars (TTSs) observed with the wide-field multifiber spectrograph LAMOST in the substellar associations Ori OB1a located in the Orion Star-forming Complex.
Jesús Hernández +11 more
doaj +1 more source
Star Spot Induced Radial Velocity Variability in LkCa 19
, 2007 We describe a new radial velocity survey of T Tauri stars and present the first results. Our search is motivated by an interest in detecting massive young planets, as well as investigating the origin of the brown dwarf desert.
Bouvier J. +9 more
core +1 more source
Probable association of T Tauri stars with the L1014 dense core [PDF]
, 2006 Using the Wide Field Grism Spectrograph 2 (WFGS2), we have carried out slit-less spectroscopy, g'r'i' photometry, and slit spectroscopy on the L1014 dense core. We detected three Halpha emission line stars.
Ebizuka, Noboru +9 more
core +2 more sources
Mottled Protoplanetary Disk Ionization by Magnetically Channeled T Tauri Star Energetic Particles [PDF]
, 2017 The evolution of protoplanetary disks is believed to be driven largely by angular momentum transport resulting from magnetized disk winds and turbulent viscosity. The ionization of the disk that is essential for these processes has been thought to be due
F. Fraschetti +3 more
semanticscholar +1 more source
Disks Around T Tauri Stars [PDF]
International Astronomical Union Colloquium, 1994 AbstractA variety of evidence suggests that at least 50% of T Tauri stars are surrounded by disks of gas and dust. Inferred disk properties are compatible with those generally attributed to the solar nebula, before the formation of planets. Millimeter-wave aperture synthesis mapping of molecular line and dust continuum emission from T Tauri stars ...
Anneila Sargent, Steven Beckwith
openaire +1 more source
Analysis of star-disk interaction in young stellar systems
EPJ Web of Conferences, 2014 We present preliminary results of the study of star-disk interaction in the classical T Tauri star V354 Mon, a member of the young stellar cluster NGC 2264.
Fonseca N.N.J. +2 more
doaj +1 more source
ULTRAVIOLET SPECTRUM VARIABILITY OF BP TAU
Odessa Astronomical Publications, 2010 Results of the ultraviolet IUE archive spectrum researches of classic T Tauri type star BP Tau had been presented. Spectroscopic parameters of mainly strong emission lines were measured.
N. Z. Ismailov +3 more
doaj +1 more source
Correlating Changes in Spot Filling Factors with Stellar Rotation: The Case of LkCa 4
The Astrophysical Journal, 2023 We present a multi-epoch spectroscopic study of LkCa 4, a heavily spotted non-accreting T Tauri star. Using SpeX at NASA’s Infrared Telescope Facility (IRTF), 12 spectra were collected over five consecutive nights, spanning ≈1.5 stellar rotations.
Facundo Pérez Paolino +6 more
doaj +1 more source