Results 11 to 20 of about 206 (176)
Is T Tauri North a “Classical” T Tauri Star? [PDF]
The Astrophysical Journal, 2020 Abstract We present high-resolution H- and K-band spectroscopic observations of the archetypal T Tauri star T Tau North. Synthetic spectral modeling is used to derive the K-band temperature, surface gravity, magnetic field strength, and rotational velocity for this star. The K-band spectroscopic temperature measured is
C. Flores, B. Reipurth, M. S. Connelley
openaire +2 more sources
Spectropolarimetry of the Classical T Tauri Star T Tauri [PDF]
The Astronomical Journal, 2006 High-resolution (R ≈ 60,000) circular spectropolarimetry of the classical T Tauri star T Tau is presented. The star was observed on 1997 November 21 and 22. Analyzing 12 photospheric absorption lines, the mean longitudinal magnetic field is found to be Bz = 12 ± 35 G. The 3 σ upper limit of |Bz| ≤ 105 G.
Antoun G. Daou +2 more
openaire +1 more source
SPECTROPOLARIMETRY OF THE CLASSICAL T TAURI STAR BP TAU [PDF]
The Astrophysical Journal, 2012 We implement a least-squares deconvolution (LSD) code to study magnetic fields on cool stars. We first apply our code to high resolution (R ≈ 60,000) optical echelle spectra of several solar-like stars as tests of the code and to measure the mean longitudinal magnetic field on the surface of these stars.
Chen, Wei, Johns-Krull, Christopher M.
openaire +2 more sources
Rotation effects in classical T Tauri stars [PDF]
Astronomy Letters, 2012 Surface temperature inhomogeneities in classical T Tauri stars (CTTS) induced by magnetic activity and mass accretion lead to rotational modulation of both photometric and spectroscopic parameters of these stars. Using the extended photometric catalogue by Grankin et al. (2007), we have derived the periods and amplitudes of the rotational modulation of
Artemenko, Svetlana A. +2 more
openaire +2 more sources
Magnetospheric accretion-ejection processes in the classical T Tauri star AA Tauri [PDF]
Astronomy & Astrophysics, 2006 14 ...
Bouvier, J. +10 more
openaire +3 more sources
Accretion dynamics in the classical T Tauri star V2129 Ophiuchi [PDF]
Astronomy & Astrophysics, 2012 Accepted by Astronomy and ...
Alencar, S. H. P. +11 more
openaire +4 more sources
Stellar Winds of Classical T Tauri Stars [PDF]
International Astronomical Union Colloquium, 1997 AbstractWe present calculations of the structure of magnetized winds of classical T Tauri stars (TTSs) in an axisymmetric, stationary, polytropic approximation in a given magnetosphere (i.e. we do not selfconsistently take into account the influence of the flow dynamics on the structure of the underlying magnetosphere). According to the widely accepted
Gemot Paatz, Max Camenzind
openaire +1 more source
Are Both Stars in a Classic T Tauri Binary Classic T Tauri Stars?
The Astrophysical Journal, 1997 Large near-IR color excesses and emission-line spectra indicate the presence of optically thick circumstellar accretion disks and active boundary layers in young stars. We investigate whether this classic T Tauri (TT) behavior is found in one or both members of a binary system previously identified as a TT on the basis of the unresolved light.
L. Prato, M. Simon
openaire +1 more source
Classical T Tauri stars: magnetic fields, coronae and star–disc interactions [PDF]
Monthly Notices of the Royal Astronomical Society, 2013 The magnetic fields of young stars set their coronal properties and control their spin evolution via the star-disc interaction and outflows. Using 14 magnetic maps of 10 classical T Tauri stars (CTTSs) we investigate their closed X-ray emitting coronae, their open wind-bearing magnetic fields, and the geometry of magnetospheric accretion flows.
Johnstone, C. P. +4 more
openaire +5 more sources
PROTOPLANETARY DISKS AROUND CLASSICAL T TAURI STARS
Odessa Astronomical Publications, 2022 We have studied the energy distribution curves for a statistically significant number of classical T Tauri stars. It is shown that out of 49 stars, only 7 (14%) has I type of spectrum distribution, the rest belong to type II. Fundamental parameters, including the mass and age of objects are determined. It is shown that the amount of excess radiation in
N. Z. Ismailov +2 more
openaire +3 more sources