Results 21 to 30 of about 10,538,954 (217)

Circular polarization in T Tauri stars [PDF]

The Astrophysical Journal, 1986
We report the detection of circular polarization in three T Tauri stars with known intrinsic linear polarization. A circumstellar origin is required.
P. Bastien, R. Nadeau
openaire   +1 more source

T Tauri stars in the SuperWASP and NSVS surveys [PDF]

, 2019
We present a study of the long-term optical variability of young T Tauri stars using previously unpublished data from the Super-Wide Angle Search for Planets (SuperWASP) project.
Smalley, B., Paunzen, E., Hambalek, L., Vanko, M.   +3 more
core   +1 more source

Temperaments of young stars : rapid mass accretion rate changes in T Tauri and Herbig Ae stars [PDF]

, 2014
Funding: JSV would like to thank the UK Science and Technologies Facility Council (STFC) and the Northern Ireland Department of Culture Arts and Leisure (DCAL) for financial support.
G. Costigan, Jorick S. Vink, Vink, Jorick S., Ray, T., Testi, L., A. Scholz, T. Ray, L. Testi, Scholz, A., Costigan, G.   +9 more
core   +1 more source

Sodium ionization in T-tauri stars [PDF]

International Astronomical Union Colloquium, 1989
We present the results of a study of the sodium ionization and excitation in the winds of low-luminosity, pre-main-sequence stars. Line profiles for the Nal doublet at 5990,5986 Åare discussed and compared with the observations for those T Tauri stars with P-Cygni profiles.
A. Natta, C. Giovanardi
openaire   +1 more source

The surface magnetic activity of the weak-line T Tauri stars TWA 7 and TWA 25 [PDF]

, 2021
International audienceABSTRACT We present an analysis of spectropolarimetric observations of the low-mass weak-line T Tauri stars TWA 25 and TWA 7. The large-scale surface magnetic fields have been reconstructed for both stars using the technique of ...
Wittenmyer, R., Wright, D, Folsom, C, Hussain, G., Carter, B.D., Nicholson, B, Okumura, J, Donati, J.-F., Donati, J-F, Okumura, J., Carter, B, Hussain, G, Wittenmyer, R, Wright, D., Nicholson, B. A., Folsom, C.P.   +15 more
core   +1 more source

Mass accretion on to T Tauri stars [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
17 pages, 10 figures, accepted for publication by ...
Gregory, S. G., Jardine, M., Simpson, I., Donati, J.-F.   +3 more
openaire   +4 more sources

The surface magnetic activity of the weak-line T Tauri stars TWA 9A and V1095 Sco [PDF]

, 2018
International audienceWe present a detailed analysis of high-resolution spectropolarimetric observations of the weak-line T Tauri stars (wTTSs) TWA 9A and V1095 Sco as part of a wider survey of magnetic properties and activity in weak-line T Tauri stars,
Folsom, C. P., Mengel, M., Hussain, G. A. J., Wright, D., Nicholson, B. A., Donati, J.-F., Carter, B. D.   +6 more
core   +1 more source

Non thermal emission from T Tauri stars [PDF]

, 2010
T Tauri stars are low mass, pre-main sequence stars. These objects are surrounded by an accretion disk and present strong magnetic activity. T Tauri stars are copious emitters of X-ray emission which belong to powerful magnetic reconnection events ...
María V. del Valle, Gustavo E. Romero, del Valle, Maria Victoria, Romero, Gustavo Esteban   +3 more
core   +1 more source

T Tauri stars : mass accretion and X-ray emission [PDF]

, 2007
I develop the first magnetospheric accretion model to take account of the observed complexity of T Tauri magnetic fields, and the influence of stellar coronae.
Gregory, Scott
core   +2 more sources

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