Results 41 to 50 of about 45,569 (296)

Flares in T Tauri stars [PDF]

International Astronomical Union Colloquium, 1995
This review concerns rapid variability, on time-scales of a few hours or less, occurring on T Tauri stars (TTS). There are several recent reviews on observed properties of TTS (e.g. Appenzeller & Mundt 1989, Bertout 1989, Gahm 1990a, Kuhi & Cram 1989), some with more emphasis on “flare-like” activity (Feigelson et al.
openaire   +2 more sources

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.
Pierre Bastien, R. Nadeau
openaire   +2 more sources

Erratum: Magnetic topologies of young suns: the weak-line T Tauri stars TWA 6 and TWA 8A [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present a spectropolarimetric study of two weak-line T Tauri stars (wTTSs), TWA 6, and TWA 8A, as part of the MaTYSSE (Magnetic Topologies of Young Stars and the Survival of close-in giant Exoplanets) programme. Both stars display significant Zeeman
C. Hill, C. Folsom, J. Donati, G. Herczeg, G. Hussain, S. Alencar, S. Gregory, the MaTYSSE collaboration   +7 more
semanticscholar   +1 more source

Surface magnetic fields on two accreting T Tauri stars: CV Cha and CR Cha [PDF]

, 2009
We have produced brightness and magnetic field maps of the surfaces of CV Cha and CR Cha: two actively accreting G and K-type T Tauri stars in the Chamaeleon I star-forming cloud with ages of 3-5 Myr.
A. Collier Cameron, Ardila, B. D. Carter, Bally, Barnes, Bary, Bouvier, Bouvier, C. Dougados, Camenzind, Collier Cameron, Collier Cameron, Covino, D'Antona, Donati, Donati, Donati, Donati, Donati, Donati, Donati, Donati, Donstone, Ercolano, Favata, Feigelson, G. A. J. Hussain, G. Aulanier, Gauvin, Gregory, Guenther, H. C. Stempels, Hatzes, Herbst, Herczeg, Hussain, Igea, J. Bouvier, J. Ferreira, J. Ramirez Velez, J.-F. Donati, Jardine, Johns-Krull, Kupka, Kurucz, Kurucz, Königl, Luhman, M. M. Jardine, M. Semel, Marconi, Mathys, Morin, N. Dunstone, Natta, Natta, Palla, Rebull, Reiners, Reipurth, Robrade, Schegerer, Semel, Shevchenko, Shu, Siess, Skelly, Stempels, T. Harries, Unruh, Unruh, Valenti, W. A. Lawson, Wade, Wichmann   +74 more
core   +5 more sources

TRACING SLOW WINDS FROM T TAURI STARS VIA LOW-VELOCITY FORBIDDEN LINE EMISSION [PDF]

, 2016
Using Keck/HIRES spectra (Δ v ∼ 7 km s−1) we analyze forbidden lines of [O i] 6300 Å, [O i] 5577 Å and [S ii] 6731 Å from 33 T Tauri stars covering a range of disk evolutionary stages.
M. Simon, I. Pascucci, S. Edwards, W. Feng, U. Gorti, D. Hollenbach, E. Rigliaco, J. Keane   +7 more
semanticscholar   +1 more source

Are T Tauri stars gamma-ray emitters? [PDF]

, 2011
T Tauri stars are young, low mass, pre-main sequence stars surrounded by an accretion disk. These objects present strong magnetic activity and powerful magnetic reconnection events.
Abdo, Aharonian, Aschwanden, Birk, Crutcher, Di Francesco, Drury, Dutrey, Ginzburg, Gustavo E. Romero, Hayashi, Johns-Krull, Josep Martí, Juan Ramón Sánchez-Sutil, Kowal, Kowal, Lazarian, Lin, Loinard, María Victoria del Valle, Montmerle, Munar-Adrover, Muzerolle, Owocki, Pedro Luis Luque-Escamilla, Romero, Schopper, Tsuboi, Tsuneta, Vila, Zenitani   +30 more
core   +2 more sources

Flares on T Tauri stars [PDF]

Symposium - International Astronomical Union, 1990
An overview of the characteristics of short-term light variability on T Tauri stars is given. The evidence of the occurrence of flares comes from observations mainly at X-ray energies and from patrole observations in the ultraviolet spectral region.
openaire   +1 more source

NIKA2 observations of dust grain evolution from star-forming filament to T-Tauri disk: Preliminary results from NIKA2 observations of the Taurus B211/B213 filament [PDF]

EPJ Web of Conferences
To understand the evolution of dust properties in molecular clouds in the course of the star formation process, we constrain the changes in the dust emissivity index from star-forming filaments to prestellar and protostellar cores to T Tauri stars. Using
Nguyen-Luong Q., Adam R., Ade P., Ajeddig H., André P., Artis E., Aussel H., Beelen A., Benoît A., Berta S., Bing L., Bourrion O., Calvo M., Catalano A., De Petris M., Désert F.-X., Doyle S., Driessen E.F.C., Ejlali G., Gomez A., Goupy J., Hanser C., Katsioli S., Kéruzoré F., Kramer C., Ladjelate B., Lagache G., Leclercq S., Lestrade J.-F., Macías-Pérez J. F., Madden S.C., Maury A., Mauskopf P., Mayet F., Monfardini A., Moyer-Anin A., Muñoz-Echeverría M., Perotto L., Pisano G., Ponthieu N., Revéret V., Rigby A.J., Ritacco A., Romero C., Roussel H., Ruppin F., Schuster K., Sievers A., Tucker C., Zylka R., Bacmann A., Duong-Tuan A., Peretto N., Rigby A.   +53 more
doaj   +1 more source

Long-term optical photometric monitoring of the FUor star V900 Mon [PDF]

Serbian Astronomical Journal, 2021
We present results from photometric monitoring of V900 Mon, one of the newly discovered and still under-studied object from the FU Orionis type. The FUor phenomenon is very rarely observed, but it is essential for stellar evolution.
Semkov E.H., Peneva S.P., Ibryamov S.I.
doaj   +1 more source

A Survey and Analysis of Spitzer Infrared Spectrograph Spectra of T Tauri Stars in Taurus [PDF]

, 2006
We present mid-infrared spectra of T Tauri stars in the Taurus star-forming region obtained with the Spitzer Infrared Spectrograph (IRS). For the first time, the 5-36 μm spectra of a large sample of T Tauri stars belonging to the same star-forming region
E. Furlan, L. Hartmann, N. Calvet, P. D’Alessio, R. Franco-Hernández, W. Forrest, D. Watson, K. Uchida, B. Sargent, J. Green, L. Keller, T. University, Ithaca, Ny, U. Michigan, A. Arbor, Mi, Unam, Morelia, Mexico., U. Rochester, Rochester, Ithaca College   +22 more
semanticscholar   +1 more source