Results 21 to 30 of about 7,097 (207)

A Magnetically Driven Disk Wind in the Inner Disk of PDS 70

The Astrophysical Journal, 2023
PDS 70 is so far the only young disk where multiple planets have been detected by direct imaging. The disk has a large cavity when seen at submillimeter and near-infrared wavelengths, which hosts two massive planets. This makes PDS 70 the ideal target to
Justyn Campbell-White, Carlo F. Manara, Myriam Benisty, Antonella Natta, Rik A. B. Claes, Antonio Frasca, Jaehan Bae, Stefano Facchini, Andrea Isella, Laura Pérez, Paola Pinilla, Aurora Sicilia-Aguilar, Richard Teague   +12 more
doaj   +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   +6 more sources

Accretion dynamics in the classical T Tauri star V2129 Ophiuchi [PDF]

Astronomy & Astrophysics, 2012
Accepted by Astronomy and ...
Alencar, S. H. P., Bouvier, J., Walter, F. M., Dougados, C., Donati, J. -F., Kurosawa, R., Romanova, M., Bonfils, X., Lima, G. H. R. A., Massaro, S., Ibrahimov, M., Poretti, E.   +11 more
openaire   +4 more sources

The Accretion History of EX Lup: A Century of Bursts, Outbursts, and Quiescence

The Astrophysical Journal, 2023
EX Lup is the archetype for the class of young stars that undergoes repeated accretion outbursts of ∼5 mag at optical wavelengths that last for months.
Mu-Tian Wang, Gregory J. Herczeg, Hui-Gen Liu, Min Fang, Doug Johnstone, Ho-Gyu Lee, Frederick M. Walter, Franz-Josef Hambsch, Carlos Contreras Peña, Jeong-Eun Lee, Mervyn Millward, Andrew Pearce, Berto Monard, Lihang Zhou   +13 more
doaj   +1 more source

HIGH-RESOLUTION ULTRAVIOLET RADIATION FIELDS OF CLASSICAL T TAURI STARS* [PDF]

The Astrophysical Journal, 2014
ABSTRACT The far-ultraviolet (FUV; 912–1700 Å) radiation field from accreting central stars in classical T Tauri systems influences the disk chemistry during the period of giant planet formation. The FUV field may also play a critical role in determining the evolution of the inner disk (r < 10 AU), from a gas- and dust-rich primordial
France, Kevin, Schindhelm, Eric, Bergin, Edwin, Roueff, Evelyne, Paris, Hervé   +4 more
openaire   +4 more sources

Mid‐infrared Spectroscopy of Disks around Classical T Tauri Stars [PDF]

The Astrophysical Journal Supplement Series, 2004
AASTEX, 10 pages text, 2 figures, 1 table, published September 2004 in The Astrophysical Journal Supplement ...
Forrest, W. J., Sargent, B., Furlan, E., D'Alessio, P., Calvet, N., Hartmann, L., Uchida, K. I., Green, J. D., Watson, D. M., Chen, C. H., Kemper, F., Keller, L. D., Sloan, G. C., Herter, T. L., Brandl, B. R., Houck, J. R., Barry, D. J., Hall, P., Morris, P. W., Najita, J., Myers, P. C.   +20 more
openaire   +3 more sources

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, Hasegawa, Takashi, Itoh, Yoichi, Kinugasa, Kenzo, Morita, Atsuko, Nagashima, Chie, Sugitani, Koji, Tamura, Motohide, Uehara, Mariko, Watanabe, Makoto   +9 more
core   +2 more sources

Classical T Tauri stars: accretion, wind, dust

Acta Astrophysica Taurica, 2021
Classical T Tauri stars (CTTS) are at the early evolutionary stage when the processes of planet formation take place in the surrounding accretion disks. Most of the observed activity in CTTS is due to magnetospheric accretion and wind flows. Observations of the accreting gas flows and appearance of the line-dependent veiling of the photospheric ...
openaire   +2 more sources

THE MAGNETIC FIELD IMPACT ON ACCRETION RATE IN A PROTOPLANETARY DISK

Odessa Astronomical Publications, 2012
Recent observations are the evidence of a large-scale magnetic field in discs around classical T Tauri stars. A model of the axisymmetric thin protoplanetary disk in a global magnetic field is considered.
M. M. Kuksa
doaj   +1 more source

A Three Micron Survey of the Chamaeleon I Dark Cloud [PDF]

, 2001
We describe an L-band photometric survey of 0.5 square deg of the Cha I dark cloud. The survey has a completeness limit of L < 11.0. Our survey detects 124 sources, including all known pre-main sequence stars with L < 11.
Alcala J. M., Appenzeller I., Cambresy L., Comeron F., Glass I. S., Huenemoerder D. P., Hyland A. R., Lawson W. A., Lynden-Bell D., Mercedes Gómez, Nordh L., Olofsson G., Persi P., Prusti T., Scott J. Kenyon   +14 more
core   +2 more sources