Results 41 to 50 of about 58,006 (237)

LIGHT CURVE TYPES OF CLASSIC T TAURI STARS

Odessa Astronomical Publications, 2016
By using the archive photometric data’s obtained for a long time intervals we have carried out a master light curves of 28 classical T Tauri type stars. For the physical character of variability mainly 5 type light curves can be separated.
N. Z. Ismailov, H. N. Adygezalzade
doaj   +1 more source

Large Myr-old Disks Are Not Severely Depleted of Gas-phase CO or Carbon

The Astrophysical Journal, 2023
We present an ACA search for [C i ] 1–0 emission at 492 GHz toward large T Tauri disks (gas radii ≳ 200 au) in the ∼1–3 Myr-old Lupus star-forming region. Combined with Atacama Large Millimeter/submillimeter Array 12 m archival data for IM Lup, we report
Ilaria Pascucci, Bennett N. Skinner, Dingshan Deng, Maxime Ruaud, Uma Gorti, Kamber R. Schwarz, Edwige Chapillon, Miguel Vioque, James Miley   +8 more
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Another deep dimming of the classical T Tauri star RW Aurigae A [PDF]

, 2015
Context. RWAur A is a classical T Tauri star (CTTS) with an unusually rich emission line spectrum. In 2014 the star faded by similar to 3 mag in the V band and went into a long-lasting minimum.
P. Petrov, G. Gahm, A. Djupvik, E. Babina, S. Artemenko, K. Grankin   +5 more
semanticscholar   +1 more source

Inner disk structure of the classical T Tauri star LkCa 15 [PDF]

Astronomy & Astrophysics, 2018
Context. Magnetospheric accretion has been thoroughly studied in young stellar systems with full non-evolved accretion disks, but it is poorly documented for transition disk objects with large inner cavities. Aims.
S. Alencar, J. Bouvier, J. Donati, E. Alecian, C. Folsom, K. Grankin, G. Hussain, C. Hill, A. Cody, A. Carmona, C. Dougados, S. Gregory, G. Herczeg, F. M'enard, C. Moutou, L. Malo, M. Takami, the MaTYSSE collaboration   +17 more
semanticscholar   +1 more source

Oscillations of the Boundary Layer and High-frequency QPOs

EPJ Web of Conferences, 2014
We observed persistent high-frequency oscillations of the boundary layer near an accreting, weakly-magnetized star in global 3D MHD simulations. The tilted dipole magnetic field is not strong enough to open a gap between the star and the disk.
Blinova A. A., Bachetti M., Romanova M. M.   +2 more
doaj   +1 more source

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, Luisa F. Zamudio, César Briceño, Nuria Calvet, Zhaohuan Zhu, Haibo Yuan, Xiaowei Liu, Ezequiel Manzo-Martínez, Carlos G. Román-Zúñiga, Javier Serna, Karina Maucó, Lucía Adame   +11 more
doaj   +1 more source

Observational Constraints on the Formation and Evolution of Binary Stars [PDF]

, 2001
We present a high spatial resolution UV to NIR survey of 44 young binary stars in Taurus with separations of 10-1000 AU. The primary results include: (1) The relative ages of binary star components are more similar than the relative ages of randomly ...
A. M. Ghez, Baraffe I., Bastien P., Bate M. R., Bertout C., Boss A. P., Bouvier J., Brandner W., Duchene G., Duchene G., Duquennoy A., Dutrey A., Dutrey A., Duvert G., Gahm G. F., Guilloteau S., Haas M., Hall S. M., Herbig G. H., Hessman F. V., Kohler R., Labeyrie A., Leinert Ch., Leinert Ch., Magazzu A., Martin E. L., Moneti A., Monin J.-L., Monin J.-L., Preibisch T., R. J. White, Reipurth B., Rice J. B., Richichi A., Sartoretti P., Schwartz R. D., Wichmann R., Woitas J.   +37 more
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Magnetospheric accretion on the T Tauri star BP Tauri [PDF]

, 2008
From observations collected with the ESPaDOnS and NARVAL spectropolarimeters, we report the detection of Zeeman signatures on the classical T Tauri star BP Tau.
J. Donati, M. Jardine, S. Gregory, P. Petit, F. Paletou, J. Bouvier, C. Dougados, F. Ménard, A. Cameron, T. Harries, G. Hussain, Y. Unruh, J. Morin, S. Marsden, N. Manset, M. Aurière, C. Català, E. Alecian   +17 more
semanticscholar   +1 more source

MAGNETOSPHERIC ACCRETION IN T TAURI STARS: OBSERVATIONAL TEST

Odessa Astronomical Publications, 2017
In the classical T Tauri stars (CTTS) the magnetic field plays an important role in the interaction between the star and the accretion disk. In 1996-2000 we have carried out an extensive spectroscopic and photometric monitoring of the extremly active ...
P. P. Petrov
doaj   +1 more source

Magnetic fields and accretion flows on the classical T Tauri star V2129 Oph [PDF]

, 2007
From observations collected with the ESPaDOnS spectropolarimeter, we report the discovery of magnetic fields at the surface of the mildly accreting classical T Tauri star V2129 Oph.
J. Donati, M. Jardine, S. G. Gregory, Pascal Petit, J. Bouvier, C. Dougados, F. Ménard, A. Cameron, T. Harries, S. Jeffers, F. Paletou   +10 more
semanticscholar   +1 more source