Results 1 to 10 of about 206 (176)

LIGHT CURVE TYPES OF CLASSIC T TAURI STARS

open access: yesOdessa 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   +4 more sources

Dust Around T Tauri Stars [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2011
To reproduce the multiple broad peaks and the fine spectral features in the spectral energy distributions (SEDs) of T Tauri stars, we model dust around T Tauri stars using a radiative transfer model for multiple isothermal circumstellar dust shells. We
Kyung-Won Suh, Young-Joo Kwon
doaj   +1 more source

Photometric and spectroscopic study of five pre-main sequence stars in the vicinity of NGC 7129 [PDF]

open access: yesSerbian Astronomical Journal, 2019
We present results from long-term optical photometric and spectroscopic observations of five pre-main sequence stars, located in the vicinity of the bright nebula NGC 7129.
Semkov E.H., Ibryamov S.I., Peneva S.P.
doaj   +1 more source

Discovery of Two Different Full Disk Evolutionary Patterns of M-type T Tauri Stars with LAMOST DR8

open access: yesThe Astrophysical Journal, 2023
The full disk, full of gas and dust, determines the upper limit of planet masses, and its lifetime is critical for planet formation, especially for giant planets.
Hasitieer Haerken   +4 more
doaj   +1 more source

High-resolution [O i] Line Spectral Mapping of TW Hya Consistent with X-Ray-driven Photoevaporation

open access: yesThe Astrophysical Journal Letters, 2023
Theoretical models indicate that photoevaporative and magnetothermal winds play a crucial role in the evolution and dispersal of protoplanetary disks and affect the formation of planetary systems.
Christian Rab   +4 more
doaj   +1 more source

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

open access: yesThe 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   +12 more
doaj   +1 more source

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

open access: yesThe 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   +13 more
doaj   +1 more source

THE MAGNETIC FIELD IMPACT ON ACCRETION RATE IN A PROTOPLANETARY DISK

open access: yesOdessa 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

Observational Tests of Magnetospheric Accretion Models in Young Stars

open access: yesEPJ Web of Conferences, 2014
Magnetically controlled accretion of disk material onto the surface of Classical T Tauri stars is the dominant paradigm in our understanding of how these young stars interact with their surrounding disks.
Johns–Krull Christopher M.   +1 more
doaj   +1 more source

Observable Signatures of Classical T Tauri Stars Accreting in an Unstable Regime

open access: yesEPJ Web of Conferences, 2014
We discuss key observational signatures of Classical T Tauri stars (CTTSs) accreting through Rayleigh-Taylor instability, which occurs at the interface between an accretion disk and a stellar magnetosphere.
Kurosawa Ryuichi, Romanova M. M.
doaj   +1 more source

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