Results 61 to 70 of about 57,378 (307)

Oscillations of the Boundary Layer and High-frequency QPOs

open access: yesEPJ 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.   +2 more
doaj   +1 more source

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   +1 more source

Search for young stars among ROSAT All-Sky Survey X-ray sources in and around the R CrA dark cloud [PDF]

open access: yes, 2000
We present the ROSAT All-Sky Survey data in a 126 deg^2 area in and around the CrA star forming region. With low-resolution spectroscopy of unidentified ROSAT sources we could find 19 new pre-main sequence stars, two of which are classical T Tauri stars,
Alcala, Juan M.   +8 more
core   +2 more sources

The hot Jupiter of the magnetically active weak-line T Tauri star V830 Tau [PDF]

open access: yes, 2016
We report results of an extended spectropolarimetric and photometric monitoring of the weak-line T Tauri star V830 Tau and its recently-detected newborn close-in giant planet.
J. Donati   +20 more
semanticscholar   +1 more source

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

open access: yesThe 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   +8 more
doaj   +1 more source

X-ray emission from MP Muscae: an old classical T Tauri star [PDF]

open access: yes, 2007
We study the properties of X-ray emitting plasma of MP Mus, an old classical T Tauri star. We aim at checking whether an accretion process produces the observed X-ray emission and at deriving the accretion parameters and the characteristics of the shock ...
A. Maggio   +29 more
core   +2 more sources

Mass accretion on to T Tauri stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2006
17 pages, 10 figures, accepted for publication by ...
Gregory, S. G.   +3 more
openaire   +4 more sources

Observational clues to the physics at the magnetosphere in young stellar objects

open access: yesEPJ Web of Conferences, 2014
Classical T Tauri stars offer an excellent laboratory to study the accretion process and star-disk interaction, which define the transfer of mass and angular momentum in the system. The interaction takes place very close to the star, in a region of about
Alencar Silvia H. P.
doaj   +1 more source

MAGNETOSPHERIC ACCRETION IN T TAURI STARS: OBSERVATIONAL TEST

open access: yesOdessa 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

Another deep dimming of the classical T Tauri star RW Aurigae A [PDF]

open access: yes, 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   +5 more
semanticscholar   +1 more source

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