t-tauri
Modelling the magnetic activity and filtering radial velocity curves of young suns: The weak line T tauri star LkCa 4
... classical T-Tauri stars (cTTSs) when still surrounded by a massive (presumably planet-forming) accretion disc or weak-line T-Tauri stars (wTTSs) when their discs have mostly ...
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Simulations of winds of weak lined T Tauri stars II : The effects of a tilted magnetosphere and planetary interactions
... Despite the existing knowledge of the surface magnetic fields in young stars, the global structure of the stel- lar magnetic field is unknown. Magnetic field extrap- olations from surface magnetograms using the potential ...
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Photo-reverberation mapping of a protoplanetary accretion disk around a T Tauri star
... Theoretical models and spectroscopic observations of newborn stars suggest that protoplantary disks have an inner “ wall ” at a distance set by the disk interaction with the star. Around T Tauri stars, the ...
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Magnetically Controlled Accretion on the Classical T Tauri Stars GQ Lupi and TW Hydrae
... We present high spectral resolution (R ≈ 108,000) Stokes V polarimetry of the classical T Tauri stars (CTTSs) GQ Lup and TW Hya obtained with the polarimetric upgrade to the HARPS spectrometer on the ESO ...
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Rotational periods of T Tauri stars in Taurus-Auriga, south of Taurus-Auriga, and in MBM12
... Results. We found periodic variations for most of the targets. The measured periods of the T Tauri stars range from 0.57 to 7.4 days. The photometric variation can be ascribed to rotational modulation ...
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V1094 Scorpii: A rare giant multi-ringed disk around a T Tauri star
... without being accreted onto the star (e.g., Pinilla et al. 2012). Thus, rings can provide the material necessary for possible fu- ture planet formation. So far, several mechanisms have been proposed in the literature to ...
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CSI 2264 : accretion process in classical T Tauri stars in the young cluster NGC 2264
... Classical T Tauri stars with spot-like light curves correspond mostly to systems with a low mass-accretion rate and low mid-IR ...classical T Tauri stars observed in the 2008 and 2011 CoRoT ...
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The surface magnetic activity of the weak-line T Tauri stars TWA 9Aand V1095 Sco
... post-T Tauri star, which displays a large polar spot in addition to some lower attitude spot features (Donati & Collier Cameron 1997; Donati et ...
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Surface differential rotation and prominences of the Lupus post T Tauri star RX J1508.6-4423
... The present study focuses on an even younger and faster rotator, the post T Tauri star RX J1508.6±4423 located close to the Lupus star-forming region on which several recent studies were focused (e.g. ...
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Understanding the water emission in the mid and far IR from protoplanetary disks around T Tauri stars
... We explore here the parameter space around a standard T Tauri disk model to identify the main drivers of mid- and far-IR wa- ter spectroscopy. We primarly analyze two transitions, a mid-IR line at 12.407 μm ...
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Stellar energetic particle ionization in protoplanetary disks around T Tauri stars
... ical SP flux of f p (E p ≈ 10 MeV) ≈ 10 7 protons cm −2 s −1 (at 1 au) as commonly proposed for T Tauri stars and a particle energy distribution derived from measurements of solar particle events. Based on ...
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Discovery and observations of ASASSN 13db, an EX lupi type accretion event on a low mass T tauri star
... Among the defining characteristics of EXors are that they erupt every few years with variable peak luminosities, typical visual amplitudes of up to ∼4 mag, and outburst durations of a few months to a year. At minimum ...
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Role of local absorption on the X-ray emission from MHD accretion shocks in classical T Tauri stars
... Abstract. Accretion processes onto classical T Tauri stars (CTTSs) are believed to gen- erate shocks at the stellar surface due to the impact of supersonic downflowing plasma. Although current models of ...
5
Magnetic activity and hot Jupiters of young Suns : the weak line T Tauri stars V819 Tau and V830 Tau
... weak-line T Tauri stars (wTTSs) V819 Tau and V830 Tau within the MaTYSSE (Magnetic Topologies of Young Stars and the Survival of close-in giant Exoplanets) programme, involving the ESPaDOnS ...
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Magnetic activity and hot Jupiters of young Suns: the weak line T Tauri stars V819 Tau and V830 Tau
... the T Tauri star (TTS) phase, aged ...classical T-Tauri stars (cTTSs) when still surrounded by and accreting from mas- sive, planet-forming accretion discs, or weak-line T-Tauri ...
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Modelling the magnetic activity and filtering radial velocity curves of young Suns : the weak line T Tauri star LkCa 4
... weak-line T Tauri star LkCa 4 within the Magnetic Topologies of Young Stars and the Survival of close-in giant Exoplanets (MaTYSSE) programme, involving ESPaDOnS at the Canada–France–Hawaii ...classical ...
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Magnetic activity and radial velocity filtering of young Suns : the weak line T Tauri stars Par 1379 and Par 2244
... weak-line T-Tauri stars (wTTSs) Par 1379 and Par 2244, within the MaTYSSE (Magnetic Topologies of Young Stars and the Survival of close-in giant Exoplanets) ...
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Daemgen, Sebastian (2012): The evolution of protoplanetary disks in T Tauri binary systems. Dissertation, LMU München: Fakultät für Physik
... classical T Tauri stars in close binaries during target selection which can be due to the fact that classical T Tauri stars are typically considered more interesting in high-spatial resolution ...
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Discovery of new dipper stars with K2 : a window into the inner disc region of T Tauri stars
... Several works have suggested that the photometric vari- ability of young T Tauri stars can be attributed to warps in the disk at the inner edge and/or accretion streams. Bouvier et al. (2003) suggest this ...
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Modelling mid infrared molecular emission lines from T Tauri stars
... Generally speaking, strong mid-IR lines are emitted from ex- posed, irradiated molecules. In our models, such molecules ex- ist when (i) the gas / dust ratio is large, (ii) the dust is unusually transparent in the UV ...
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