Results 11 to 20 of about 106 (103)
Variability of the transitional T Tauri star T Chamaeleontis [PDF]
Astronomy & Astrophysics, 2009 We characterize the physical properties of T Chamaeleontis, a transitional T Tauri star showing UX Ori-type variability, and of its associated disc, and probe possible effects of disc clearing processes. Different spectral diagnostics are examined, based on a rich collection of optical high- and low-resolution spectra. We determine radial and projected
Schisano, E. +5 more
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The Variability of the T Tauri Star DI Cephei [PDF]
International Astronomical Union Colloquium, 1983 Abstract:It is demonstrated that the light variations of DI Cephei can be explained as due to the combined effect of variable completely grey circumstellar extinction and variable continuous and line emission.
G. F. Gahm, P. P. Petrov
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The Spectral Variability of the T Tauri Star DF Tauri [PDF]
The Astrophysical Journal, 1997 We analyze 117 echelle spectra of the T Tauri star DF Tau, concentrating on variations in the optical continuum veiling and the strong emission lines. Although this star was the inspiration for the original suggestion of magnetospheric accretion in T Tauri stars (TTSs), this hypothesis is only partially supported in our data. We find that variations in
Christopher M. Johns‐Krull +1 more
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Synthetic Light Curves of Accretion Variability in T Tauri Stars [PDF]
The Astrophysical Journal, 2021 Abstract Photometric observations of accreting, low-mass, pre-main-sequence stars (i.e., Classical T Tauri stars; CTTS) have revealed different categories of variability. Several of these classifications have been linked to changes in .
Connor E. Robinson +2 more
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Photometric variability of southern T Tauri stars [PDF]
Astronomy and Astrophysics Supplement Series, 1998 We present photometric light curves of T Tauri Stars (TTS) observed in the Southern hemisphere. Our list includes 26 TTS, half of which were discovered by the Pico dos Dias survey (PDS). The majority of the ob- served PDS stars are weak TTS and present, on average, the low range of variability typical of such stars. We mon- itored some of the stars for
C. C. Batalha +8 more
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A search for rapid variability in T Tauri stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1996 We have obtained high-time-resolution CCD photometry of four classical T Tauri stars, and have conducted a search for rapid photometric variability with these data. Any real variations on time-scales of tens of minutes to hours are shown to be typically at most of order 0.01 mag for all four variables.
K. W. Smith +2 more
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The variability of T Tauri stars [PDF]
Symposium - International Astronomical Union, 1990 For many years we have monitored the variability of some bright T Tauri stars with the 0.6 m “Perkin telescope” at Van Vleck Observatory. Collaborators in this endeavor have included several astronomers at the Crimea Astrophysical Observatory, at Capidomonte Observatory, at the U.S. Naval Observatory, and even some sophisticated amateurs.
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Optical Variability of the T Tauri Star HH 30 IRS
The Astrophysical Journal, 2000 7 pages, 3 figures.
Wood, Kenneth +6 more
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The Astrophysical Journal, 2002 We present the analysis of 42 spectra of the Classical T Tauri star TW Hya observed with the FEROS echelle spectrograph over 2 yr. We determined the rotational and radial velocities of TW Hya, obtaining v sin i = 5 ± 2 km s-1 and vrad = 12.5 ± 0.5 km s-1.
Silvia H. P. Alencar, Celso Batalha
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Star-disc boundary layers in cataclysmic variables and T Tauri stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1989 La nature de l'interaction dans la couche limite entre un disque d'accretion et l'etoile centrale est etudiee. Des criteres simples sont etablis afin d'estimer la profondeur dans l'etoile pour laquelle l'interaction disque-etoile se developpe de maniere significative.
C. J. Clarke, D. A. Edwards
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