Results 151 to 160 of about 57,378 (307)

A Multiwavelength, Multiepoch Monitoring Campaign of Accretion Variability in T Tauri Stars from the ODYSSEUS Survey. I. HST Far-UV and Near-UV Spectra

open access: yesThe Astrophysical Journal
The classical T Tauri star (CTTS) stage is a critical phase of the star and planet formation process. In an effort to better understand the mass accretion processes, which can dictate future stellar evolution and planet formation, a multiepoch ...
John Wendeborn   +19 more
doaj   +1 more source

Mid-IR observations of circumstellar disks -- Part III: A mixed sample of PMS stars and Vega-type objects

open access: yes, 2009
We present new mid-infrared spectra for a sample of 15 targets (1 FU Orionis object, 4 Herbig Ae stars, 5 T Tauri stars and 5 Vega type stars), obtained with the TIMMI2 camera at La Silla Observatory (ESO).
Acke   +120 more
core   +1 more source

Stellar Rotation of T Tauri Stars in the Orion Star-forming Complex

open access: hybrid, 2021
Javier Serna   +16 more
openalex   +1 more source

HOT GAS LINES IN T TAURI STARS

open access: yesThe Astrophysical Journal Supplement Series, 2013
ABSTRACT For Classical T Tauri Stars (CTTSs), the resonance doublets of N v, Si iv, and C iv, as well as the He ii 1640 Å line, trace hot gas flows and act as diagnostics of the accretion process. In this paper we assemble a large high-resolution, high-sensitivity data set of these lines in CTTSs and Weak T Tauri Stars (WTTSs).
Ardila, David   +22 more
openaire   +5 more sources

When the Wall Fell: Study of Polycyclic Aromatic Hydrocarbons in T Chamaeleontis Using JWST

open access: yesThe Astronomical Journal
We investigate the polycyclic aromatic hydrocarbon (PAH) emission features of T Cha, a G8-type T Tauri star that has exhibited “seesaw”-type mid-infrared continuum variability over nearly two decades due to the destruction of the disk’s inner wall, using
R. Arun
doaj   +1 more source

Analytic and numerical models of the 3D multipolar magnetospheres of pre-main sequence stars

open access: yes, 2011
Traditionally models of accretion of gas on to T Tauri stars have assumed a dipole stellar magnetosphere, partly for simplicity, but also due to the lack of information about their true magnetic field topologies.
Altschuler   +67 more
core   +1 more source

Fundamental stellar parameters for selected T-Tauri stars in the Chamaeleon and Rho Ophiuchus star-forming regions [PDF]

open access: bronze, 2016
D. J. James   +6 more
openalex   +1 more source

The GRAVITY Young Stellar Object survey -- IX. Spatially resolved\n kinematics of hot hydrogen gas in the star/disk interaction region of T Tauri\n stars [PDF]

open access: green, 2022
J. A. Wojtczak   +60 more
openalex   +1 more source

ALMA High-resolution Observation for the Transitional Disk Around IRAS 04125+2902

open access: yesThe Astrophysical Journal
Recently, the youngest transiting planet was discovered around the T Tauri star, IRAS 04125+2902, in the Taurus-Auriga star-forming region. This system is crucial for understanding the early stages of planet formation.
Ayumu Shoshi   +7 more
doaj   +1 more source

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