Results 71 to 80 of about 58,191 (239)

THE PTF ORION PROJECT: A POSSIBLE PLANET TRANSITING A T-TAURI STAR [PDF]

open access: yes, 2012
We report observations of a possible young transiting planet orbiting a previously known weak-lined T-Tauri star in the 7–10 Myr old Orion-OB1a/25-Ori region. The candidate was found as part of the Palomar Transient Factory (PTF) Orion project.
J. V. Eyken   +37 more
semanticscholar   +1 more source

On the Mass Accretion Rates of Herbig Ae/Be Stars. Magnetospheric Accretion or Boundary Layer?

open access: yesGalaxies, 2020
Understanding how young stars gain their masses through disk-to-star accretion is of paramount importance in astrophysics. It affects our knowledge about the early stellar evolution, the disk lifetime and dissipation processes, the way the planets form ...
Ignacio Mendigutía
doaj   +1 more source

Doppler Probe of Accretion onto a T Tauri star [PDF]

open access: yes, 2014
The YY Ori stars are T Tauri stars with prominent time-variable redshifted absorption components that flank certain emission lines. One of the brightest in this class is S CrA, a visual double star. We have obtained a series of high-resolution spectra of
Gahm, Gösta   +4 more
core   +1 more source

The multiplicity of T Tauri stars in the star forming regions Taurus-Auriga and Ophiuchus-Scorpius: A 2.2 micron speckle imaging survey [PDF]

open access: yes, 1993
We present the results of a magnitude limited (K < =8.5 mag) speckle imaging survey of 69 T Tauri stars in the star forming regions Taurus-Auriga and Ophiuchus-Scorpius. Thirty-three companion stars were found with separations ranging from 0."07 to 2."5;
Ghez, A. M.   +2 more
core  

Discovery of a bipolar X-ray jet from the T Tauri star DG Tauri [PDF]

open access: yes, 2007
Aims. We have obtained and analyzed Chandra ACIS-S observations of the strongly accreting classical T Tauri star DG Tau. Our principal goals are to map the immediate environment of the star to characterize possible extended X-rays formed in the jet, and ...
M. Güdel   +6 more
semanticscholar   +1 more source

SPECTRAL AND PHOTOMETRIC RESEARCHES OF RY TAU

open access: yesOdessa Astronomical Publications, 2010
The results of analysis of the total light curve of the classic T Tauri type star RY Tau were presented. For a time at last 48 years a brightness of the star is characterized by fluctuations with amplitude about ΔV ∼1m, with characteristic time about 300
N. Z. Ismailov, H. N. Adigozalzade
doaj   +1 more source

Spectroscopic Confirmation of a Population of Isolated, Intermediate-mass Young Stellar Objects

open access: yesThe Astronomical Journal, 2022
Wide-field searches for young stellar objects (YSOs) can place useful constraints on the prevalence of clustered versus distributed star formation. The Spitzer/IRAC Candidate YSO (SPICY) catalog is one of the largest compilations of such objects (∼120 ...
Michael A. Kuhn   +11 more
doaj   +1 more source

No Fossil Disk in the T Tauri Multiple System V773 Tau [PDF]

open access: yes, 2003
We present new multi-epoch near-infrared and optical high-angular images of the V773 Tau pre-main sequence triple system, a weak-line T Tauri (WTTS) system in which the presence of an evolved, ``fossil'' protoplanetary disk has been inferred on the basis
A. J. Weinberger   +14 more
core   +2 more sources

MHD Simulations of Magnetized Stars in the Propeller Regime of Accretion

open access: yesEPJ Web of Conferences, 2014
Accreting magnetized stars may be in the propeller regime of disc accretion in which the angular velocity of the stellar magnetosphere exceeds that of the inner disc.
Lii Patrick   +2 more
doaj   +1 more source

Early Planet Formation in Embedded Disks (eDisk). I. Overview of the Program and First Results

open access: yesThe Astrophysical Journal, 2023
We present an overview of the Large Program, “Early Planet Formation in Embedded Disks (eDisk),” conducted with the Atacama Large Millimeter/submillimeter Array (ALMA).
Nagayoshi Ohashi   +36 more
doaj   +1 more source

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