Results 121 to 130 of about 10,538,954 (217)

Análisis comparativo de los indicadores de rotación estelar en una muestra de estrellas T-Tauri y post T-Tauri

, 2012
En esta tesis se describen los procesos de medición de dos indicadores rotacionales como la velocidad ecuatorial proyectada vsini usando el método de correlación cruzada, en espectros FEROS (The Fiber-fed Extended Range Optical Spectrograph) obtenidos de
Rodríguez Gómez, Jenny Marcela
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X-ray emitting T Tauri stars in the L1551 cloud [PDF]

, 1995
Low mass pre-main sequence stars in the nearby Lynds 1551 star forming cloud are studied with the ROSAT and ASCA X-ray satellites. An 8 ksec ROSAT image reveals 38 sources including 7 well-known T Tauri stars, 2 likely new weak-lined T Tauri stars, 5 ...
Feigelson, Eric D., Koyama, Katsuji, Carkner, Lee, Montmerle, Thierry, Reid, I. Neill   +4 more
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The Magnetic Fields on T Tauri Stars

, 2008
T Tauri stars are low mass, pre-main sequence stars, many of which are still surrounded by active accretion disks where it is believed planet formation is currently under way.
Johns-Krull, Christopher M.
core   +1 more source

Constrictive Pericarditis in the Light of Multimodal Cardiac Imaging. A Case Report. [PDF]

Maedica (Bucur), 2023
Darabont RO, Ene C, Nicula AI, Badiu CC, Vinereanu D.   +4 more
europepmc   +1 more source

Active Young Stars in the LAMOST–Kepler Survey

The Astrophysical Journal Supplement Series
In the early stages of their lives, young stars harbor diverse processes exhibiting strong signatures, making them ideal targets for investigating stellar accretion, dynamo actions, and exoplanet formation.
FuKun Xu, Shenghong Gu, Yue Xiang
doaj   +1 more source

Haro 5-2: A New Pre-main-sequence Quadruple Stellar System

The Astronomical Journal
We have discovered that the H α emission-line star Haro 5-2, located in the 3–6 Myr old Ori OB1b association, is a young quadruple system. The system has a 2+2 configuration, with an outer separation of 2.″6 and with resolved subarcsecond inner binary ...
Bo Reipurth, C. Briceño, T. R. Geballe, C. Baranec, S. Mikkola, A. M. Cody, M. S. Connelley, C. Flores, B. A. Skiff, J. D. Armstrong, N. M. Law, R. Riddle   +11 more
doaj   +1 more source

Characterizing circumstellar disk around young stars [PDF]

, 2010
The circumstellar disks play a fundamental role in star and planet formation process. Studies on circumstellar disks are generally carried on following two viable approaches: "statistical" studies, where a large samples of sources are measured to ...
Schisano, Eugenio
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Accretion Properties of the Young Brown Dwarf 2MASS J08440915-7833457

The Astrophysical Journal
We present Hubble Space Telescope Cosmic Origins Spectrograph far-ultraviolet (FUV) and Space Telescope Imaging Spectrometer (STIS) optical observations toward the young accreting brown dwarf 2MASS J08440915-7833457 (J0844) from the UV Legacy Library of ...
Toni V. Panzera, Laura S. Flagg, Margaret A. Mueller, Christopher M. Johns-Krull, Gregory J. Herczeg   +4 more
doaj   +1 more source

Gone with the Molecular Wind: Photoevaporation in the Compact Dust Disk around CX Tau

The Astrophysical Journal
We present Keck NIRSPEC+AO high-resolution ( R ∼ 25,000), mid-infrared ( M -band: 4.6–5.2 μ m) spectra of the protoplanetary disk CX Tau. CX Tau provides an ideal laboratory to study inner disk chemistry in a disk where the signs of radial drift of ...
Alexa R. Anderson, Jonathan P. Williams, Geoff A. Blake, Klaus M. Pontoppidan, Colette Salyk, A. C. Adwin Boogert, Clara Ross, L. Ilsedore Cleeves   +7 more
doaj   +1 more source

Close Companions to T Tauri Stars: Abundant and Perturbing [PDF]

, 1994
The results of a speckle imaging survey of T Tauri stars suggest that most, if not all, young low mass stars have companions. Furthermore, this survey reveals a distinction between the classical T Tauri stars (CTTS) and the weak-lined T Tauri stars ...
McCarthy, D. W., Jr., Ghez, A. M.
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