Results 141 to 150 of about 45,569 (296)
Exiles and innovators: a survey of heretics in sixteenth‐century Europe
Renaissance Studies, Volume 39, Issue 1, Page 26-40, February 2025.Abstract The links between exile and innovation have often been studied in the case of the twentieth century, but much less in the case of early modern Europe – an age of some political exiles and many religious ones. This essay focuses on what has been called ‘the Reformation of the Refugees’ in the early sixteenth century.
Peter Burke
wiley +1 more source
Some resolutions on T Tauri stars [PDF]
Symposium - International Astronomical Union, 1990 This symposium is dedicated to the results of studies of flare stars. The necessity of the detailed analysis of observational data on flare stars follows from the very simple fact, that until now the theory has not found for the answer to the question: why the young stars of low luminosity are flaring.
openaire +1 more source
, 2005 We present the results of an XMM-Newton observation of the young (~2-4 Myr) cluster around the hot star sigma Orionis. In a previous paper we presented the analysis of the RGS spectrum of the central hot star; here we discuss the results of the analysis ...
Argiroffi +69 more
core +1 more source
The Astrophysical JournalThe surface magnetic fields of pre-main-sequence stars and zero-age main-sequence stars are notably strong, resulting in the generation of numerous spots and the emission of bright chromospheric lines.
Mai Yamashita, Yoichi Itoh, Shin Toriumi
doaj +1 more source
X-ray Diagnostics of Grain Depletion in Matter Accreting onto T Tauri Stars
, 2005 Recent analysis of high resolution Chandra X-ray spectra has shown that the Ne/O abundance ratio is remarkably constant in stellar coronae. Based on this result, we point out the utility of the Ne/O ratio as a discriminant for accretion-related X-rays ...
Bertout C. +8 more
core +1 more source
Rotational Evolution of Classical T Tauri Stars: Models and Observations
The Astrophysical JournalWe developed a grid of stellar rotation models for low-mass and solar-type classical T Tauri stars (CTTS; 0.3 M _⊙ < M _* < 1.2 M _⊙ ). These models incorporate the star–disk interaction and magnetospheric ejections to investigate the evolution of the ...
Javier Serna +19 more
doaj +1 more source
Observable Signatures of Classical T Tauri Stars Accreting in an Unstable Regime
EPJ Web of Conferences, 2014 We discuss key observational signatures of Classical T Tauri stars (CTTSs) accreting through Rayleigh-Taylor instability, which occurs at the interface between an accretion disk and a stellar magnetosphere.
Kurosawa Ryuichi, Romanova M. M.
doaj +1 more source
The Astrophysical JournalThe accretion/ejection processes in T Tauri stars are fundamental to their physical evolution, while also impacting the properties and evolution of the circumstellar material at a time when planet formation takes place.
Sebastián Jorquera +16 more
doaj +1 more source
T Tauri and FU Orionis Stars [PDF]
Symposium - International Astronomical Union, 1975 A great deal of information on the continuous radiation of T Tau- and similar type stars has been acquired. The cause of the ultraviolet and infrared excess emission is discussed. The possibility that the blue continuum may arise from numerous line emissions is considered.
openaire +2 more sources
Evidence for Dust Depletion in a Misaligned Protoplanetary Disk with JWST
The Astrophysical Journal LettersHere we report the detection of dust depletion in a misaligned inner disk around UX Tau A using JWST MIRI spectra. Mid-infrared (MIR) continuum “seesaw” variability was detected in this disk by Spitzer and attributed to variable shadows cast on the outer
C. C. Espaillat +14 more
doaj +1 more source