Results 21 to 30 of about 11,236 (116)
Pre-Main Sequence Stars Seen by ISO [PDF]
Space Science Reviews, 2005 Observations of pre-main sequence objects (T Tauri, Herbig Ae/Be and FU Orionis stars) obtained with the instrumentation on board the Infrared Space Observatory (ISO) are reviewed. All the observations have been mainly carried out by using the two spectrographs SWS and LWS, adopting their low resolution modes and such data have been used both for lines
openaire +1 more source
Magnetic Activity of Pre-main Sequence Stars [PDF]
Symposium - International Astronomical Union, 2004 I review here recent advances in our understanding of magnetic activity in pre-main sequence (PMS) protostars and T Tauri stars. Results are based on recent imaging, spectroscopic and temporal studies of nearby star forming regions from the Chandra X — ray Observatory and XMM — Newton, including a first look at an ultradeep Chandra exposure of the ...
openaire +1 more source
Magnetic activity in pre-main-sequence stars [PDF]
Monthly Notices of the Royal Astronomical Society, 1987 Certaines etoiles de la pre-sequence principale pourraient contenir des champs magnetiques fossiles dans leurs couches externes, plus forts que tout champ dynamo. Si l'activite de surface est relative au champ magnetique, les etoiles exhiberaient une activite superieure a celle sans champs fossiles significatifs.
openaire +1 more source
Pre-Main-Sequence A-type stars [PDF]
Proceedings of the International Astronomical Union, 2004 Marcella Marconi, Francesco Palla
openaire +1 more source
Luminosity jumps in pre-main-sequence stars
The Astrophysical Journal, 1989 Thermal relaxation in young stars is discussed, showing how luminosity jumps occur in those of sufficient mass. The essential character of the thermal relaxation process is shown to be internal heat transfer accompanied by nonhomologous contraction.
openaire +1 more source
Circumstellar Disks in pre-Main Sequence Stars
, 2003 This review covers the properties of disks around pre-main--sequence stars. It is at this time in the evolution that planets form, and it is important to understand the properties of these disks to understand planet formation. I discuss disk shapes, masses and temperatures, the properties of the host stars, disk lifetimes and dissipation processes ...
openaire +2 more sources
A detailed analysis of the Czernik 38 cluster and its associated tidal tail, utilizing Gaia DR3 and 2MASS. [PDF]
Sci RepAhmed NM.
europepmc +1 more source
Using a neural network approach and starspots dependent models to predict effective temperatures and ages of young stars. [PDF]
PLoS OneTarantino M +4 more
europepmc +1 more source
Subgiants in NGC 188 reveal that rotationally induced mixing creates the main sequence Li-Dip. [PDF]
Nat CommunSun Q +6 more
europepmc +1 more source
Information-Entropy Analysis of Stellar Evolutionary Stages with Application to FS CMa Objects. [PDF]
Entropy (Basel)Zhanabaev Z, Akniyazova A, Ashimov Y.
europepmc +1 more source