Results 91 to 100 of about 14,196,004 (190)
Solar-like Oscillations in Accreting Pre-main-sequence Stars: Insights and Prospects
The Astrophysical JournalWe present theoretical predictions for solar-like oscillators in the pre-main-sequence (pre-MS) phase of stellar evolution. Our pre-MS models start from a stellar seed of 0.01 solar masses that gains mass through accretion, offering an alternative ...
Johannes Jørgensen +4 more
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An Episode of Occultation Events in Gaia21bcv
The Astronomical JournalA previously unremarkable star near the Canis Major OB1/R1 association underwent an episode of multiple deep brightness minima. Light curves based on archival Gaia, Zwicky Transient Facility (ZTF), and NEOWISE data and additional observations from the ...
Klaus W. Hodapp +6 more
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Abundance anomalies in pre-main-sequence stars. Stellar evolution models with mass loss
, 2010 International audienceAims: The effects of atomic diffusion on internal and surface abundances of A and F pre-main-sequence stars with mass loss are studied in order to determine at what age the effects materialize, as well as to further understand the ...
Michaud, Georges +7 more
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The Astrophysical JournalThe James Clerk Maxwell Telescope (JCMT) Transient Survey recently discovered that the Class 0 protostar HOPS 358 decreased in 350 GHz continuum brightness by ∼25% over the course of 4 yr before brightening again for the next 4.
Patrick D. Sheehan +9 more
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Pre-Main-Sequence A-type stars [PDF]
Proceedings of the International Astronomical Union, 2004 Marcella Marconi, Francesco Palla
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JWST Reveals Carbon-rich Chemistry in a Transitional Disk
The Astronomical JournalWe present JWST-MIRI Medium Resolution Spectrometer observations of the Classical T Tauri stars GM Aur and RX J1615.3-3255 (J1615), both hosting transitional disks.
M. Volz +8 more
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Tests of Disk-locking in T Tauri Stars of the Orion Nebula Cluster
The Astrophysical JournalWe look for specific correlations predicted by magnetospheric accretion models for young stars that assume disk-locking using stellar and accretion parameters derived from low-resolution HST-STIS spectra of 33 T Tauri stars in the Orion Nebula Cluster ...
Margaret A. Mueller +3 more
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HIPPARCOS OBSERVATIONS OF PRE-MAIN-SEQUENCE STARS R. Wichmann
We present first results of Hipparcos observations of nearby low-mass pre-main-sequence (PMS) stars (T Tauri and Herbig Ae/Be stars). The data obtained by Hipparcos allow us to derive weighted mean parallaxes for three major nearby star-forming regions ...
Bastian Krautter +3 more
core
Pre-main sequence stars and their substellar companions
The engulfment of planet and brown dwarf companions by their host stars is expected to occur primarily within the first 100 million years of stellar system formation, while the star is still in its pre-main sequence phase. These engulfment events are expected to alter the host star’s photospheric composition in a manner that reflects the composition of
Babatsikos, Mia +3 more
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Entropy Production During Star Formation: An Analytic Thermodynamic Framework from the Main Sequence to Compact Remnants. [PDF]
Entropy (Basel)Martín-Torres J, Zorzano MP.
europepmc +1 more source