Results 21 to 30 of about 39,103 (252)
The Instability Strip for Pre–main-sequence Stars [PDF]
The Astrophysical Journal, 1998 We investigate the pulsational properties of Pre--Main-Sequence (PMS) stars by means of linear and nonlinear calculations. The equilibrium models were taken from models evolved from the protostellar birthline to the ZAMS for masses in the range 1 to 4 solar masses.
Marconi, M., Palla, F.
openaire +2 more sources
Stellar models and isochrones from low-mass to massive stars including pre-main sequence phase with accretion [PDF]
Astronomy & Astrophysics, 2019 Grids of stellar models are useful tools to derive the properties of stellar clusters, in particular young clusters hosting massive stars, and to provide information on the star formation process in various mass ranges.
L. Haemmerlé +8 more
semanticscholar +1 more source
Nonradial Oscillations on a Pre–Main‐Sequence Star [PDF]
The Astrophysical Journal, 2007 We show that the modes observed on the pulsating pre-main-sequence (PMS) star NGC 6383 170 can be interpreted as a combination of radial and nonradial p-modes. Using a dense grid of PMS models and oscillation spectra, we have identified models that match the observed oscillation spectrum within 1 σ of the frequency uncertainties and are consistent with
Zwintz, Konstanze +2 more
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Revisiting the pre-main-sequence evolution of stars [PDF]
Astronomy & Astrophysics, 2017 Aims. We want to investigate how planet formation is imprinted on stellar surface composition using up-to-date stellar evolution models. Methods. We simulate the evolution of pre-main-sequence stars as a function of the efficiency of heat injection ...
M. Kunitomo +3 more
semanticscholar +1 more source
Disks and Halos in Pre-Main-Sequence Stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 11 pages, 10 figures.
Vinković, Dejan +3 more
openaire +4 more sources
The Effect of Pre–Main‐Sequence Stars on Star Cluster Dynamics [PDF]
The Astrophysical Journal, 2006 We investigate the effects of the addition of pre-main sequence evolution to star cluster simulations. We allowed stars to follow pre-main sequence tracks that begin at the deuterium burning birthline and end at the zero age main sequence. We compared our simulations to ones in which the stars began their lives at the zero age main sequence, and also ...
Wiersma, R. +2 more
openaire +4 more sources
An extensive VLT/X-shooter library of photospheric templates of pre-main sequence stars [PDF]
, 2017 Studies of the formation and evolution of young stars and their disks rely on the knowledge of the stellar parameters of the young stars. The derivation of these parameters is commonly based on comparison with photospheric template spectra.
C. Manara +5 more
semanticscholar +1 more source
High-precision Dynamical Masses of Pre-main-sequence Stars with ALMA and Gaia [PDF]
Astrophysical Journal, 2019 The Keplerian rotation in protoplanetary disks can be used to robustly measure stellar masses at very high precision if the source distance is known. We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of spatially and spectrally ...
P. Sheehan +3 more
semanticscholar +1 more source
Photometric Determination of the Mass Accretion Rates of Pre-main-sequence Stars. V. Recent Star Formation in the 30 Dor Nebula [PDF]
, 2017 We report on the properties of the low-mass stars that recently formed in the central of 30 Dor, including the R136 cluster. Using the photometric catalog of De Marchi et al., based on observations with the Hubble Space Telescope, and the most recent ...
G. de Marchi, N. Panagia, G. Beccari
semanticscholar +1 more source
The effect of accretion on the pre-main-sequence evolution of low-mass stars and brown dwarfs [PDF]
, 2017 The pre-main-sequence evolution of low-mass stars and brown dwarfs is studied numerically starting from the formation of a protostellar/proto-brown dwarf seed and taking into account the mass accretion onto the central object during the initial several ...
E. Vorobyov +5 more
semanticscholar +1 more source